R134a Properties Calculator

Freon™ 134a where these properties are critical. Properties of Water and Air is a library with three applications that allow one to obtain the properties of water (density and pressure of vapor) as a function of the temperature and the atmospheric pressure (like a function of the altitude). Calculate the speed of the refrigerant entering and leaving the turbine. There are several other vital properties of a refrigerant which contribute towards the overall system behaviour. It is a branch of physics which is concerned with heat and temperature and their relation to energy and work. Tetrafluoroethane (R-134a) Trifluoroethane (R-143a) Xenon,Xe Acetylene Benzene Carbon Disulphide Ethyl alcohol Ethyl chloride Hydrochloric acid Hydrogen chloride Hydrogen sulphide Methyl alcohol Methyl butane Methyl chloride Nitrous oxide N-octane R-11 R-12 R-114 R-123 Toulene The calculator needs only the Temperature input to calculate the. , and Peskin, A. Saturated line: on line c alculation: on temperature on pressure | references on Mathcad 15 f unctions: R134aPST(T) R134a T S P (p) R134aDSLT(T) R134aDSVT(T) R134aHSLT(T) R134aHSVT(T) R134aSSLT(T) R134aSSVT(T) R134aCpSLT(T) R134aCpSVT(T) R134aCvSLT(T) R134aCvSVT(T). The table is sortable by each of the following refrigerant properties (scroll right or reduce magnification to view more properties): R-134a/227ea (52. Thermodynamics Heat Transfer. properties > calculator with a publicize orange-hued of effervescence, and said: There was a referenced panchayet mainlineed eccentrically. Calculate properties of combustion gases. 300 kJ/kg > h Bf B @ 0. The following thermodynamic properties will be calculated: density, dynamic viscosity, kinematic viscosity, specific enthalpy, specific entropy, specific isobar heat capacity cp, thermic conductivity, coefficient of thermal expansion, heat conductance, thermal diffusivity, Prandtl-number, coefficient of compressibility Z. The pressure/temperature curves for R-1234yf and R-134a are very similar. Structure, properties, spectra, suppliers and links for: 1,1,1,2-Tetrafluoroethane, 811-97-2, 29759-38-4, Norflurane. This command, for example, finds the critical temperature of water. A compressor is to compress saturated R-134a at 14C to 900 kPa, and a power of 4. Engineering processes and design guidelines. This script determines the gas pressure based on temperature of R22 refrigerant. Accurate thermophysical properties are available for several fluids. The pressure of the refrigerant (R134a) entering at a flow rate of 0. TEV were obtained lower than R134a about 16. The following GUI and/or Excel files and MATLAB functions can be used to read data and determine properties from the Thermodynamic Tables. the saturated vapor line and above the critical point. Lavrenchenko, G. Convert between weight and volume using this calculator tool. Help on the main concepts, equations and thermodynamic laws. Mollier diagrams included. 525 East Stop 18 Road Greenwood, IN 46142 317-887-0729 fax: 317-881-1277. Production of chlorofluorocarbons (CFCs) has been phased out. 1 Kenworth R134a Free PDF ebook Download: Kenworth R134a Download or Read Online ebook kenworth r134a capacity in PDF Format From The Best User Guide Database STM STM Dupont. The tables in this section are reprinted, with permission, from NBS/NRC Steam Tables. Freon™ 410A (R-410A) refrigerant offers higher cooling capacity and significantly higher pressure than R-22 for use in systems specifically designed for R-410A. Advanced Cooling Technologies presents the factors that set the operating temperature range for heat pipe fluids, both theoretical and practical. For collection and more info. Use our free amortization calculator to quickly calculate the amortization schedule for your home loan. The logic is not much different that manual table look-up and interpolation — provide two independent properties, e. The MBWR equation of state was used to calculate the tables of thermodynamic properties. Trakref is an out-of-the-box refrigerant management software built to protect owners but designed to support service providers. An SBTL property model of R134a is first validated against a highly accurate Helmholtz energy equation of state (EOS) model. This module introduces how to solve thermodynamics problems in Python using Cantera and Pint. p, r134aPropertyTables. To calculate air psychrometric properties - Enter dry-bulb temperature (T) and any one of others. Alloy steels are designated by AISI four-digit numbers. TEMP, E-S, R134a. (a)Calculate the quality of the refrigerant at evaporator inlet as follows: Since the refrigerant entering into the evaporator as a mixture of vapor and liquid, the enthalpy of the fluid is given by, Obtain the properties of R-134a at a pressure of 60 kPa from table A-12 “Saturated refrigerant 134a: Pressure table” from the textbook. Help on the main concepts, equations and thermodynamic laws. Master's Theses (2009. It is a branch of physics which is concerned with heat and temperature and their relation to energy and work. Thermodynamic Properties of DuPont(tm) Freon(R) 22 Refrigerant Author: DuPont Fluoroproducts Subject: DuPont(tm) Refrigerants, technical information Keywords: dupont,fluoroproducts,freon,freon 22,refrigerant,thermodynamic properties,chlorodifluoromethane,thermodynamic Created Date: 11/16/2004 4:22:40 PM. Paul Evans-Aug 5, 2017 3. properties, can be used as long-term substitutes for R502 (Park and Jung, 2007). Refrigerant properties calculator If this is your first visit, be sure to check out the FAQ by clicking the link above. Refrigerant R134a is a hydrofluorocarbon (HFC) that has zero potential to cause the depletion of the ozone layer and very little greenhouse effect. Properties R-134a ; 1: Boiling Point -14. 9656 grams at standard atmospheric conditions of 60 degrees Fahrenheit and 14. Software applications and libraries (Excel Add-in and ActiveX DLL) for Windows Desktop for calculation of thermodynamic and transport properties ofwater and steam, humid (moist) air, carbon dioxide, R134a, R123, ammonia, methane, nitrogen and oxygen. NH3H2O (ammonia-water) is a mixture. This is a lot more than I paid four years ago. Exclusive access to symbolic and numerical calculators powered by webMathematica ®. Simulate your system with the right refrigerant and export the results to Excel. Calculate the speed of the refrigerant entering and leaving the turbine. Bac Giang’s properties for rent are either. Refrigerant properties calculator If this is your first visit, be sure to check out the FAQ by clicking the link above. Saturated Properties Calculator watch tutorial view guide Calculates saturated liquid and gas properties for a given pressure or temperature using the IAPWS Industrial Formulation 1997. R134 has NBP of about -19 C whereas R134a has a NBP of about -26C. (Eski Üsküdar Yolu) Kolordu Sok. It is widely used in car air-conditioning units as well as industrial chiller units. 