Primarily designed for utilization of waste heat with low grade temperature sources, the charts for organic rankine cycle can utilize temperatures below 212 f or 100 c and up to 180 c for standard refrigerants such as r4a or r245fa. In this article we have visualized the flow boiling of refrigerant r245fa in a different configuration of a pin fin enhanced microgap, which allows spanwise fluid movement for improved vapor management, as well as 3d electrical connectivity via the pins, to. Theoretical research on r245fa condensation heat transfer. Thermophysical property and heat transfer analysis. Refrigerant properties motor vehicle air conditioning. Opteon xp44 r452a refrigerant low global warming potential refrigerants for air conditioning and refrigeration opteon refrigerants for air conditioning, refrigeration, and heat pump applications have the optimal balance of performance, environmental sustainability, safety, and cost. Some of these refrigerants in the real fluids category, e. Compare performance of multiple refrigerants, learn the line sizing, and much more. It is important for both consumers and technicians to be aware of these alternative refrigerants, their properties, and proper servicing procedures. The fluids are grouped into real fluids, ideal gases, brines, incompressible substances, and mixtures.
Genetron 245fa r245fa genetron az20 r410a applications. Simulate your system with the right refrigerant and export the results to excel. All the fluid properties on this page are calculated using the opensource property package coolprop. For full table with properties and applications rotate the screen. Thermodynamic properties of refrigerant r4a, also known as 1,1,1,2tetrafluoroethane, r4a, freon 4a, forane 4a, genetron 4a, florasol 4a, suva 4a or hfc4a and norflurane inn. All refrigerants use r11 as a datum reference where r11 has an odp 1. This publication was designed to give the performance curves for organic rankine cycle and supercritical co2 brayton cycle. Properties of al2o3 nanoparticle and r245fa refrigerant are given in table. R245fa provides high accuracy thermodynamic properties for r245fa 1,1,1,3,3 pentafluoropropane, c3h3f5, mw 4. Alibaba manufacturer directory suppliers, manufacturers. Genetron performaxtm lt, r407f thermodynamic properties.
For the whole range of operating conditions, comparing the maximum cycle thermal efficiency, r245fa is 4. Blends and specialty, refrigerant, refrigeration johnstone. Pdf simultaneous experimental comparison of lowgwp. Cfc11 is also used in centrifugal chillers and has been successfully replaced with hcfc123. Thermophysical property and heat transfer analysis of r245fa. Accurate thermophysical properties are available for several fluids. Chapter 20, thermophysical properties of refrigerants. Honeywell refrigerant helps homeowners convert the suns heat. An overview of the properties and applications of hfc245fa g. R449a opteon xp40 opteon xp40 r449a is a nextgeneration hfobased refrigerant that combines excellent cooling performance with improved energy efficiency and environmental properties. Chapter 20, thermophysical properties of refrigerants, ashrae. Cfc1 is a lowpressure refrigerant typically used in centrifugal chillers. If you want me to add a refrigerant, just send me an email or post a message into the guestbook. For t 180 k, all properties on the saturatedliquid line and saturatedvapour line were calculated as well, the density for the vapour fraction x 0.
Viscosity of refrigerants and other working fluids from residual entropy scaling. Refrigerant r4a properties thermodynamic properties of refrigerant r4a. Aug 05, 2017 thermodynamic properties of refrigerant r4a, also known as 1,1,1,2tetrafluoroethane, r4a, freon 4a, forane 4a, genetron 4a, florasol 4a, suva 4a or hfc4a and norflurane inn. Properties and performance r407f is designed to meet the needs of many types of new and existing refrigeration systems. Im doing my masters thesis and need to modelate model r245fa for a turbine expansion ansys cfx. Nanorefrigerant, r245fa, thermophysical properties, heat.
Hfc245fa is also known as pentafluoropropane and by its chemical name. With this density, all other properties that are defined within the twophase region can be calculated. Surface tension values are only available along the saturation curve. Opteon xp44 r452a refrigerant low global warming potential refrigerants for air conditioning and refrigeration opteon refrigerants for air conditioning, refrigeration, and heat pump applications have the optimal balance of performance, environmental sustainability, safety, and. Compare performance of multiple refrigerants, learn the line sizing, and much more all for free. Whether used in waste heat recovery for geothermal industries, power generation systems, industrial processes or transportation, orc systems that use honeywells working fluid increase the amount of clean energy and reduce co 2 emissions.
However, these refrigerants are flammable safety class a2l, meaning the refrigerant quantity in the system must be considered. Tx properties of binary r4ar245fa system sciencedirect. This is a haloalkane refrigerant with thermodynamic properties similar to r12 dichlorodifluoromethane but with insignificant ozone depletion. Fluid properties pure and pseudopure fluid properties r245fa. Use the refprop dll in your intranet applications with your site license. Introduction 1,1,1,3,3pentafluoropropane hfc245fa is a hydrofluorocarbon used primarily for closedcell spray foam insulation produced by honeywell and in asia by sinochem. Analysis of the properties of working substances for the organic. Download table r245fa properties 11 from publication. Properties of refrigerants n low boiling point and high latent heat of. Honeywell markets hfc245fa under the enovate and genetron 245fa brand names. Distributor agreements are available to integrate refprop into your software and hardware products. Butane and r245fa have the same net efficiency, for 0. R407f is a zeotropic hfc refrigerant blend, which is rated a1 by ashrae lowest levels of toxicity and flammability, having zero ozone depletion potential and a global warming potential of 1825.
