Discover the Game-Changing Advantages of R-32
Unlike blended refrigerants, R-32 is a single component refrigerant: Difluoromethane. Therefore, it has no glide, unlike the R-400 series blends, and technicians can become familiar with its pressure temperature characteristics more easily. Reclaim is also easier to manage, as fractionation is not a concern. R-32 has a higher capacity than R-410 and a lower mass flow rate, which typically equates to lower charge amounts and relatively smaller heat exchangers. Compressor manufacturers have developed new compressor lines to maximize the benefits of R-32, while allowing equipment designers to incorporate minimal changes to existing R-410A system layouts. In addition, R-32 will allow future SEER requirements to be attained more easily, resulting in an overall more efficient system. R-32 has been used in Japan since 2013, and Europe is quickly adapting to this refrigerant, with more than half of new HVAC equipment in 2018, as they try to meet the F-Gas quota targets.
Table 1 – R-410A vs. R-32 comparison: Calculated using NIST Cycle D-HX, Version 1.0; conditions: 45° F evaporator and 110° F condenser temperature, 10° F superheat/subcooling.
|45°F EVAP 110°F CONDENSER||R-410A||R-32||DIFFERENCE|
|COP COMPRESSOR COPC||3.146||3.303||(-)5%|
|MASS FLOW RATE LB/HOUR||742||476||(-)36%|
|DISCH TEMP °F||178||214||(+)20%|