51 kJ/kg, s3 =6. 6 m2 and an outlet cross section of 1. SUBJECT: TEMPERATURE - PRESSURE CHART FOR FYI #289 9/17/2009 R-22, R-410A, R-407C, R-134A & R-404A REFRIGERANTS ADVANTAGE Engineering, Inc. 3 of the Heat Exchanger Design Handbook, 1986, by C. Thermophysical Properties of Fluid Systems. It is widely used. Assume the CoolProp root folder to be C:\CoolProp. ResearchGate. Fluid Properties Calculator Instructions. Calculate the heat transfer and work done during this process, in k. Use the ALT + F11 key to see the functions. Load up the file "MATERIALS-redkw. Appendix B: Property Tables for Water Tables B-1 and B-2 present data for saturated liquid and saturated vapor. Enviro-Safe carries a full line of fluids, tools, and supplies including Refrigerant Support, Automotive Fluid, A/C Tools and Industrial Supplies. İçerenköy Mah. This is a lot more than I paid four years ago. Table 1: Refrigerant data comparison Refrigerant R290 R600a R134a R404A R22 R12 Name Propane Isobutane 1,1,1,2-Tetra-flouroethane Mixture R125 R 143a R134a Chloro-. Properties of refrigerant R134a. Look for properties that have the same use (e. It contains a limited number of pure fluids (water, CO2, R134a, nitrogen, oxygen, methane, propane, helium, hydrogen, and dodecane), along with air as a pseudo-pure fluid. R134 has NBP of about -19 C whereas R134a has a NBP of about -26C. The corresponding R134a/R744 and R152a/R744 cycles are shown in Figure 1, where LTC is depicted in a vanished gray color, and HTC for R134a and R152a are depicted in red and green respectively. The Helmholtz energy of the mixture is the sum of the ideal gas contribution, the compressibility (or real fluid) contribution, and the contribution from mixing. 1 C and -24. 74 kJ/kg 26 C 100 kPa 60. The results confirmed that HCR134a. Quick and reliable calculations for steam tables of water, refrigerants and other substances. This is a property of thermal mass which describes the way in which the density, heat capacity and thermal conductivity of a wall for example, can slow the passage of heat from one side to the other (decrement delay), and also attenuate gains as they pass through (decrement factor). The following thermodynamic properties will be calculated: density, dynamic viscosity, kinematic viscosity, specific enthalpy, specific entropy, specific isobar heat capacity cp, thermic conductivity, coefficient of thermal expansion, heat conductance, thermal diffusivity, Prandtl-number, coefficient of compressibility Z. (Problem 4. An SBTL property model of R134a is first validated against a highly accurate Helmholtz energy equation of state (EOS) model. Property Calculator and found it much easier to use. For pure refrigerants, the virial, cubic, Martin-Hou, Benedict-Webb-Rubin, and Helmholtz nist-equations of state and the extended corresponding states model are discussed. To get a more accurate. Use the ALT + F11 key to see the functions. These data include the following:. Learn the formula for calculating the specific heat of foods. 51 kJ/kg, s3 =6. An Analysis of Inter-annual Variability and Uncertainty of Continental Surface Heat Fluxes. Engineering formulas complete with corresponding online calculators. Where: v = Specific volume u = Specific internal energy h = Specific enthalpy s = Specific entropy. In this paper, the energy storage properties of four refrigerants, R1234yf, R1234ze, R134a and R32, with M-metal organic framework (MOF)-74 (M = Zn, Ni, Mg, Co) nanoparticles are investigated using molecular dynamics simulations and grand canonical Monte Carlo simulations. r134a pressure temperature chart ambient. Failure to stay in this unit system will produce undesirable results (i. This is a hydrofluorocarbon (HFC) and haloalkane refrigerant commonly known as norflurane or Freon 134A. Never, if you are retrofitting, charge the same or specified amount of R12 with R134a. Federal Register 2. NOTE: For best heat transfer, condenser temperatures should be 30-40 degrees hotter than the ambient air temperature entering the condenser. What is Section 608? Section 608 of the Clean Air Act prohibits the knowing release of refrigerant during the maintenance, service, repair, or disposal of air-conditioning (AC) and refrigeration equipment. 06% and the use of electric current is higher than R134a about 12. These data include the following:. 34 °F) at atmospheric pressure. Want to get an idea how much your monthly payments will be? Estimate your mortgage with our easy-to-use mortgage calculator. Thermodynamics - Thermodynamics - Thermodynamic properties and relations: In order to carry through a program of finding the changes in the various thermodynamic functions that accompany reactions—such as entropy, enthalpy, and free energy—it is often useful to know these quantities separately for each of the materials entering into the reaction. In a typical air conditioner, utilizing R134a with PAG oil, a single phase. p, r134aPropertyTables. Properties of the chart includes, bounded by two perpendicular axes, and a curved line these are, dry bulb temperature line on one axis,. Genetron Properties 1. R134a is a powerful, gaseous refrigerant that your vehicle uses to keep the cabin interior cool all year round. R134a is an extremely common refrigerant used in a wide range of refrigeration and air conditioning applications, including medium and high temperature refrigeration (both domestic and commercial), residential & light air conditioning, automotive air conditioning and industrial applications such as centrifugal chillers. crosser, Thermal conductivity of heterogeneous two- component systems, Ind. R134a Pressure Gauge Chart This chart details how ambient temperature correlates with the system refrigerant charge pressure, and how it affects high and low side psi readings. Then the new model was tested rigorously from single function calls, to heat exchanger test bench, to system models of the vapor compression cycle in Modelon's Air Conditioning Library. Data from the Saturation Temperature Table of the R-134a Tables at -50oC: Vsat liq 3 0. This command, for example, finds the critical temperature of water. Thermodynamic properties have been calculated by means of the software application REFPROPv9. Our goal is to improve the safety, efficiency, and productivity of industrial refrigeration systems and technologies. Input variables that can be used are: 1 Pressure. Properties of Carbon Dioxide at atmospheric pressure. 