Pvtx properties of binary mixed refrigerant r245far152a for. In 16th international refrigeration and air conditioning conference at purdue, july 1114, 2016. Chemical notation, cf3 ch2chf2 1,1,1,3,3 pentafluoropropane. The chart shows the pressure, temperature and enthalpy at the current mouse position. It has long been used in a variety of airconditioning and refrigeration applications in a variety of. R245fa r245fa is primarily used as a foam blowing agent. It is because of the low steam density and high liquid density of r245fa. The refrigerants have a fullpage thermodynamic property chart on pressureenthalpy coordinates with tabular data for the. Genetron 245fa is a proven working fluid in organic rankine cycle systems. R245fa is primarily used as a foam blowing agent but it is also used in some niche refrigeration and air conditioning applications, including heat treansfer and heat recovery systems, as well as in certain centrifugal compressors. Recently, a new refrigerant r1233zd has been introduced as a low gwp alternative for r245fa. The potential for a single molecule of the refrigerant to destroy the ozone layer. Abstract this chapter presents data for the thermodynamic and transport properties of refrigerants.
Comparing r1233zd and r245fa for low temperature orc applications. International refrigeration and air conditioning conference. Short fundamental equations of state for 20 industrial fluids. R245fa provides high accuracy thermodynamic properties for r245fa 1, 1,1,3,3 pentafluoropropane, c3h3f5, mw 4. An overview of the properties and applications of hfc245fa. R245fa is nonflammable, nonozonedepleting and has low toxicity.
Organic rankine cycle and supercritical co2 performance. On the results page, you will get a detailed list of all the points around the cycle. It is also used in some niche refrigeration and air conditioning applications including heat treansfer and heat recovery systems, as well as in certain centrifugal compressors. Refrigerant r22 properties properties of refrigerant r22 dichlorodifluoromethane saturated liquid and saturated vapor imperial and metric units. The reclaimed refrigerant certification program includes purity specifications for reclaimed refrigerants.
The heat transfer properties of honeywells r245fa, including its low boiling point of 59. Pdf experimental comparison and optimization guidance of. Site licenses are available for refprop version 10. R4a is also known as tetrafluoroethane cf3ch2f from the family of hfc refrigerant. With a gwp of just 97, it provides a longterm refrigerant solution. A complete list of all the materials implemented in coolprop can be found here.
Ees provides builtin thermophysical property data for the fluids listed below. First, i want to try it considering it to behave like an ideal gas, because the pressures of my expantion are very low. R245fa, r4a, r410a, and r32 to explore the effects of fluid properties on refrigerant distribution in the vertical header of a reversible microchannel heat exchanger. Nist national institute of standards and technology has released a new version of the nist standard reference database 23, thermodynamic and transport properties of refrigerants and refrigerant mixtures refprop. Oct 28, 2009 r245fa is nonflammable, nonozonedepleting and has low toxicity. In this article we have visualized the flow boiling of refrigerant r245fa in a different configuration of a pin fin enhanced microgap, which allows spanwise fluid movement for improved vapor management, as well as 3d electrical connectivity via the pins, to cool a footprint area of 1 cm x 1cm. The significant new alternatives policy snap program has approved a number of acceptable alternative refrigerants for motor vehicle air conditioners mvacs, subject to use conditions. Mar 28, 2005 abstract this chapter presents data for the thermodynamic and transport properties of refrigerants. Pvtx properties of binary mixed refrigerant r245far152a. Refrigerants color codes refrigerants and their color codes. With the discovery of the damaging effect of cfcs and hcfcs refrigerants to the ozone layer, the hfc family of refrigerant has been widely used as their replacement.
This paper analyses the effect of this new fluid as a dropin for r245fa into an existing 75 kw variablespeed, oilfree low temperature. Both substances are the preferred choice in terms of their properties and are also used as basic components in hfohfc blends. The refrigerants have a fullpage thermodynamic property chart on pressureenthalpy coordinates with tabular data for the saturated liquid and vapor on the facing page. Table 2 tables 24 have been used to solve equations in ees software. Refrigerant changeover from hfc r4a to hfchfo r450a r5a. Comparing r1233zd and r245fa for low temperature orc. Hfc245fa is also known as pentafluoropropane and by its chemical name 1,1,1,3,3,pentafluoropropane. Since the entry into force of the montreal protocol in 1989, people began looking for alternative course of cfc11 foaming agent. Lehrstuhl fur thermodynamik software fluidcal for the. The reclaimed refrigerant and refrigerant testing laboratory certification programs are based on this standard. The analysis was carried out with nanoparticles average size of 50 nm and volume concentration from 1% to 5%. By comparing the results of experiments, r245fa was found to the best distribution. Blends and specialty, refrigerant, refrigeration, including r408a refrigerant, 24 lb.
I would like to know if the peng robinson refrigerant option is a good one. Low gwp hfos and hfohfc blends the current refrigerant. Ansiashrae standard 361992 safety group classification. You have clicked a page that seems to be very popular. The uncertainty of temperature measurement was estimated to.
Refrigeration n changes phase due to change in pressure n most common cryogens are n solid carbon dioxide n liquid carbon cook chill systems n used to replace warm holding of foods n cook chill system. Cf 3 ch 2 chf 2 1,1,1,3,3 pentafluoropropane critical temperature c critical pressure bar liquid density kgm. Please follow the steps below to select the data required. Hfc245fa physical properties and environmental characteristics make it suitable for a. Characteristics medium temperature refrigerant gwp glide k capacity efficiency r4a 1430 0.
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