First, the introduction of heat pump principle and energy conversion analysis The so-called heat pump, is a use of artificial technology will be low-temperature heat energy conversion to high-temperature heat to achieve the heating effect of mechanical devices. The heat pump absorbs heat from a source of low temperature heat (eg, ambient air, groundwater, river water, seawater, sewage, etc.) and is then converted to a higher temperature heat source and released into the required space (or other area). This device can be used as heating heating equipment, cooling equipment can be used as cooling, so as to achieve the purpose of a machine. . Heat pump unit energy conversion is the use of its role as compressor, through the consumption of certain auxiliary energy (such as electricity), the compressor and the heat exchange system, the refrigerant circulates together by the ambient heat source (such as water, air) In the lower temperature heat, and then converted to higher temperature heat release to the circulating medium (such as water, air) into a high temperature heat source output. In this case, electrical energy is consumed due to the operation of the compressor. The operation of the compressor causes different states and different effects (ie, endothermic and endothermic condensation) of the circulating refrigerant in different systems to Recycled low temperature heat source to achieve the role of high temperature heat source and purpose. Second, the development of heat pumps and the application in our country Europe's first heat pump unit was manufactured in 1938. It is low-temperature heat source of water to the city hall heating, the output of hot water temperature up to 60oC. In the winter heat pump used for heating needs, can also be used in the summer cooling. The energy crisis in 1973 to promote the development of heat pump formed a climax. At present, Europe has highly developed heat pump theory and technology, this "double benefit" and environmentally friendly equipment in France, Germany, Japan, the United States and other developed countries have been widely used. Since the 1980s, there have been many developments in the application of heat pumps on various occasions. Aiming at the richer geothermal resources in our country, if the underground hot water which is used directly or after cooling is used as the lower heat source of the heat pump, the temperature difference of using groundwater can be increased and the utilization rate of geothermal energy can be increased. Areas have long been applied practice. At the same time, this equipment also presents an effective solution to the current situation of inefficient energy utilization and uneven distribution in China. Third, the technical analysis of heat pump: 1. Heat pump unit can achieve the effect of a dual-use, that is, the use of heat pump heating in winter, cooling in summer. This not only saves the cost of the refrigeration unit but also saves the area of ​​the boiler room and at the same time achieves the environmental protection. 2. If the owner has a geothermal well, you can use the heat pump device cascade conversion, can greatly facilitate the full and effective use of heat resources. 3. Used for domestic heating and domestic water heating and other energy consumption needs, if relying on direct heating will cause energy waste, is not desirable, the use of heat pump heating and warming in order to more efficient use of electricity. 4. The use of heat pump technology for heating and heating on the atmosphere and the environment without any pollution, and energy efficient, are green technologies and devices, in line with China's energy and environmental protection of basic policies, the user itself also virtually play a role in self-propaganda. Fourth, the economic analysis of heat pump heat pump heat economy is determined in many ways, it is compared with the boiler room heating, apparently has the following characteristics: 1. Operation surcharges are small, because: (1) the heat pump device does not require fuel delivery costs and custody fees, slagging transportation costs; (2) longer maintenance cycle, because the boiler equipment and high temperature flue gas contact, the components easily Damaged; and heat pump system only two parts movement, less wear and tear, usually without any maintenance. (3) Managerial personnel and labor intensity can be reduced, saving salary expenses. 2. Direct operating costs (electricity) is generally larger than the coal-fired boiler, which is the main heat pump costs. 3. The initial cost of the heat pump is often larger than the boiler room equipment (referring to the simple design for the winter heating). The same capacity of the heating equipment is more expensive than the boiler equipment. In addition, the initial investment and the size of the device, the engine room investment in civil construction is also related. Heat pump energy utilization analysis: the difference between groundwater storage temperature energy, belonging to the low heat source, heat pump conversion can be useful life and production process of heat. The heat pump has more than 1 (1: 3.2-5.4 above) energy efficiency, the use of energy is far superior to other ways of heating.
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