001-3 MPa split over 60 columns:. R134a R134a. Many refrigeration, fire protection and air conditioning and heat pump systems contain hydrofluorocarbons (HFCs). Compare performance of multiple refrigerants, learn the line sizing, and much more – all for free. Enthalpy (kJ/kg) Figure 1. Thermophysical Properties of Fluid Systems. Table A–20 Ideal-gas properties of carbon dioxide, CO 2 Tetrafluoroethane (R-134a) CF 3CH 2F 102. The heart of any commercial process flow simulation software is an equation of state. Anonymous said On 1 a at 30C, 200Kpa is more preasure than the saturation preasure I think that means in is a compressed liquid. From Table A-13, v actual = 0. More than 200K calculations per year. A compressor is to compress saturated R-134a at 14C to 900 kPa, and a power of 4. A system circulating R134a needs a drier, because of the propensity of the refrigerant to absorb water. The ease with which a parametric study can be performed without any programming is one of the many features of the H2FC-CF3 (Refrigerant R134a) property calculator. They also concluded that the exergetic efficiency decreases with decrease in evaporator temperature. 096000000000004 This is the 100-year Global Warming Potential for the refrigerant R134a. Calculation of thermodynamic state variables of tetrafluorethane - R134a. They are source code for the computation of saturated proper- numerical iteration, linear interpolation, integration, Figure 8 Source code on the generation of saturated properties of R134a for a given temperature range. 6 Sulfur hexafluoridem fSF 6 0. Tetrafluoroethane is a clear liquid which boils at room temperature and can be extracted from common canned air canisters by simply inverting them during use. R134a has zero Ozone layer depleting properties and hence became popular as an ideal replacement for dichlorodifluoromethane (R-12), which was known to have an adverse impact on the Ozone layer. Affordability Calculator User Guide Of retirement - only enter the post retirement • Rental income - may only be utilised where our self-employed criteria can be met. Fundamen, 1962, 1 (3), pp 187-191. Given two numbers, a (the dividend) and n (the divisor), a modulo n (abbreviated as a mod n) is the remainder from the division of a by n. Psychrometric chart is defined as the representation of air properties, in graphical form. Determine the final temperature of the R-134a and the final specific internal energy. Properties of refrigerant R134a. p h diagram r134a Diagram 3 Contaminated R134a Refrigerant Gas. R134a and R290 are used other than CFC12. Calculate() [source] ¶ OutputList() [source] ¶ Return a list of parameters for this component for further output. This leads to a different design of details in many cases. İçerenköy Mah. if you are trying to find the density of water at a provided temperature and pressure, make sure the provided units and EES units coincide). Product Identifier Product Name: REFRIGERANT R134a Synonyms: 1,1,1,2 Tetrafluoroethane HFC-134a Norflurane EC Number: 212-337-0 CAS Number: 811-97-2. The use of R134A prevented damage to the ozone layer. R134a and R12 Compressors Pressure-Enthalpy Diagram of R12 and. Respirator Selection Recommendations. Sketch P-v, T-v, and P-T plots for steam, R-134a, and ideal gases. Refrigerants can cause freezing if they spray on your skin. Saturated R-134a Thermodynamic Properties Table. Kanaev The Odessa Institute of Low-Temperature Engineering and Energetics, Petra Velikogo Street l/3, 270057, Odessa, CIS Received 24 July 1990; revised 2 June 1992 Experimental results of measurements of the thermodynamic and transport properties of refrigerant R134a are presented. Calculate properties of various refrigerants; New refrigerants added R466A, R515B, R452B, R454B,R513A; Easily generate P-T tables for various refrigerants including. R123 Vs R134a. We give you powerful software tools to manage refrigerant leaks and extend HVAC/R equipment life, reducing maintenance and material costs in the process. And yes you only need pressure and temperature. While the COP of R134a (COP R134a) is given by the right ordinate, the absolute COPs for the other refrigerants can be calculated by adding COP abs from the left ordinate to COP R134a. One kilogram of R-134a fills a 0. Currently I am facing problem in determining the thermodynamic properties for R134a and I am very appreciate for your help and advice. From Table A-12: V = 2 kg *0. Mixture models explicit in Helmholtz energy have been developed to calculate the thermodynamic properties of refrigerant mixtures containing R-32, R-125, R-134a, R143a, and R-152a. Assume the CoolProp root folder to be C:\CoolProp. Battery or storage calculator. The thermodynamic properties of the mixture of 1,1,1,2‐tetrafluoroethane (R134a) and triethylene glycol dimethyl ether (TriEGDME) have been modeled with equations of state in an extended correspondin. 1 suite provides results in tabulated form (exportable to Excel) and in diagrams you are used to (Pressure-Enthalpy, Temperature-Entropy). Ruvinskij, S. Thermodynamics is the study of heat and work. 6 m2 and an outlet cross section of 1. The alternative refrigerants that are studied for its replacement include R32, a mixture of R32/R125 with 90%/10% molar concentration, R600a, R290, R1234yf, R1234ze and R134a. if you are trying to find the density of water at a provided temperature and pressure, make sure the provided units and EES units coincide). P3 =4 MPa, T3 =400 C ⇒ h3 =3213. R134a Charge Port. Thermodynamic Properties of R134a TetraFlouroEthane - CF3CH2F. NH3 T = 200 F, v = 11 ft3/lbm View Answer Give the phase and the missing properties of P, T, v and x. Compare performance of multiple refrigerants, learn the line sizing, and much more – all for free. R-134a is the most common refrigerant found in automobiles today. NH3H2O (ammonia-water) is a mixture. The initial pressure is P 1 = 400 kPa absolute. Tetrafluoroethane is a clear liquid which boils at room temperature and can be extracted from common canned air canisters by simply inverting them during use. This gives curve fits for thermal and transport properties of R-134a, which is the major refrigerant used in residential and automotive air-conditioning. As a refrigerant, it possesses completely stable thermal characteristics, has low toxicity, and is non-corrosive and non-combustible. 63 10 R134a Properties Calculator Refrigerant Gas R134a Version 2 Revision Date: 20. Compare the cap rate for a candidate property with the cap rates for comparable properties to determine its value. The Section Properties Calculator calculation interface appears, allowing you to define the properties for your section. * Molecular size of R134a is smaller than R12 so it will leak through the hoses and flare fitting that R12 system has. The R134a Tables Excel Add-In library calculates 23 thermodynamic properties of R134a (1,1,1,2-Tetrafluoroethane). The refrigerant is expanded in an isobaric process until the temperature reaches 303K. These data include the following:. Performance comparison of R1234yf and R134a May 25, 2017 In a recent study “A comparative study on the performance of HFO-1234yf and HFC-134a as an alternative in automotive air conditioning systems”, S. 944-3D is used in the modeling of thermodynamic cycle of VCRC and. properties,andmechanicalproperties. It can be used for recharging refrigerant, or to diagnose an a/c system based on pressure readings from your gauges. Calculation of thermodynamic state variables of tetrafluorethane - R134a. Daviran et al, have simulated an automotive air conditioning system and compared the performance of HFC-134a and HFO-1234yf as drop-in. The Helmholtz energy of the mixture is the sum of the ideal gas contribution, the compressibility (or real fluid) contribution, and the contribution from mixing. 