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2643, Page 4 π = π + π π + π π2 + π π3 (4) π£01π2π3π π =π+ππ+ππ2+ππ3 (5) ππ 0 1π 2π 3π Table 2. Developed volumetric and isentropic efficiency correlations at different evaporation temperatures 1.0904 1.0380 -0.1929 -0.2044 0.0189 0.0249 -0.0003 0.0002 0.7532 0.0561 -0.1378 0.0351 -0.0029 0.5536 -0.1961 0.0240 πΌπ πΌππ ππ ππ ππ ππ ππ ππ ππ ππ -8 Β°C 1.0829 -0.1965 0.0202 -0.0001 0.7191 -0.1358 0.0455 -0.0048 0 Β°C 15 Β°C (a) Figure 3: Compressor developed (a) Volumetric efficiency correlations, and (b) Isentropic efficiency correlations; compared to correlations from the literature 3.2 Cycle modeling By referring to Figure 1, and considering the compression process is adiabatic but not isentropic, the enthalpy at the compressor discharge can be written as h2 = h1 + h2π β h1 πππ The expansion process is considered isenthalpic, hence h3 = h4 The power consumed by the compressor is calculated as π = πΜ ( h 2 β h 1 ) (6) (7) ( 8 ) (b) 17th International Refrigeration and Air Conditioning Conference at Purdue, July 9-12, 2018PDF Image | Transcritical CO2 Heat Pump Cycle
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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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