Capillary tube wall face heat exchanger applied in subway tunnel

Abstract

The invention discloses a capillary tube heat pump system applied in a subway tunnel. The capillary tube heat pump system comprises a capillary network front end heat exchange system, a water source heat pump system and a user terminal system. A capillary network heat exchange system is adopted by a heat recycling system of the capillary tube heat pump system, and heating in winter and refrigeration in summer are achieved by changing the direction of a four-way valve of a heat pump unit. According to the capillary tube heat pump system, the defects that due to the fact that a cooling tower is arranged, noise is generated, and bacteria are bred; water body thermal pollution is caused by a ground surface water source heat pump; the occupied area of a ground source heat pump heat exchange coil is large; the civil engineering cost is increased due to laying and mounting of buried pipes; the soil thermal conductivity coefficient is low; and the heat exchange amount is small are overcome. The capillary tube heat pump system has the advantages that the occupied area is small, the construction cost is low, the heat exchange efficiency is high, environmental friendliness, economical efficiency and high efficiency are achieved, cold supply can be conducted on stations of the underground tunnel in summer, and heat supply can be conducted on above-ground buildings in winter.

Description

technical field [0001] The invention relates to a capillary heat exchange system, in particular to a capillary heat exchange system using the heat recovery of a subway tunnel. Background technique [0002] The number and scale of my country's soil source heat pump systems have been increasing in recent years, and there are already several hundreds of thousands of square meters of soil source heat pump projects under construction across the country. Unlike European and American soil source heat pumps, which mainly arrange horizontal buried pipe soil heat exchangers, and use small heat pump units to undertake the air conditioning of small residential buildings such as villas, the main service targets of my country's soil source heat pump systems are large-scale multi-storey residences and offices. For buildings, soil heat exchangers generally use vertical single-U or double-U-shaped soil heat exchangers densely arranged in a certain area, or use engineering piles or pouring pil...

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Problems solved by technology

The widespread use of dense vertical buried pipe groups and the increasing scale of ground source heat pumps have caused more and more concerns about the soil heat balance within the buried pipe range of soil heat exchangers.

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