0221367 X e^23 molecules of gas weighs 28. Properties of refrigerant R134a. Calculate thermodynamic properties of different industrial important materials based on the CoolProp thermophysical properties database for pure and pseudo-pure fluids. 2) The temperature at compressor exit. R407C is suitable for residential & light air conditioning and direct expansion air conditioning systems. 3 out of 5 stars 586 CDN$ 16. Kanaev The Odessa Institute of Low-Temperature Engineering and Energetics, Petra Velikogo Street l/3, 270057, Odessa, CIS Received 24 July 1990; revised 2 June 1992 Experimental results of measurements of the thermodynamic and transport properties of refrigerant R134a are presented. A International Standard Formulation for the Thermodynamic Properties of 1,1,1,2-Tetrafluoroethane (HFC-134a) for Temperatures from 170 K to 455 K and Pressures up to 70 MPa. NH3H2O (ammonia-water) is a mixture. Calculate the work done by a piston contained within a cylinder with air if 2 m 3 is tripled while the temperature is maintained at a constant T = 30 o C. R-134a Thermodynamic Properties Table. Calculate the cycle thermal efficiency and the moisture content of the stea m leaving the low-pressure turbine. If you need to recharge a system due to low refrigerant charge, it is illegal to vent the old refrigerant into the air. Back to Spreadsheets Main Page. Sketch P-v, T-v, and P-T plots for steam, R-134a, and ideal gases. Compare performance of multiple refrigerants, learn the line sizing, and much more – all for free. R134a has a lower thermal conductivity than R22, so an R134a system needs a larger heat exchanger. Browse our table of the most common compatible heat pipe systems, as well as operating temperature ranges on our site today. Many refrigeration, fire protection and air conditioning and heat pump systems contain hydrofluorocarbons (HFCs). Refrigerant Gas R134a Version 2 Revision Date: 20. WARNING: DO NOT vent to the atmosphere. It allows 11 different combinations of input variables to be used for calculations. In this paper, the energy storage properties of four refrigerants, R1234yf, R1234ze, R134a and R32, with M-metal organic framework (MOF)-74 (M = Zn, Ni, Mg, Co) nanoparticles are investigated using molecular dynamics simulations and grand canonical Monte Carlo simulations. 0, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2010) Saturation Pressure-Temperature Data for R-134a (psig)* *Red Italics Indicate Inches of Mercury Below Atmospheric Pressure. It also shows how to calculate the test pressures in accordance with EN378. Multi-Family, Office or Industrial) and and class. R134a Pressure Temperature Chart R134a Temperature (°C) Pressure (barA) Pressure (barg) Pressure (psig)-70 0. If you are analyzing a thermodynamic process or even a complete cycle, you can save the data returned by the property calculator and add it as another data series to the existing plot. Iljushenko and V. properties,andmechanicalproperties. Therefore,. 15 Viscosity of R134a-POE32 mixture for varying quality. , NIST Standard Reference. İçerenköy Mah. Look for properties that have the same use (e. R134a Refrigerant Pressure Temperature Calculator This calculator requires the use of Javascript enabled and capable browsers. This is a property of thermal mass which describes the way in which the density, heat capacity and thermal conductivity of a wall for example, can slow the passage of heat from one side to the other (decrement delay), and also attenuate gains as they pass through (decrement factor). , in criteria. 000776027 Pa. txt) or read online for free. For instance, the expression “7 mod 5” would evaluate to 2 because 7 divided by 5 leaves a. Where: v = Specific volume u = Specific internal energy h = Specific enthalpy s = Specific entropy. NOTE: For best heat transfer, condenser temperatures should be 30-40 degrees hotter than the ambient air temperature entering the condenser. Technical bulletin. (Eski Üsküdar Yolu) Kolordu Sok. Saturated Properties Calculator watch tutorial view guide Calculates saturated liquid and gas properties for a given pressure or temperature using the IAPWS Industrial Formulation 1997. R-134a Thermodynamic Properties Tables for Temperatures -70 °C to 101. 12 Page 1 of 9 SAFETY DATA SHEET REFRIGERANT R134A SECTION 1: IDENTIFICATION OF THE SUBSTANCE / PREPARATION AND OF THE COMPANY / UNDERTAKING 1. R-134a cylinders are colored light blue. 74 kJ/kg 26 C 100 kPa 60. Equal efficiency as compared to R-134a. Aflas: Aflas is the tradename for a unique fluoroelastomer based upon an alternating copolymer of tetrafluoroethylene and propylene ("TFE/P"). Select fluid from options box Enter temperature value and choose units Enter number of significant digits for output Browser will re-calculate when a change is made and the mouse is clicked in another box, the Tab key is pushed (Enter key for UNIX), or the Calculate button is clicked. Genetron Properties 1. Freon™ 134a where these properties are critical. To comply with provisions of the U. Five mixture models have been developed for calculating thermodynamic properties of refrigerant mixtures containing R-32, R-125m and R-134a. Its chemical formula is CF3CH2F. What is Section 608? Section 608 of the Clean Air Act prohibits the knowing release of refrigerant during the maintenance, service, repair, or disposal of air-conditioning (AC) and refrigeration equipment. R-134a was found to not be miscible with mineral oil and new oils had to be developed. Search, browse and learn about the Federal Register. R-134a has the formula CH2FCF3. Calculate online thermodynamic and transport properties of water and steam, based on industrial (IAPWS-IF97) or scientific (IAPWS-95) formulation. Nowadays, the phase out of CFCs is almost done all over the world. The refrigerant R134A is called tetrafluoroethane and is classified as one of the HFC gases from the other refrigerant variants. The refrigerant R134a is the chemical compound tetrafluoroethane. (Problem 4. In 16th International Refrigeration and Air Conditioning Conference at Purdue, July 11-14, 2016. Thermal energy storage can be carried out by working fluid adsorbing and desorbing in porous materials. Fundamen, 1962, 1 (3), pp 187-191. Table A–20 Ideal-gas properties of carbon dioxide, CO 2 Tetrafluoroethane (R-134a) CF 3CH 2F 102. Freon Calculator. R134a R134a. They also concluded that the exergetic efficiency decreases with decrease in evaporator temperature. 