This paper uses the methodology for evaluating the thermodynamic performance potentials of alternative refrigerants described in, for example, Reid et al. (1987) and Poling et al. (2001)—and illustrated in recent publications by Brown (2007a, 2007b, 2008)—to evaluate 56 potential R-114 replacement refrigerants for high-temperature heat-pumping applications. In particular, the 56 refrigerants consist of 36 pure fluids and twenty near-azeotropes. An idealized vapor compression refrigeration cycle is used to estimate the performance potentials (coefficient of performance [COP] and volumetric heating capacity [VHC]) of the 56 refrigerants. In addition to the COP and VHC, other basic cycle data are provided for each refrigerant. Furthermore, other relevant data (e.g., global warming potential, flammability, and toxicity) are provided. Of the 56 refrigerants, 13 should receive further consideration as potential R-114 replacement refrigerants. Three—R-245eb, R245ca, and R-245fa are lower-pressure fluids (implying larger systems); eight—SF5CF2H, R-E236fa, R-E245cb1, R-236ca, R-236ea, R-143, R-236cb, and R-254cb—have similar operating pressures as R-114 (implying similarly sized systems); and two—R-764 and R-717—are higher-pressure fluids (implying smaller systems) with high compressor discharge temperatures.
Units: Dual
Citation: ASHRAE Transactions, vol. 114, pt. 2, Salt Lake City 2008
Product Details
- Published:
- 2008
- Number of Pages:
- 9
- File Size:
- 1 file , 470 KB
- Product Code(s):
- D-SL-08-060
