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According to Figure 6.26, the mean outlet temperature (Tm) dropped from about 30oC to 25oC when the city water volume was increased from 60 to 120 litres. On the other hand, the total volume of the thermocline zone rose about 30 to 45% at water flow rates in the range from 72 to 29 l/h. The simulations demonstrated that the smaller the charging volume and the lower the heating capacity of the gas cooler, the larger the relative effect of the conductive heat transfer between the hot and cold water reservoirs. When the volume of the thermocline zone has been estimated, the average COP for a CO2 heat pump during the charging period can be estimated by means of Eq. (3.26) in Section 3.33. The water volume and the mean temperature of the thermocline zone correspond to the minimum possible exergy loss in the DHW tank. In a practical system the mixing of hot and cold water during the tapping and charging periods may increase the exergy loss in the tank considerably. 6 – Modelling 203PDF 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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