I realize that r422d has been getting used in retrofits for awhile. Hi guys, i am going to retrofit an r22 carrier chiller 30dq120 with recip compressor. The high proportion of r125 causes with r417ab and r422d a higher mass flow than with r407c, a lower discharge gas temperature and a relatively high superheating enthalpy. For example, hcfc22 is an acceptable substitute for r502 in industrial. R438a, r453a, r448a and r449a are potential replacements but may require an oil change. I know there have been problems with elastomeric seals leaking. Refrigerant pressure temperature chart hvac refrigeration this page offers a temperature pressure relationship chart for use in working with hvac systems that use r410a, r22, and r4a. Home products genetron 422d a longterm nonozone depleting replacement for r22 in low and mediumtemperature commercial refrigeration systems. The absolute pressure p in,ats is directly measured by means of a piezoelectric absolute pressure transducer. Find answers to your refrigerants questions with honeywell refrigerants suite of apps, calculators, and software.
With regard to the thermodynamic properties, they are particularly suitable for commercial. I am quite mixed up if will use the r417a or r422d. Bitzer offers the whole program of reciprocating, scroll and screw. R4a is an hfc with no ozone depletion potential, but it doesnt work as well. A2l refrigerant at core of fruit store cooling post. All the thermodynamic properties are calculated by the software refprop. Honeywell r422d refrigerant 25lb r422d r22 substitute.
Pdf experimental evaluation of r410a, r407c and r4a. It also provides a close capacity match to r404a, extended operating envelope when compared to propane or air conditioning refrigerants, and high energy. Lower discharge temperature than hcfc22, which may extend compressor longevity. Introduction mission greenchills mission in developing this document is to assist food retailers with an orderly, low cost transition option from hcfc22 to a substitute refrigerant, and to provide food retailers with a set of best practices related to the conversion process. Description r422d is a great replacement for r22 and comes in a 25 pound cylinder. All refrigerants use r11 as a datum reference where r11 has an odp of 1. R422d is a hfc refrigerant blend of r125, r4a and r600a.
Following the entry into force of european regulation no. Investigation and analysis of r463a as an alternative refrigerant to. With a gwp of just 97, it provides a longterm refrigerant solution. Does anyone know if there are any manufactures currently producing 422d equipment. The cooling capacity of the refrigerant pot frig was obtained by the sum of the power of the heat. Genetron properties suite provides results in tabulated form exportable to excel and in diagrams you are used to pressureenthalpy, temperatureentropy. Thermodynamic analysis of r422 series refrigerants as alternative. Energies free fulltext investigation and analysis of. Blends and specialty, refrigerant, refrigeration, including r408a refrigerant, 24 lb.
For expansion valves or optimized capillary tube systems, the typical charge size relative to the hcfc22 being replaced appears below. As part of its continuous research into replacements for ozone depleting substances and low greenhouse warming potential gwp refrigerants, refrigerant solutions ltd rsl has developed non flammable and energy efficient dropin alternatives to both r22 and r404a. The pressuretemperature pt chart is a valuable tool that service technicians use to check proper system operation. R422d pressure enthalpy chart the engineering mindset. The chart shows the pressure, temperature and enthalpy at the current mouse position. A fieldproven refrigerant that replaces r22 without requiring an oil change.
How to read a pressure temperature chart for superheat. Oil type for different types of refrigerant product line. Additional refrigeration information and resources are located below the chart. Always check the compressor manufactures recommendations for oil on. Do not use in systems that employ flooded evaporators. R417a, r417b, r422d, r438a and r427a as substitutes for r22. The heat pump was extensively instrumented, and the air enthalpy and refrigerant mass flow rate methods. The collected data were recorded and analyzed using excel software, calculating following key parameters to characterize system performance. Larger valves may be needed in cases where the r22 valve is near its maximum capacity.
