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Figure 5.35 The measured COP as a function of the high-side pressure at varying supply/return temperatures for the SH system. Figure 5.36 presents the relationship between the high-side pressure and the temperature approach. 5 – Experimental Results 3.5 3.0 2.5 2.0 7.5 8.0 8.5 9.0 9.5 10.0 Gas Cooler Pressure [Mpa] 3.15 3.01 2.78 33/28°C 35/30°C 40/35°C 3 2 1 0 7.5 8.0 8.5 9.0 9.5 10.0 Gas Cooler Pressure [MPa] Optimu m high-side pre ssure 33/28°C 35/30°C 40/35°C Figure 5.36 The measured temperature approach as a function of the high-side pressure at varying supply/return temperatures. As a result of the large average temperature difference, there were only minor variations in the temperature approach when increasing the high- side pressure. Hence, the optimum high-side pressure was mainly deter- mined by the marginal rise of the CO2 outlet temperature from the com- pressor and the marginal power input the compressor. 141 Temperature Approach [K] 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
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