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Figure 1-6 Figure 1-7 An example of a typical outdoor unit for a modern air-to-air heat pump is shown in Figure 1-6. One of the indoor air handler units connected to this outdoor unit is shown in Figure 1-7. Although “ductless” split system heat pumps can provide reasonably good thermal performance, they are limited to space heating or cooling. They are also limited by the compromises associated with forced air distribution. These include drafts, dispersal of dust and allergens, potential for clogged air filters, cool air collecting at floor level as warm air rises to ceiling level, possible aggravation of respiratory illnesses and objectionable interior noise. MODERN AIR-TO-WATER HEAT PUMPS The same innovations that now make ductless air-to-air heat pumps viable in cold climate applications have been used to create air-to-water heat pumps. When operating in heating mode, these units absorb heat from outdoor air, concentrate that heat to increase its temperature, and transfer it to a stream of water or an antifreeze solution. The heated water can be used for a wide variety of loads such as hydronic space heating, domestic water heating or pool heating. Air-to-water heat pumps can also be reversed to extract heat from an interior stream of water and dissipate it to outside air. As such they can be used to supply several types of chilled-water cooling distribution systems. Modern air-to-water heat pumps provide an ideal combination of low ambient thermal performance along with the unsurpassed comfort and energy efficiency afforded by modern hydronics technology. One example of a modern air-to-water heat pump is shown in Figure 1-8. The remainder of this issue will discuss the details for applying modern air-to-water heat pumps in a variety of heating and cooling applications. Figure 1-8 9PDF Image | Heat Pump Systems 2020
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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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