Plastic heat exchanger can be applied to sewage source heat pump energy saving system

Sewage source heat pump is an efficient environmental protection and energy saving system. The speciality of sewage water quality makes the selection of heat exchanger equipment and the corrosion and scaling of water quality equipment in heat exchangers become the obstacles to the promotion. According to the existing problems of the heat exchanger system of the sewage source heat pump system, combined with the characteristics of the plastic heat exchanger, a plastic heat exchanger is proposed instead of the metal heat exchanger. Compared with metal heat exchangers in terms of corrosion, scaling and price of plastic heat exchangers, it has obvious advantages. The analysis of the resistance, strength and heat transfer performance of the plastic heat exchanger proves that the application of the plastic heat exchanger in the sewage source heat pump is feasible.

Heat pump is widely used as an environmentally-friendly and energy-saving heating and cooling device. The raw water as a heat source/heat sink of a heat pump system has some advantages that are unmatched by other types of heat sources/heat sinks:

1) Can be obtained in large quantities. The amount of primary sewage generated is large, and the annual flow is almost constant.

2) Warm in winter and cool in summer. Winter sewage temperature is higher than ambient temperature, and summer is generally lower than ambient temperature. For example, the long-term measurement data of Beijing Gaobeidian Wastewater Treatment Plant shows that the sewage water temperature is 13.5~16.5°C, which is higher than the temperature above 20°C; the summer sewage water temperature is 22~25°C, and it is lower than the temperature above 10°C.

3) Contains a lot of heat. About 40% of the waste heat generated in the urban area is in the sewage. Therefore, the sewage source is the ideal heat source/heat sink for the heat pump. However, the application of the sewage to the heat pump system due to its complicated water quality will bring severe problems to the long-term stable operation of the heat exchange device. test.

Bed Elevator

Elevator,Bed Elevator,Hospital Elevator

Hosting Elevator Co., Ltd. ,

Posted on