Application and Development Trend of Four Different Heat Pump Types

Heat pump technology in the 20th century after the 70's, after technical improvement, favored by people, re-boarded the stage of history, Ji Tong Bao pump network reporter believes that its main reason is its superior recovery of low-temperature waste heat, energy saving features. With the development of heat pump technology, the market segmentation has gradually become obvious, and the application and development of different heat pumps are also the same in each department. . .

According to the different energy sources used by the heat pump, the heat pump can be classified as follows:

First, the ground source heat pump ground source heat pump uses the earth as the heat source to air-condition the building. In the winter, the heat energy in the earth is raised by the heat pump to the building to heat, and at the same time, the cold is stored for summer use. In the summer, the heat pump is used to build the building. The heat inside the object is transferred to the underground to cool the building while storing heat for winter use. Due to its characteristics of energy saving, environmental protection, and thermal stability, it has attracted the attention of countries in the world. The use of ground-source heat pumps in developed countries such as Europe and the United States has a history of several decades. In particular, there have been a lot of data and data on design, construction, and operation in heat supply.

Second, the air source heat pump takes air as the "source", and the air source heat pump transfers the energy through the action of the refrigerant. The current products are mainly household heat pump air conditioners, commercial unit heat pump air conditioning units and heat pump chillers. Heat pump air conditioners have accounted for 40-50% of the sales of home air conditioners, and the annual output is more than 4 million units. The heat pump chiller/heater unit has been widely used in hot summer and cold winter areas since the early 1990s. According to incomplete statistics, the use of heat pump chillers and heat exchangers in some cities in the region has accounted for 20–30% of the total. , and the scope of application continues to expand and there is a tendency to move toward this.

Third, the 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, using 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 recovery heat pump, solar-water source heat pump system, thermoelectric water triple heat pump, soil - Water source heat pump system.

Fourth, the water source heat pump uses groundwater as a source of heat and cold. In the winter, it uses heat pumps to absorb heat and heat the building. In summer, the heat pump discharges heat absorbed by the heat pump to cool the building. Although the current air-energy heat pump unit has a wide range of applications in China, there is a problem that the heat pump heat supply decreases with the decrease of the outdoor air temperature, and the frost problem is solved. The water source heat pump overcomes the above deficiencies and has high operating reliability. In recent years, domestic applications have gradually expanded.