If you recently concerned about the industry news, we must be familiar with the words "sea water heat pump central air conditioning", "heat pump hot water system", "geothermal heat pump central air conditioning" and other words, the recent heat pump products can be described as frequent introduction. What is the heat pump? Heat pump is a heat transfer from low temperature objects to high temperature energy transfer device. It draws low-grade heat from the air, water, or soil of nature, working through electricity to provide high-grade heat energy that can be used by people. Heat pump technology has come out for hundreds of years, and the reason why it can get such a high attention rate stems from its three major characteristics: First, it can make long-term and large-scale use of rivers and lakes, urban sewage, industrial wastewater, soil or air Low temperature heat; Second, it can use a small amount of non-renewable energy will heat a lot of low-temperature heat; Third, it can be used under certain conditions, both heating, can also be used for refrigeration, without having to engage in two sets of equipment investment. In the market there are four types of heat pump products occupy the main market: 1, the air heat pump to air as a "source body", the air can heat pump, through the role of refrigerant energy transfer. The current products are mainly household heat pump air conditioners, commercial unit heat pump air conditioning units and heat pump hot and cold water units. Heat pump air conditioners have accounted for 40-50% of sales of home air conditioners, the annual output of 400 million units. Since the early 90s, heat pump water chiller units have been widely used in hot summer and cold winter regions. According to incomplete statistics, some cities in the region have accounted for 20-30% of the total heat and cold water using heat pump chillers. , And the scope of application continues to expand and there is a tendency to move toward this. 2, water source heat pump to groundwater as a hot and cold "source body" in the winter heat pump to absorb heat to the building heating, in the summer heat pump will absorb the heat to its emissions, to achieve cooling of buildings. Although air heat pump units have a very wide range of applications in our country, there is a problem that the heat pump heat quantity decreases and the frosting problem decreases with the outdoor air temperature. However, the water source heat pump overcomes the above shortcomings and has high operation reliability. In recent years, domestic applications have gradually expanded. 3, ground source heat pump Ground source heat pump is based on the earth as a heat source on the building air conditioning technology, heat pump in winter through the earth in the low heat to improve the building heating, while storing cold for summer use; summer heat pump to the building The heat inside the building is transferred to the ground to cool the building, while storing heat for winter use. Because of its energy saving, environmental protection, thermal stability and other characteristics, has attracted the attention of all countries in the world. Ground-source heat pumps in developed countries such as Europe and the United States have been in use for several decades. In particular, a large number of data and data on design, construction and operation have been accumulated in heating. 4, composite heat pump In order to make up for the limitations of a single heat source heat pump and make full use of low energy, the use of a variety of composite heat pump. Such as air-air heat pump unit, air-water heat pump unit, water-water heat pump unit, water-air heat pump unit, solar air source heat pump system, air heat pump, solar water source heat pump system, - Water source heat pump system. a, solar - air heat source heat pump system Sun - air heat source heat pump system is based on the traditional air heat pump system, the use of solar heat source and the newly developed system. It can be cooling, heating, hot water for living, is a use of natural energy, pollution-free, wide applicability and high efficiency of the new cold and heat source system. b, soil - water heat pump system Soil - water heat pump (hereinafter referred to as soil heat pump) can use low-grade soil heat to provide hot water or heating the building. Tens of thousands of such heat pump units are in operation in the Nordic countries such as the United States, Germany and Sweden. Soil heat pump technology has become more mature and rapidly promoted. Soil heat pump is currently being developed for the heating of the technical specifications. c, solar - water source heat pump air conditioning system Solar water source heat pump system consists of three parts, namely solar collector system, water source heat pump system and hot water supply system. The system is the fire water tank as a building water supply system. To solve the intermittency and instability of solar energy. When the loop water temperature is higher than 35 ℃, the water source heat pump air conditioning system is disconnected from the fire water tank, and the cooling tower is put into operation. When the loop water temperature is between 15-35 ℃, the solar energy stops working as a cooling tower and the domestic hot water supply Solar energy collected by the heat source is used to heat domestic water; when the loop water temperature is lower than 15 ℃, the loop is connected with the fire water tank, and the solar water source heat pump air-conditioning system absorbs the solar energy. If there is still excess solar energy, you can continue to heat domestic water. In addition to the above four types of heat pump, there are jet heat pump, absorption heat pump, working fluid concentration and capacity-adjusted heat pump and CO2 as working fluid heat pump system. For the current energy problems, heat pump energy-saving technology will undoubtedly become a good trend of development. At this time, the call for building energy efficiency started again. The government formulated the standard market for building energy efficiency and all local governments responded. This made the development of heat pump technology a good environment. It is believed that heat pump technology will become a leading energy saving in the near future technology.
