Double-source subway source heat pump system, construction method and control method

Abstract

The invention discloses a double-source subway source heat pump system, a construction method and a control method. The double-source subway source heat pump system comprises an air side heat exchanger, a soil side heat exchanger, a water segregator, a water collector, a heat storage water tank and a heat pump system; the heat storage water tank is connected with the heat pump system in parallel; an outlet of the heat storage water tank and an outlet of the heat pump system are connected with a pump through pipelines, the pump is connected with a water segregator, the water segregator is connected with a water supply main pipe, and the water supply main pipe is connected with water supply main pipes of the air side heat exchanger and the soil side heat exchanger through a first three-way valve; backwater main pipes of the air side heat exchanger and the soil side heat exchanger are respectively connected with a backwater main pipe through a second three-way valve; a water return main pipe is connected with an inlet of the water collector, and an outlet of the water collector is connected with the heat storage water tank and an inlet of the heat pump system.

Description

technical field [0001] The invention relates to the field of energy utilization, in particular to a dual-source subway source heat pump system, a construction method and a control method. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] During the operation of the subway, a large amount of heat will be generated. Only a small part of this heat is stored in the surrounding rock, and most of it is exhausted to the ground by the piston wind and the tunnel exhaust fan through the air, which not only wastes low-grade heat energy, but also wastes high-grade heat. Grade electrical energy. In recent years, some projects have laid heat exchange tubes in the continuous wall or tunnel lining of the underground space as the front-end heat exchanger of the ground source heat pump, so that the low-grade heat energy stored in the surrounding rock of the subway ca...

AI Technical Summary

Problems solved by technology

[0003] During the operation of the subway, a large amount of heat will be generated. Only a small part of the heat is stored in the surrounding rock, and most of it is exhausted to the ground by the piston wind and the tunnel exhaust fan through the air, which not only wastes low-grade heat energy, but also wastes high-grade heat. grade of electricity

In recent years, some projects have laid heat exchange tubes in the continuous wall or tunnel lining of the underground space as the front-end heat exchanger of the ground source heat pump, so that the low-grade heat energy stored in the surrounding rock of the subway can be converted into higher-grade heat energy for utilization , and has a certain positive effect on the thermal environment of subway tunnels and soil thermal pollution control, but still cannot utilize the low-grade heat energy in most subway tunnels

Moreover, the ventilation efficiency of the existing piston air shaft is low, and with the increase of the depth of the subway construction, the efficiency is even close to 0, which requires the fan to consume more power to dissipate the heat of the subway tunnel

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