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Heat Pumps for Heating and Cooling 2.4. Air to Water Heat Pumps Air to Water heat pumps take heat from air outside the property and transfer this to water that can be used for space heating or as hot water for taps, showers, washing or laundry services within the house. The criteria by which heat is transferred can be simplified by way of the schematic shown for space conditioning system: The air source heat pump does not produce the sort of hot water temperature you would associate with a gas, LPG or oil powered boiler. With a boiler, you would expect the hot water to be heated to about 185°F (85°C), while a heat pump produces water to about 130°F (~55°C). This means, greater volume of water will be needed to satisfy the heating requirements. 2.4.1. How Do Air to Water Heat Pumps Work? The system is comprised of 2 parts: an indoor unit and an outdoor unit (which can be installed at distances in excess of 50 meters from the indoor unit). A third component, a hot water storage tank, is connected to the indoor unit. Heated water up to 130°F (~55°C) may either be used to supply direct hot water to taps/showers and/or to be routed around a low-temperature central heating network; under floor, radiator or a combination of the two. Application 1 This installation is for supplying hot water only. The installation utilizes an expansion tank to keep the pressure inside the hot water system. Auto air releasing valve helps to release air inside the water system automatically. 20PDF Image | Heat Pumps for Heating and Cooling
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