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6 – Modelling Since the main focus was on the design and performance of the tripartite gas cooler, the computer model was limited to include a hermetic com- pressor to determine the inlet conditions for the gas cooler, and three gas cooler units for preheating of hot water (GC A), space heating (GC B) and reheating of hot water (GC C). Figure 6.1 shows the principle of the modelled system. GC A CO2 Outlet Figure 6.1 Hot Water Heating GC B GC C Space Heating CO2 Inlet 172 Configuration of the CO2 heat pump model. 6.1.2 The Compressor Model The simple compressor model calculated the CO2 mass flow rate, the dis- charge temperature and the net power consumption of the hermetic com- pressor. The input parameters were as follows: ♦ The evaporation pressure p0 ♦ The suction gas temperature, TSG (or superheating) ♦ The swept volume at actual rpm, V& ♦ The isentropic efficiency, ηis and the volumetric efficiency, ηvol ♦ The relative heat loss, βHL [-] ♦ The discharge pressure, pGC The mass flow rate m& and the power consumption of the compressor PC were calculated as shown in Eqs. (6.1) and (6.2): (6.1) C&21 (6.2) P =m⋅(h −h) ⎛&⎞ & ⎜V⎟ m=⎜v ⎟⋅ηvol ⎝1⎠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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