1°C : 2: Auto-Ignition Temperature : 1418°F or 770°C: 3 : Ozone Depletion Level : 0 : 4: Solubility In Water : 0. Tetrafluoroethane is a clear liquid which boils at room temperature and can be extracted from common canned air canisters by simply inverting them during use. Vs = x Vg + (1 - x) Vf. The different physical properties of R22, R404A and R134a require more or less heat surface area to achieve the same performance. The R134a Tables Excel Add-In library calculates 23 thermodynamic properties of R134a (1,1,1,2-Tetrafluoroethane). 3 ft3/lbm c. The inlet pressure is 15 bar and the subcooling is 15 K. This gives curve fits for thermal and transport properties of R-134a, which is the major refrigerant used in residential and automotive air-conditioning. Quick and reliable calculations for steam tables of water, refrigerants and other substances. properties is required. NH3 T = 120 F, v = 0. Attached are the Excel VBA fluid property. How to calculate enthalpy values: These values are available for the different commercially available refrigerants. The inlet pressure is 15 bar and the subcooling is 15 K. r134a refrigerant properties pdf FluidLABLibR134aDocuEng. Lower limit for calculation: -70 C, 1 bar upper limit: 180 C, 300 bar. As a refrigerant, it possesses completely stable thermal characteristics, has low toxicity, and is non-corrosive and non-combustible. Ruvinskij, S. Our goal is to improve the safety, efficiency, and productivity of industrial refrigeration systems and technologies. 7 kg / s and a temperature of 80 ° C decreases isentropically up to 140 kPa at the level of 1000 kPa in a continuous flow turbine with an inlet cross section of 0. R-134a is subject to U. Refrigerant R134a is a hydrofluorocarbon (HFC) that has zero potential to cause the depletion of the ozone layer and very little greenhouse effect. Mollier diagrams included. Refrigerant RGP tables in CFX-5 are also available if you purchase a copy of REFPROP from NIST. Some properties that appear for sale on this website may subsequently have sold or may otherwise no longer be available. Production of chlorofluorocarbons (CFCs) has been phased out. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators. 059 MPa, Critical Temperature 101. “The thermodynamic properties of R-134a are such that about six volumes of refrigerant are required to produce the same refrigeration capacity as a single volume of ammonia, which means a larger compressor is needed for R-134a. A International Standard Formulation for the Thermodynamic Properties of 1,1,1,2-Tetrafluoroethane (HFC-134a) for Temperatures from 170 K to 455 K and Pressures up to 70 MPa. The container is then heated until the pressure of the R-134a is 200 kPa. To enhance the performance, the use of refrigerant mixture is also a possibility. Yo can calculate the density using the void fraction (VF) which is the relation between the volume occupied by the vapour phase and the total volume (liquid+vapour), of course this is not a. the accuracy of the predicted critical properties could be im-proved substantially by adjusting the value of the interaction parameter in the mixing rule for the a term. One pound-mass of water fills a 2. R404A Properties and Applications A-Gas (Australia) Pty Ltd 9-11 Oxford Road Laverton North, VIC 3026 Australia T 1800 002 427 F [+61] (0) 3 9368 9233 info. Specify a specific internal energy range of 80-500 kJ/kg split over 25 rows and a pressure range of 0. Thermal energy storage can be carried out by working fluid adsorbing and desorbing in porous materials. As Figure 6. Equal efficiency as compared to R-134a. Fluid properties tables are available as well as dimensions of standard pipes. 0 Toluene C 7H. 12 Page 1 of 9 SAFETY DATA SHEET REFRIGERANT R134A SECTION 1: IDENTIFICATION OF THE SUBSTANCE / PREPARATION AND OF THE COMPANY / UNDERTAKING 1. In this figure, we start off with a state point given by T,P and then we calculate each of the other possible output pairs in turn, and then try to re-calculate T,P from the new input pair. An R-22 Replacement for New ACs and Heat Pumps. You can also add, subtraction, multiply, and divide and complete any arithmetic you need. Please determine: 1) The compressor isentropic efficiency. 08 R407C R32 R125 0. 15 Viscosity of R134a-POE32 mixture for varying quality. The Industrial Refrigeration Consortium is a collaborative effort between the University of Wisconsin Madison and industry. I will be using this UAB calculator in all my classes that need water or refrigerant properties for Excel. 5 * critical density or in the vicinity of the critical point may be inaccurate with the Martin-Hou equation of state. Thermodynamic Properties of Saturated R-410a Tables for Temperatures -°60 to °71. [24] and Calm and Hourahan, [25] and Jung, [26]. Specific enthalpy is used in thermodynamic equations when one wants to know the energy for a given single unit mass of a substance. Hamilton and O. What Supermarkets and Property and Facility Managers Need to Know. Free Online Interactive Psychrometric Chart. Some of these features are highlighted in the slide show (link at the top margin) and some are left for the users to explore. There is not enough data to determine whether the following common O-Ring materials are suitable for using in the environment containing FREON R134A or not. R134a Pressure Gauge Chart This chart details how ambient temperature correlates with the system refrigerant charge pressure, and how it affects high and low side psi readings. R134a and R290 are used other than CFC12. 9656 grams at standard atmospheric conditions of 60 degrees Fahrenheit and 14. 51 shows SSP calculations to reach an evaporation temperature of 2°C (corresponding to LWT - TEVAP = 5). And dont use capital 'A' in R134a …. 2016-12-01. The properties of R600a and R290 differ from other refrigerants commonly used in small her-metic systems, as shown in Table 1. This is just for R12 or R134a. Locate data states on P-v, T-v, and P-T plots for steam, R-134a, and ideal gases. Thermodynamic properties have been calculated by means of the software application REFPROPv9. Kanaev The Odessa Institute of Low-Temperature Engineering and Energetics, Petra Velikogo Street l/3, 270057, Odessa, CIS Received 24 July 1990; revised 2 June 1992 Experimental results of measurements of the thermodynamic and transport properties of refrigerant R134a are presented. Refrigerant R134a is a hydrofluorocarbon (HFC) that has zero potential to cause the depletion of the ozone layer and very little greenhouse effect. Refrigerant R134a or HFC-134a is a commercially available hydrofluorocarbon (HFC) refrigerant for use as a long-term replacement for R-12 in new equipment and for retrofitting medium temperature CFC-12 systems. R-134a was found to not be miscible with mineral oil and new oils had to be developed. Get the properties of R-134a from CoolProp and save them as tables in a structure named r134aTables. Some properties that appear for sale on this website may subsequently have sold or may otherwise no longer be available. The Helmholtz energy of the mixture is the sum of the ideal gas contribution, the compressibility (or real fluid) contribution, and the contribution from mixing. Help : Call R134a Properties Hi, Ive been trying to built a compressor model using R134a as refrigerant but I cannot not calculate the density of the refrigerant when using Modelica. Help on the main concepts, equations and thermodynamic laws. It can be used for recharging refrigerant, or to diagnose an a/c system based on pressure readings from your gauges. or metric units. Table A-10E Properties of Saturated Refrigerant 134a (Liquid–Vapor): Temperature Table 957 Table A-11E Properties of Saturated Refrigerant 134a (Liquid–Vapor): Pressure Table 958 Table A-12E Properties of Superheated Refrigerant 134a Vapor 959. 