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Heat Pumps for Heating and Cooling 4.4. Heat Transfer from Water to Heat Pump The water in Earth and the refrigerant in the heat pump system pass through a tube- in-tube coaxial heat exchanger. The tube-in-tube heat exchanger is configured as a tube positioned within another tube. The water flows through the inner tube while the refrigerant flows through the outer tube. In the heating mode, heat is transferred from the water to the refrigerant, causing the refrigerant to boil to a vapor at low temperatures. In the cooling mode, heat from the hot vapor refrigerant is transferred to the water, rejecting heat from the system and allowing the refrigerant to condense into a liquid. 4.4.1. Evaluating Open Loop Ground Water Feasibility There are three notable considerations that should be addressed when investigating this use of open loop system. • Water Quality − The first consideration is water quality. If water is contaminated i.e. contain silt, calcium carbonate, sulfur compounds, salt, iron, bacteria or other contaminant, it will gradually foul and scale the internal walls of the heat exchanger tubes. This will cause a rapid 54PDF Image | Heat Pumps for Heating and Cooling
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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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