Heat Pump Heating System Design and Operation

Jiangsu Oumailang Equipment Installation Engineering Co., Ltd. will introduce the design and operation of the heat pump heating system from five aspects: the heat pump of the heat pump heating system, the end equipment of the heat pump heating system, the temperature of the heat medium of the end equipment, the design of the terminal, and the operation of the terminal system.
Air source heat pump heating has obvious advantages in energy saving and environmental protection. Air source heat pump can not only be used as a decentralized heating source, but also as a central heating source.
For the end equipment of the heat pump heating system, there are three types that are used successfully. They are floor heating, radiators and fan coils. These three heating methods have different characteristics and should be selected according to the building function and the use characteristics. In the past, many thought that floor heating and air source heat pumps were the best match, but with the development of technology, radiators and fan coils also showed their own advantages.
The three end devices have different requirements for the temperature of the heat medium. The COP value of the heat pump is related to the output temperature. The higher the output temperature is, the lower the corresponding COP value is. For the floor heating system, it is considered that the best match with the air source heat pump is because It requires the heat medium temperature suitable for the heat pump operating characteristics. Radiator heating is considered to require a higher heat medium temperature. For the actual operation of northern heating, the heating parameters can be determined based on the heat source conditions. The research on low-temperature heating of the radiator shows that: 60°C/45°C is technically economically reasonable and feasible. The temperature of the hot water from the air source heat pump can be completely reduced to the supply temperature of domestic hot water.
The addition of heating facilities to existing buildings is best combined with the renovation of the rooms, as the addition of heating facilities has greatly changed the use of existing buildings, especially considering comfort and economy. Heating devices should be added to existing buildings. Attention should be paid to heat transfer between buildings. For additional floor heating, the structural load bearing and furniture shielding should be considered to affect heat dissipation. Heating of radiators should be taken into account. , and consider whether all rooms need heating.
At present, the use of air source heat pump heating in cold regions has basically reached consensus. Our national heating period is to enter the heating period when the average daily temperature is lower than or equal to 5°C. An ultra-low temperature air source heat pump should be used in severe cold areas. It can be used to provide heating load during the heating period and be coupled with other heat sources during the coldest period. Complementary operation. When arguing for a technical economic plan, consider the energy efficiency ratio of the entire heating period in your area.
Severe haze in winter in the north is basically at the beginning of heating. At this stage, the atmospheric pressure is low, which is not conducive to the diffusion of particles. At this stage, the air temperature is conducive to the operation of the air source heat pump. Therefore, the use of air source heat pump heating in stages in severe cold areas has practical significance for energy conservation and emission reduction, and for improving haze environment.
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