00 purchase option at the end of lease term and requires first and last payment in advance and a one-. A full implementation of the IF-97 standard that provides very accurate steam and water properties in ranges from 0-1000 bar and 0-2000°C for use in process Engineering Industry. Accurate thermophysical properties are available for several fluids. How to Calculate Molar Mass. In a typical air conditioner, utilizing R134a with PAG oil, a single phase. It was chosen as the preferred equation of state because it provided the most accurate fit of the thermo-. 6 m2 and an outlet cross section of 1. pdf), Text File (. In this paper, a new refrigerator test system was built up according to the National Standard of India. Here "a" is used to denote that it is an isomer. R-134a P = 50 psia, v = 1. Today, R134A is commonly used in vehicle air conditioning systems, but it can also be used in refrigerators, freezers and other refrigeration equipment similar to R12. The Section Properties Calculator calculation interface appears, allowing you to define the properties for your section. Calculate the work done by a piston contained within a cylinder with air if 2 m 3 is tripled while the temperature is maintained at a constant T = 30 o C. They are summarised in the table shown in Fig 2. More information on E - pH diagrams, calculation methods, and applications can be found in different handbooks, for example, from the Pourbaix Atlas1. R134a Like GWP Level 400-675 < 1500 ~600 ~300 HFO 1234yf HFO 1234ze ARM-42 R410A R22 R407A R407C R407F, R452A = XP44 ARM-35 0 500 1,000 1,500 2,000 Pressure or R32/HFC/HFO Blends R32/HFO Blends HFC/HFO Blends R134a CO 2 R404A R507A DR2, N12, ARC 1 R290 NH 3 A1 – Non-Flammable A3 A2L – B2L Mildly Flammable –Flammable R123-Like (V. Then you can compute vapor pressures and other quantities from a reference-quality equation of state. The molar mass is the mass of one mole of a sample. Property Value; Molecular Weight: 102: Boiling Point at 1am (101. 1231 m3 rigid container at an initial temperature of - 40 oC. This module introduces how to solve thermodynamics problems in Python using Cantera and Pint. Cap rates can be used to calculate the value of commercial and other income producing properties. R134A temperature/pressure relationship: see the table above; R134A alternative name: 1,1,1,2-Tetrafluroethane or CH 2 FCF 3. Use the ALT + F11 key to see the functions. for saturation properties because they are much easier. Saturated R-134a. A domestic R134a refrigerator was selected. most applications, P,T, into the independent variables of the viscosity equation, ρ,T. properties is required. Mixture models explicit in Helmholtz energy have been developed to calculate the thermodynamic properties of refrigerant mixtures containing R-32, R-125, R-134a, R143a, and R-152a. crosser, Thermal conductivity of heterogeneous two- component systems, Ind. 34 °F) at atmospheric pressure. 096000000000004 This is the 100-year Global Warming Potential for the refrigerant R134a. The form below provides you with blanks to enter the individual enthalpies or free energy d ata points for a given reaction. Area Moment of Inertia Section Properties Half Tube Calculator _ Engineers Edge _ Www. No:10/1 D:5 34758 Ataşehir, İstanbul. Refrigerant R134a is a hydrofluorocarbon (HFC) that has zero potential to cause the depletion of the ozone layer and very little greenhouse effect. It is called the isentropic efficiency of the compressor. Saturated line: on line c alculation: on temperature on pressure | references on Mathcad 15 f unctions: R134aPST(T) R134a T S P (p) R134aDSLT(T) R134aDSVT(T) R134aHSLT(T) R134aHSVT(T) R134aSSLT(T) R134aSSVT(T) R134aCpSLT(T) R134aCpSVT(T) R134aCvSLT(T) R134aCvSVT(T). Support IP and SI units. The section at the end on test pressures shows how to calculate the pressures that. Companies that operate or. Properties for R134a are as follows. BSM Freightliner Install Kit. The vapor pressure of a liquid is the point at which equilibrium pressure is reached, in a closed container, between molecules leaving the liquid and going into the gaseous phase and molecules leaving the gaseous phase and entering the liquid. - Instant calculation of 16 different thermodynamic properties - Working fluids: water, R134a, ammonia, R12 (freon-12), CO2 and SF6 - Share results with other applications and save as text - Offline working - Ad-free working (Pro Feature) - Options to work with both International-SI(metric) and British/American-US systems of units. Some of these features are highlighted in the slide show (link at the top margin) and some are left for the users to explore. 11% by weight at 77°F or 25°C : 5 : Critical Temperature : 252°F or 122°C : 6: Cylinder Color Code : Light Blue : 7: Global Warming Potential (GWP) 1200. R134a has been able to replace R12 successfully in number. 2- Determine the original mass of R-134a in the tank 3- Determine the phase(s) of the refrigerant at the end of the recharging process 4- Calculate the final mass of the R-134a in the tank Problem 3 Ethane at 10 MPa and 100 C is heated at constant pressure until its volume has increased by 60%. The properties of R12, R134a and R152a are shown in Table 1, where the normal boiling point (boiling temperature at pressure of 1 atmosphere) of R12, R134a and R152 are almost similar, i. 1231 m3 rigid container at an initial temperature of - 40 oC. Calculation of thermodynamic state variables of tetrafluorethane - R134a. 059 MPa, Critical Temperature 101. Thermodynamics Heat Transfer. The table is sortable by each of the following refrigerant properties (scroll right or reduce magnification to view more properties): R-134a/227ea (52. or metric units. #hayalinikeşfet. The cylinder is included in the price. 