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5 – Experimental Results 4.0 3.8 3.6 3.4 3.2 3.0 33/28°C, 60-80°C 35/30°C, 60-80°C 40/35°C, 60-80°C 8.0 8.5 9.0 9.5 10.0 Gas Cooler Pressure [MPa] Figure 5.6 Overview of the measured maximum COP as a function of the high-side pressure at varying temperature levels for the SH and DHW systems. The COP vs. the Hot Water Temperature Figures 5.7 through 5.9 show the measured COP for the CO2 heat pump unit at fixed supply/return temperatures for the space heating system and varying hot water temperature. The evaporation temperature was -5oC (3.046 MPa), the suction gas superheating was 2.4 K ±0.4 K, the CO2 mass flow rate was 1.42 kg/min ±2% and the city water temp. was 6.7oC ±0.8 oC. 4.0 3.5 3.0 2.5 7.5 8.0 8.5 9.0 9.5 10.0 Gas Cooler Pressure [MPa] 3.98 3.75 3.57 33/28°C, 60°C 33/28°C, 70°C 33/28°C, 80°C Figure 5.7 The measured COP at 33/28oC supply/return temperatures for the SH system and varying DHW temperature. 120 COP [-] COP [-]PDF Image | Residential CO2 Heat Pump System for Combined
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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
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