Modular Subway Heat Recovery System and Its Control Method

Abstract

The invention discloses a modular subway heat recovery system and a control method thereof, comprising a plurality of water / air heat pump units arranged in a tunnel, heat recovery water supply pipes and heat recovery return pipes arranged in a rail top air duct; each water The / air heat pump unit is connected to the heat recovery water supply pipe through the first pipeline, and a second valve is installed on each first pipeline; each water / air heat pump unit is also connected to the heat recovery water supply and return pipe through a second pipeline, A first valve that can be adjusted and shut-off is installed on each second pipe, a temperature sensor is installed below every two adjacent water / air heat pump units, and two water / air heat pumps located at both ends of the heat recovery return pipe A temperature sensor is also respectively arranged on the outside of the air heat pump unit. The invention can not only recover the heat in the piston air and the hot exhaust air, but also effectively recover the heat in the soil around the subway tunnel, and overcome the defect that the existing subway heat recovery system still cannot avoid the waste of a large amount of heat energy.

Description

Technical field [0001] The invention belongs to the technical field of subway heating, ventilation and air conditioning, and specifically relates to a modular subway heat recovery system and a control method thereof. Background technique [0002] In the existing subway system, a large amount of waste heat in the tunnel in winter is directly discharged to the outdoors through piston wind or exhaust hot air, which causes a large amount of energy waste. The recovery of waste heat in the tunnels of the subway system is a necessary means to avoid energy waste. The existing subway heat recovery system usually puts the heat recovery device in the subway exhaust shaft to recover the waste heat. However, this method can only recover the heat in the piston air or exhaust hot air, and cannot recover the soil around the subway tunnel. The heat in the medium still causes a lot of waste heat. Summary of the invention [0003] In view of the above-mentioned shortcomings or deficiencies of the ...

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Problems solved by technology

[0003] In view of the defects or deficiencies of the above-mentioned prior art and the problem of energy waste in the existing subway system, the purpose of the present invention is to provide a modularized subway heat recovery system and its control method. By setting the system of the present invention to control, Convert low-grade waste heat into high-grade heat energy that can be directly used, avoiding waste heat waste in subway tunnels

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