648 ft3 piston-cylinder device that is arranged. For the same evaporation. What is Section 608? Section 608 of the Clean Air Act prohibits the knowing release of refrigerant during the maintenance, service, repair, or disposal of air-conditioning (AC) and refrigeration equipment. Saturated R-134a Thermodynamic Properties Table. R134a has been able to replace R12 successfully in number. NH3 T = 120 F, v = 0. Viscosity of refrigerants and other working fluids from residual entropy scaling. Step 2) Calculate deltaHb from the saturated vapor table (use the table that's ordered by pressure). R-134a Properties - Imperial Units. 03 and R = 0. Conservation of mass applied to a system. NASA Astrophysics Data System (ADS) Huang, S. Many refrigeration, fire protection and air conditioning and heat pump systems contain hydrofluorocarbons (HFCs). Use this calculator to convert mass flow rate and density of a substance to the rate of volumetric flow. 547 x c + 0. The inter-annual variability and the corresponding uncertainty of land surface heat fluxes during the first decade of the 21st century are re-evaluated at continental scale based on the heat fluxes estimated by the maximum. Thermophysical Properties of Fluid Systems. It has been in use since the early 1990’s and now, in 2019, we are beginning to see it’s popularity wane with the rise of the new HFO refrigerant known as R-1234yf. Dew point, entalpy, humidity ration, specific volume. Calculate properties of combustion gases. BSM Freightliner Install Kit. Technical bulletin. The different physical properties of R22, R404A and R134a require more or less heat surface area to achieve the same performance. Table 1: Refrigerant data comparison Refrigerant R290 R600a R134a R404A R22 R12 Name Propane Isobutane 1,1,1,2-Tetra-flouroethane Mixture R125 R 143a R134a Chloro-. - TROUBLESHOOTING GUIDE Vintage Air- Thermodynamic Properties of R134a 1112tetrafluoroethane- Saturation Table R 134a Despre noi- superheat subcooling charging chart HVAC Home- R134a Refrigerant Pressure Temperature Calculator- Comparison Study of Isceon 49 A Dropin Replacement for- Troubleshooting HVACR systems using refrigerant superheat. This is a property of thermal mass which describes the way in which the density, heat capacity and thermal conductivity of a wall for example, can slow the passage of heat from one side to the other (decrement delay), and also attenuate gains as they pass through (decrement factor). Comprehensive scientific unit conversion. Calculate properties of various refrigerants; New refrigerants added R466A, R515B, R452B, R454B,R513A; Easily generate P-T tables for various refrigerants including. 11% by weight at 77°F or 25°C : 5 : Critical Temperature : 252°F or 122°C : 6: Cylinder Color Code : Light Blue : 7: Global Warming Potential (GWP) 1200. An equation of state for the thermodynamic properties of 1,1,1 Including a New Correlation for the Viscosity of R134a and then try to re-calculate T,P from. 2005/11/25. bas file for refrigerant R-134a. What is the a fair price for R-22 these days?. Today, R134A is commonly used in vehicle air conditioning systems, but it can also be used in refrigerators, freezers and other refrigeration equipment similar to R12. NH3 T = 200 F, v = 11 ft3/lbm View Answer Give the phase and the missing properties of P, T, v and x. Calculate properties of combustion gases. It contains a limited number of pure fluids (water, CO2, R134a, nitrogen, oxygen, methane, propane, helium, hydrogen, and dodecane), along with air as a pseudo-pure fluid. CALL EES_REFPROP('R32+R134a',TV,300 [K],13. It is a zeotropic blend of difluoromethane (R-32), pentafluoroethane (R-125), and 1,1,1,2-tetrafluoroethane (R-134a). Fundamen, 1962, 1 (3), pp 187-191. Update(**kwargs) [source] ¶. 525 East Stop 18 Road Greenwood, IN 46142 317-887-0729 fax: 317-881-1277. a) What is the mass of refrigerant in the system? b) What is the total volume of the system after expansion?. Iljushenko and V. Equal efficiency as compared to R-134a. Maximum increase in exergy loss using R134a is 4. They also concluded that the exergetic efficiency decreases with decrease in evaporator temperature. Properties-REFPROP, Version 9. Created Global functons which ask for a Substance in a string for either "H2O", "R134a", or "R22" and returns the correct function for each substance Need to rewrite descriptions for Global functions to address Substance String while remaining under 252 charaters. Comprehensive scientific unit conversion. A full implementation of the IF-97 standard that provides very accurate steam and water properties in ranges from 0-1000 bar and 0-2000°C for use in process Engineering Industry. Attached are the Excel VBA fluid property. Fluid properties: ρ=995. A convenient, precise and customizable psychrometric chart & calculator tool for HVAC engineers. 35 psia For R134a Saturation pressure at 120 °F is 186. R134a has been able to replace R12 successfully in number. * Molecular size of R134a is smaller than R12 so it will leak through the hoses and flare fitting that R12 system has. R134a has a lower thermal conductivity than R22, so an R134a system needs a larger heat exchanger. Use our free amortization calculator to quickly calculate the amortization schedule for your home loan. com is a free application providing phase equilibrium data, phase diagrams, and model calculations on different kinds of distillation. Therefore,. Replaces R-12 in vehicles air conditioning systems world wide. The following GUI and/or Excel files and MATLAB functions can be used to read data and determine properties from the Thermodynamic Tables. Thermodynamic Properties of Saturated R-410a Tables for Temperatures -°60 to °71. No ODP, however R134a has a high. Calculate() [source] ¶ OutputList() [source] ¶ Return a list of parameters for this component for further output. SCOPE This project has involved selected measurements of the thermodynamic properties of HFC-143a and HFC-152a and the development of high-accuracy. Properties of refrigerant R134a. 013bar at boiling point: 682kg/m3 (ammonia liquid), 1413kg/m3 (liquid R22) and 1376kg/ m3(liquid R134a). 24 Heat transfer coefficient h=808. What this number means is that one mole or one molecular measure of air that contains 6. Even there was a. Trakref is an out-of-the-box refrigerant management software built to protect owners but designed to support service providers. (Ideal dh2/dh2). properties of HFC-134a to those of CFC-12, an intensive support from the refrigerant and air-conditioning industry has given to the refrigerant HFC-134a as a potential replacement for CFC-12. One kilogram of R-134a fills a 0. The refrigerant R134a is the chemical compound tetrafluoroethane. Then the new model was tested rigorously from single function calls, to heat exchanger test bench, to system models of the vapor compression cycle in Modelon’s Air Conditioning Library. Refrigerants - Physical Properties - Physical properties of refrigerants - molecular weight, boiling, freezing and critical points Refrigerants - Temperature and Pressure Charts - Temperature and pressure chart for refrigerants R22, R410A, R12, R134A, R401A, R409A, R502, R404A, R507A, R408A and R402A. 88 gram per (cubic centimeter) or 0. Simulate your system with the right refrigerant and export the results to Excel. Customize your workflow, collaborate, and achieve ambitious outcomes. The container is then heated until the pressure of the R-134a is 200 kPa. Flammability/Safety. (Eski Üsküdar Yolu) Kolordu Sok. R134a and R290 are used other than CFC12. Thermodynamics Calculator. 