The average relative capacity indices obtained for r290, r600a and r1270 were 35. Refrigerant compressors evaporation temperature, condensating temperature and capacity evaporation temperature, condensing temperature and refrigerant compressor capacity. Mo29 r422d remains the multipurpose refrigerant and gives a satisfactory performance in the majority of dx water chillers. Even if r407c has thermophysical properties similar to those of r22 and it is. One of the options considered is the dropin refrigerant r422b.
These properties indicate that there are differences in the optimization of system components and a heat exchanger between liquid and suction. Comparative analysis of the performance of hydrocarbon. Generally, the thermophysical properties of r290 and r1270 matched those of r22 and the two refrigerants exhibited better performance than r22 in subcooling heat exchanger refrigeration system. Genetron 422d can, in most cases, be used with existing hcfc22 thermostatic expansion valves. R422d, also known as isceon mo29, is an hfc blend designed to be a simple dropin retrofit replacement for r22 in many refrigeration and air. Refrigerant pressure temperature chart hvac refrigeration. This research presents the development of r463a refrigerant, a nonflammable refrigerant that was retrofitted to replace r404a. R422d refrigerant the best r22 refrigerant replacement. 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. Also seen that no one is confirming anything about oil change and oil seals. The software is able to evaluate in real time the cop, the entropy and the. R422d refrigerant is a non flammable blend of hfc 125, hfc 4a, nbutane, isobutane and isopentane which is zero odp. The difference between r4a and r22 air conditioner. Its ultralow gwp of only 146 below 150 makes it an fgasready solution.
Honeywells r422d refrigerant, is a replacement for refrigerant r22. If inadequate oil return is observed for ab addition of poe may be needed. Since fluorochemical refrigerants were introduced to the market more than 85 years ago, the freon brand has been developing and evolving the chemistry behind them. R449a pressure enthalpy chart the engineering mindset. The potential for a single molecule of the refrigerant to destroy the ozone layer. Thermodynamic analysis of r422 series refrigerants as alternative refrigerants to hcfc22 in a vapour compression refrigeration system. In particular, r422d is a zeotropic mixture of r4a r125 r600a 31.
The impact on global warming of the substitution of. Download a pdf copy of the pressure enthalpy chart for both metric and imperial units. R22 is a singlecomponent low ozone depleting hcfc refrigerant with a large installed base of air conditioning and refrigeration applications r22 is going through a mandatory phaseout beginning with new equipment in 2010 and production scheduled to end in 2020 14 sae male fitting, spring loaded relief valve, builtin handles and inversion stand. The bubble to the left is the portion of the diagram where the refrigerant is in the saturated condition. It has a gwp greater than 2500 and virgin product cannot be used for servicing after 01012020 in the eu. Change in energy performance as a result of a r422d. R22 has been widely used as refrigerant in air conditioning and in medium and. Lluis giralt lopez chemical engineering industrial gas technical department of gas servei s. Refrigerant grade propane r290 is compatible with the main oils out there, but has a tendency to degrade natural rubbers and silicon rubbers, so check your hoses frequently for degradation. Hcfc22 is a high capacity, efficient refrigerant employed in a significant number of air conditioning systems. The electric power of the compressor pot abs was obtained by measuring the wattmeter. Below is a list of the different oil types for the different refrigerants in our units. Pressure enthalpy diagram for refrigerant r22 and r422d. Systems being charged with genetron 422d require a slightly smaller charge size than hcfc22.
The software is able to evaluate in real time the cop, the entropy and the enthalpy of all points of. Properties of refrigerant r22 dichlorodifluoromethane saturated liquid and saturated vapor imperial and metric units sponsored links r22 is a single hydrochlorofluorocarbon hcfc compound. R422b testing and controversy discussed this website requires certain cookies to work and uses other cookies to help you have the best experience. Vaporcharging may result in the wrong refrigerant composition and could damage the system. A french wholesale fruit distributor is using honeywells mildly flammable a2l refrigerant solstice l40x in a new stateoftheart storage warehouse. R422d, also known as isceon mo29, is an hfc blend designed to be a simple dropin retrofit replacement for r22 in many refrigeration and air conditioning applications, including low and medium temperature direct expansion dx refrigeration applications, commercial supermarket systems, stationary dx air conditioning applications and dx water chillers. It was typically used to replace r22 in medium and low temperature refrigeration systems. The ortolan facility in marmande, southwest france, stores fruit and vegetables from local growers for delivery to the european market and beyond. Understand refrigerant properties, and download support materials, case studies and videos from the city. This refrigerant fluid, originally was designed to replace r22 in existing direct expansion water chiller systems. Most refrigerants used today are substances obtained by chemical synthesis and consequently have ideal properties for the specific purpose.
