The working principle of heat pump water heaters and home air conditioners, refrigerators and other works basically the same, through the mobile media (formerly generally freon, now replaced by alternative Freon products) in the evaporator, compressor, condenser and expansion valve and other parts In the gas phase changes (boiling and condensation) of the cycle to low-temperature heat transfer objects to objects. The specific work process is as follows: â‘ superheated liquid medium in the evaporator to absorb the heat of low-temperature objects, evaporated into gas media. â‘¡ evaporator gas out of the compressed media after the compressor, into a high temperature and pressure of the gas media. â‘¢ high temperature and pressure of the gas medium in the condenser heat will be released to high temperature objects, while itself into a high pressure liquid media. â‘£ high-pressure liquid media pressure in the expansion valve, and then become overheated liquid media, into the evaporator, the initial cycle. The performance of the heat pump is generally evaluated by the coefficient of performance (COP). The coefficient of performance is defined as the ratio of the amount of heat transferred to the input power, expressed as the ratio of the amount of heat transferred from a cryogenic object to a high temperature medium and the amount of power required. The heat pump typically has a coefficient of about 3-4, which means that the heat pump is able to transfer 3 to 4 times the energy of its own energy from a cryogenic object to a hot object. Now Europe and the United States are racing to develop a new type of heat pump. The new heat pump reportedly has a performance factor of 6 to 8. If this figure can be popularized, this means that energy will be more effectively utilized. Heat pump penetration will also be amazingly improved. The current maximum output temperature of the heat pump is about 110 degrees, beyond this temperature there may be the danger of media decomposition. Due to the damaging effects of Freon on Earth's atmospheric ozone, in order to protect the Earth's ecological environment, in addition to increasing the factor of the heat pump and making efficient use of energy, various countries are also devoted to the development of new refrigerants. Currently there are alternative freon media has been applied. Heat pump hot water system includes heat pump host and heat exchange water tank in two parts. The main part of the heat pump includes air-cooled evaporator, compressor and expansion valve; heat exchange tank is a built-in condensing coil storage tank. Refrigerant (working fluid) in the evaporation tube to absorb the heat in the ambient air by the heat pump cycle by the condensation coil in the tank to release heat and heat the water in the tank. To figure out the working principle of the heat pump, we must first understand the working principle of the refrigeration system. Refrigeration system (compression refrigeration) generally consists of four parts: compressor, condenser, throttle, evaporator. The working process is: low temperature and pressure liquid refrigerant (such as Freon), first in the evaporator from a low temperature heat source (such as chilled water) heat and gasification. The compressor then draws the vaporized refrigerant gas in the evaporator and compresses it into the condenser, at which point the refrigerant gas becomes a high-temperature, high-pressure gas. The high-temperature high-pressure gas is condensed in a condenser by a high-temperature heat source (for example, cooling water) to become a liquid and becomes a high-temperature and high-pressure liquid refrigerant. And then intercepted by the throttle valve into a low temperature and low pressure liquid refrigerant. This completes a refrigeration cycle. For a split heat pump air conditioner, the condenser is placed outdoors in the summer and the evaporator is placed indoors. Run the indoor heat delivered to the outdoors. In winter, the evaporator is placed outdoors and the condenser is placed indoors so that the outdoor heat is delivered to the interior. Of course, we do not disassemble equipment for the season, but through the physical conversion valve so that the evaporator and condenser transposed. Heat pump air conditioning inside a four-way valve. In cooling conditions, the indoor heat exchanger is the evaporator, and the outdoor heat exchanger (the one that calls out the hot air in the summer) is the condenser. In winter heating, the four-way valve to switch to change the flow of refrigerant, this time, the indoor heat exchanger is the condenser, outdoor heat exchanger (winter out of the cold wind that thing) is the evaporator. As the winter out of the cold, the heat exchanger to frost, so frost to a certain extent, the four-way valve to switch, air conditioning into the summer cooling conditions, outdoor heat exchanger to get the heat, defrost, defrost After the completion of the four-way valve and then switch to the heating state. In case of defrosting, the fan of the indoor unit is stopped to prevent cold air blowing into the room. The heat pump water heater is a refrigeration system that uses the heat released by the condenser to heat it. It is called the "heat multiplier" by the image. Currently on the market widely appeared on the home air conditioner, it has been widely used in heat pump heating, the heating coefficient has been as high as 3 or more. Well, the principle of using heat pumps to make hot water, electricity consumed once the hot water, electricity consumption than ordinary electric water heater to obtain more than three times, which is not traditional water heater can match.
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