39 °C in the condenser. The thermodynamic properties of the mixture of 1,1,1,2‐tetrafluoroethane (R134a) and triethylene glycol dimethyl ether (TriEGDME) have been modeled with equations of state in an extended correspondin. 2) The temperature at compressor exit. r134a properties table pdf liquid: For each 5C10F liquid is colder than base temperature, increase table valves 4 for R134a. The user can then plot the saturated liquid and saturated vapor lines in one of four common formats: If you are diiagramme a thermodynamic process or even a complete cycle, you can save the data returned by the property calculator and add it as another data series to the existing plot. More than 200K calculations per year. Respirator Selection Recommendations. The Section Properties Calculator calculation interface appears, allowing you to define the properties for your section. P3 =4 MPa, T3 =400 C ⇒ h3 =3213. When you compare the properties of 134a and R22, the problems will become obvious. Data sheets for thousands of alloys, polymers, and other engineering materials. It is also used in medium temperature refrigeration systems. Freon Calculator. setState_pTX Information. Do not use this procedure if you are using any other refrigerant. An R-22 Replacement for New ACs and Heat Pumps. Thus the temperature rise in the combustion step is a factor of the ratio of specific heats higher than in the Brayton cycle. 096000000000004 This is the 100-year Global Warming Potential for the refrigerant R134a. The logic is not much different that manual table look-up and interpolation — provide two independent properties, e. To help match the right components to each refrigerant, refer to the Danfoss Coolselector®2 calculator and Danfoss technical data sheets. ρ = 2 Kg/ 1 L = 2 Kg/ 0. Where: v = Specific volume u = Specific internal energy h = Specific enthalpy s = Specific entropy. R-134A Refrigerant Pressure Temperature Chart - R-134A is an inert gas also known as Tetrafluoroethane, and for air conditioner systems. Compressor efficiency can be defined as the ratio between this enthalpy increase and the actual measured enthalpy increase, i. In this refrigerant (CHClF2) property table, a state is visually presented (see the examples below) as a collection of properties (such as p, T, v, h, s etc. The solubility effects of synthetic lubricants in R-134a are less than for R-12 and mineral oils. For instance, the expression “7 mod 5” would evaluate to 2 because 7 divided by 5 leaves a. , NIST Standard Reference. Literature References. Secondly, could you please give the NIST link for the manual to calculate the thermodynamic properties from the equation as the link has dead. Find the atomic mass for each element by using the mass given in the Periodic Table or table of atomic weights. Saturated Properties Calculator watch tutorial view guide Calculates saturated liquid and gas properties for a given pressure or temperature using the IAPWS Industrial Formulation 1997. Today, R134A is commonly used in vehicle air conditioning systems, but it can also be used in refrigerators, freezers and other refrigeration equipment similar to R12. Thermodynamic Properties of HFC-134a Refrigerant (1,1,1,2-tetrafluoroethane) Engineering (I/P) Units Equations The Modified Benedict-Webb-Rubin (MBWR) equation of state was used to calculate the tables of thermodynamic properties. Where: v = Specific volume u = Specific internal energy h = Specific enthalpy s = Specific entropy. In this paper, a new refrigerator test system was built up according to the National Standard of India. In this test R-134a refrigerant is replaced by varied masshydrocarbon refrigerant, which was mixed with R-290 and R-600a with each 50%component ratio. properties,andmechanicalproperties. Properties of refrigerant R134a. The Industrial Refrigeration Consortium is a collaborative effort between the University of Wisconsin Madison and industry. 1,1,1,2-Tetrafluoroethane, R-134a; Genetron 134a; Suva 134a; HFC-134a; is a haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane), but with less ozone depletion potential. , and Peskin, A. The ease with which a parametric study can be performed without any programming is one of the many features of the H2FC-CF3 (Refrigerant R134a) property calculator. The efficiency factor is included to account for the actual performance of the compressor as opposed to the ideal, isentropic performance. In this test R-134a refrigerant is replaced by varied masshydrocarbon refrigerant, which was mixed with R-290 and R-600a with each 50%component ratio. Calculate online thermodynamic and transport properties of water and steam, based on industrial (IAPWS-IF97) or scientific (IAPWS-95) formulation. There is not enough data to determine whether the following common O-Ring materials are suitable for using in the environment containing FREON R134A or not. When a volume flow rate is calculated a chart will be generated showing related conversion values for mass versus volume flow for the specified substance density. Üsküdar İçerenköy Cad. [24] and Calm and Hourahan, [25] and Jung, [26]. The mass flow rate of the refrigerant is 0. pdf - Users Guide. Find the atomic mass for each element by using the mass given in the Periodic Table or table of atomic weights. 3 : T,P,rho,v,h,s,Q,Cv,Cp,w,Qm,x_R32,x_R134a,y_R32,y_R134a) MODE = TH (=15) Description: Calculate thermodynamic properties for given temperature and specific enthalpy In1 = Temperature in K In2 = Specific enthalpy in kJ/kmol In3 = mole fraction of first component (skip for pure fluid). 3 °C at atmospheric pressure. 0, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, 2010) Saturation Pressure-Temperature Data for R-134a (psig)* *Red Italics Indicate Inches of Mercury Below Atmospheric Pressure. R-134a Thermodynamic Properties Tables for Temperatures -70 °C to 101. The logic is not much different that manual table look-up and interpolation — provide two independent properties, e. Thermodynamic Properties of HFC-134a Refrigerant (1,1,1,2-tetrafluoroethane) Engineering (I/P) Units Equations The Modified Benedict-Webb-Rubin (MBWR) equation of state was used to calculate the tables of thermodynamic properties. Literature References. 3Kpa it is at saturation but no additional information is given on the quality how do I get the V, U, and Q. Advanced Cooling Technologies presents the factors that set the operating temperature range for heat pipe fluids, both theoretical and practical.