Subway water pipe refrigerant-hot water secondary heat exchanging type heat preservation and antifreeze system

Abstract

Disclosed is a subway water pipe refrigerant-hot water secondary heat exchanging type heat preservation and antifreeze system. A refrigerant output pipeline of a subway station air conditioning systemheat exchanger is connected with the input end of a refrigerant heat exchanger. A refrigerant input pipeline of the subway station air conditioning system heat exchanger is connected with the outputend of the refrigerant heat exchanger. A heat exchanging and output water supply pipe of the refrigerant heat exchanger is connected with the water supply end of a heat exchanger of a subway water supply-drainage pipe or a fire hose. A heat exchanging and input backwater pipe of the refrigerant heat exchanger is connected with the backwater end of the heat exchanger. The heat exchanging and outputwater supply pipe of the refrigerant heat exchanger is provided with a first valve. The heat exchanging and input backwater pipe of the refrigerant heat exchanger is provided with a second valve. According to the subway water pipe refrigerant-hot water secondary heat exchanging type heat preservation and antifreeze system, the characteristic that heating is not needed in the subway underground station in winter is skillfully utilized, an evaporative condensing air conditioning system in the subway station is used for heating water in winter for providing hot-water tracing and heat preservation and antifreeze for the subway water supply-drainage pipe and the fire hose, the use efficiency of the subway air-conditioning system is improved, the heat preservation effect is good, and the energysaving effect is remarkable.

Description

technical field [0001] The invention relates to the field of subway water supply and drainage pipes and fire-fighting water pipes hot water heat preservation and antifreeze technology, and is a secondary heat exchange system for subway station air-conditioning systems to heat preservation and antifreeze for subway water supply and drainage pipes and fire-fighting water pipes. Background technique [0002] At present, the water supply and drainage pipes and fire-fighting water pipes installed in the subways of northern cities in my country are generally used to wrap the electric insulation system outside the water pipes, and then wrap the outside of the electric insulation system The thermal insulation and antifreeze method of the thermal insulation layer. This insulation method using electric insulation has many problems such as high initial investment, difficult construction and installation, high energy consumption in operation, and difficult maintenance. In view of the ab...

AI Technical Summary

Problems solved by technology

This insulation method using electric insulation has many problems such as high initial investment, difficulty in construction and installation, high energy consumption in operation, and difficult maintenance.

Images