R22 refrigerant is an hcfc and will be illegal in 2020. R422d is the quickest and easiest way to replace r22 in existing systems. Simulate your system with the right refrigerant and export the results to excel. Because the properties of the new zeotropic refrigerant blends are different than traditional refrigerants its useful to know how to read a twocolumn pt chart by jim lavelle. On the results page, you will get a detailed list of all the points around the cycle. Alternative refrigerants with lowgwp are under investigation for residential heat pumps, airconditioners and heat pump water heaters, since r410a, r407c and r4a have gwp of 2088, 1650 and 1430. The facility has six 300tonne cold rooms, which were retrofitted last year. Thermodynamic analysis of r422 series refrigerants as.
What you need to know about the hfc refrigerant phaseout. Comparison chart for hfc and hfo replacement refrigerants. Also heared that the refrigerant charge should not be charged the same weight as stipultaed per chiller nameplate but a 10% lower. The thermodynamic properties of the r422 series refrigerants are. A longterm nonozone depleting replacement for r22 in low and mediumtemperature commercial refrigeration systems. What you need to know about the hfc refrigerant phaseout new epa rules are phasing out hydrofluorocarbons hfcs due to their high global warming potential. R12 dichlorodifluoromethane properties thermodynamic properties of saturated and superheated dichlorodifluoromethane cf 2 cl 2 specific volume, enthalpy and entropy. If you want me to add a refrigerant, just send me an email or post a message into the guestbook. The hydrocarbons in rs44 improve the oil return to the compressor to extend the life of the compressor. It can also be used in residential and commercial air conditioning and medium to lowtemperature refrigeration systems. Many of these, however, have negative effects on the environment, in particular they tend to destroy the ozone layer i. Purchasing freon refrigerants by the chemours company provides a reliable supply of highquality refrigerants to use in new equipment and retrofit opportunities, and to service installed air conditioning and refrigeration systems. For more information and comprehensive articles on hvac refrigeration see our refrigeration category.
R422d is an easytouse, nonozonedepleting hfc refrigerant originally designed to replace r22 in existing direct expansion water chiller systems. Substitutes for r22 in refrigeration systems refrigerant report. The following tables show the percentage composition of refrigerant blends found acceptable acceptablethis designation means that a substitute may be used, without restriction, to replace the relevant ods within the enduse specified. These values were confirmed with property data sheets provided by the refrigerant manufacturers. Compositions of refrigerant blends significant new. So i am at the parts house chatting with other techs about the price r22 and i come to find out that there are some techs that are no longer buying r22 and just adding 407c to r22 systems that are low on charged. The difference between r4a and r22 air conditioner refrigerants hunker. Explore all our product offerings in the honeywell city. The majority of these systems utilize mineral oil lubricants. R417a, r417b, r422d and r438a as substitutes for r22 r427a as substitute for r22 r32 as substitute for r22 hfohfc blends as alternatives to hfcs halogen free refrigerants nh 3 ammonia as alternative refrigerant r723 nh 3dme as an alternative to nh 3 r290 propane as substitute for r502 and r22 propylene r1270 as an alternative to propane. All you are required to do is evacuate the r22, change the valve systems, charge with r422d in a liquid form, and check your. It is compatible with both traditional mineral and synthetic lubricants so that a retrofit is not required. The refrigerant thermodynamic properties of all the test refrigerants were determined from a commercially available software program refprop v4.
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