PDF Publication Title:
Text from PDF Page: 047
4.4. Seasonal coefficient of performance (SCOP) When evaluating the COPs of the refrigerants, it was evident that an overall ranking of performance was difficult to elaborate, as their relationships varied with varying conditions. The SCOP is then a powerful indicator that allows assessing of the performance along the whole heating season. In Figure 4.6 the results, obtained from the method presented in section 3.2, are shown for both the cases of radiator and floor heating. 6.00 5.00 4.14 4.00 3.00 2.00 1.00 0.00 5.69 5.325 5.32 4.98 4.91 4.93 5.15 4.42 4.24 4.05 4.02 3.88 3.98 R410A R32 R152a R290 Radiator heating R1270 R1234yf Floor heating R1234ze(E) Figure 4.6. SCOP by refrigerant over the heating season for colder climate scenario (radiator and floor heating) As expected, R32 presents the highest seasonal performance (+6.5% compared to R410A for radiator heating, +6.8% for floor heating), as it maintains the highest COP in almost all the range of temperatures comprising the heating season. It is followed by R152a (+2.3% radiator, +0.1% floor), both outperforming R410A. The relative differences are shown in Figure 4.7 and Figure 4.8. In the radiator heating case, the lowest SCOP is obtained by R1234yf, with a total reduction compared to R410A of -6.4%, followed by R1234ze(E) with -3.9%. The hydrocarbons entail a smaller reduction, with -2.9% for propylene and -2.2% for propane. -38- SCOP [-]PDF Image | Next generation of refrigerants for residential heat pump systems
PDF Search Title:
Next generation of refrigerants for residential heat pump systemsOriginal File Name Searched:
MartinaLonghini_ThesisReport.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)