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The COP of the CO2 heat pump unit at 5oC inlet water temperature was used as the reference (i.e. COPrel=1.0). 6 – Modelling 1.00 0.95 0.90 0.85 0.80 0.75 0.70 0.65 DHW 80°C DHW 60°C 5 10 15 20 25 30 Inlet Water Temperature [°C] Figure 6.17 The simulated relative COP in the DHW heating mode as a function of the inlet water temperature. The set-points for the hot water temperature were 60 and 80oC. The COP was even more sensitive to variations in the inlet water tempe- rature in the DHW mode than in the combined mode, since the entire heating capacity of the CO2 heat pump unit was used for hot water production. As an example, by increasing the inlet water temperature from 5oC to 20 and 30°C, the relative COP was reduced by 17 and 34%, respectively. This was approximately 3 and 10% percentage points higher than that in the combined mode. 191 Relative 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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