| Air-source heat pump water heater consists of host machine, water tank and related connective pipe units or control system. It makes use of the special physical property of sealed work medium inside the heat pump to absorb heat energy from the air. As the work medium transforms in a physical state, the heat energy in the air can be gained by heat exchanger and then be put into the cold water; in other words, the compressor applies work to compress the low-temperature and low-pressure gaseous refrigerant which expires from the evaporator, into a high-temperature and high-pressure gas; as soon as this gas flows into the condenser, exchanging heat with the cold water, it is compressed into low-temperature liquid which emits abundant heat energy to heat the water and warm it up. Then after the throttling and decompressing, the low-temperature and high-pressure liquid in the evaporator absorbs the heat energy in the air by the fan system, and evaporates into a low-pressure gas, inhaling into the compressor. This process repeats itself to keep on removing heat energy in the air into the water, therefore making hot water. Since one kilowatt-hour electricity consumed by the compressor can make work medium pass 2-6 times of heat energy, it is more efficient and energy-saving than a traditional water heater. |
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