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be transferred directly to the top part of the water tank and the colder water in the upper part will be pushed down to the lower part, through the other connection tube (light blue). Figure 31. Schematic layout of tank modification Furthermore, to solve the problem of high water return temperatures from the water tank to the heat pump, other tank modifications can be suggested (Figure 32). As shown in the figure, one more partition plate is suggested to be positioned in the lower part of the water tank. One connection tube is placed between the two lower parts of the water tank to ensure that the colder water flows to the lowest part of the tank. Furthermore, the control algorithm should be set to keep the heat pump’s compressor running at a low speed for as long time as possible until the return water reaches a certain limit temperature. In such a way, the colder water will be pushed to the lowest part of the water tank before it is transferred to the heat pump. The heat pump will continually work with lower water inlet temperature than before. Moreover, the cold city water inlet coil should be connected to the bottom part of the tank as a heat exchanger. Each time, when the end user uses the tap water, the cold water will further cool down the water inlet temperature to the heat pump as well. 40PDF Image | CO2 heat pumps for the Swedish market
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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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