Working principle of heat pump heating

The working principle of heat pump heating is mainly based on the principle of inverse Carnot cycle, through the use of a small amount of electric energy to drive the unit, through the heat pump system in the working medium for phase cycle, low-grade heat energy absorption, compression, warming and then use. The main components of the heat pump include refrigerant, compressor, condenser, expansion valve, evaporator, etc. Through the control of multiple valves and pumps, it is able to carry heat from a low temperature to a high temperature, with two working conditions of cooling and heating. A heat pump system operates through a closed loop circuit, in which a medium called refrigerant or refrigerant, in the process of compression and expansion, the refrigerant ‘extracts’ heat from a low temperature environment and transfers it to a high temperature environment. By reversing the cycle, this type of equipment can be used for both heating and cooling.

In the specific application of heat pump heating, the heat pump unit takes the outdoor air as the heat source (or heat sink), and through the work of the heat pump unit, the heat energy from the low-temperature heat source is transferred to the indoor area to achieve indoor heating. This technology makes use of the low-level heat energy widely found in nature, such as the heat in air, river water, seawater, urban sewage, surface water, groundwater, etc. Through the technical means of heat pump, these low-level heat energy is converted into high-level heat energy, so as to achieve the purpose of heating indoor air. This technology is not only energy-saving and environmentally friendly, but also has a high energy-efficiency ratio and low operating costs, with significant environmental and social benefits, and is one of the most important technologies to promote energy conservation and emission reduction, and help the global ‘carbon peak, carbon neutral’ process.