Geothermal-based central heating system using thermal-increasing heat supply machine unit and method thereof

Abstract

The invention relates to a geothermal-based central heating method using a thermal-increasing heat supply machine unit, belonging to the field of heat supply engineering. The method adopts the soil source or water source thermal-increasing heat supply machine unit to replace a heat exchanger used in the conventional central heating method, uses high temperature hot water supplied by a primary heat supply network as the driving heat source of the thermal-increasing heat supply machine unit, extracts heat from low grade heat source such as thin layer soil or water source, and supplies heat to the user by heating a secondary heat supply network by using the driving heat source and the low grade heat source. The heating method mainly comprises a centralized heat source (which is generally a cogeneration unit, fire coal, a gas heating boiler or the like), the primary heat supply network, the thermal-increasing heat supply machine unit, the secondary heat supply network, an underground embedded pipe, a water source taking well, a recharge well, a heat dissipation end arranged at the side of the user, and accessories connected with the heat dissipation end. Compared with the conventionalcentral heating method, the method expands the forms of the heat sources of a central heating system, thus improving the heating capability of the system and reducing the heating cost.

Description

technical field [0001] The invention proposes a geothermal centralized heating mode utilizing a heat-increasing heating unit, which belongs to the field of heating engineering. [0002] Compared with the conventional central heating method, this method uses the heat-increasing heating unit to replace the heat exchange station in the conventional central heating method, and uses the high-temperature hot water provided by the primary heating network as the driving heat source of the heating-increasing heating unit, making full use of the primary The working ability of network high-temperature hot water drives the heat-increasing heating unit to extract heat from low-grade geothermal or hot water resources without increasing other energy consumption. Compared with the conventional central heating method, this method expands the heat source form of the central heating system, increases the heating capacity of the system, and reduces the heating cost. Background technique [000...

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Problems solved by technology

If the heat extracted from the ground by the electric heat pump system in winter and discharged to the ground in summer cannot achieve a balance between winter and summer, the performance of the unit will decrease as the operating time increases

Under the same heating and air-conditioning area, the heat pump units of soil source and water source usually discharge into the ground in summer more than the heat taken out from the ground in winter. Disequilibrium of heat and heat exhausted to the ground in summer

This is not only not conducive to the operation of the unit, but also easily destroys the heat balance of the shallow soil source

[0005] Under the premise of producing the same amount of heat, the electric heat pump heating method needs to consume a large amount of electric energy as a driving source, which affects the economical application of the system in areas with high electricity prices

Electric heat pumps mostly use decentralized heating methods. If they are integrated with traditional central heating resources, they will consume more electricity in the hot water transmission and distribution system, further reducing the economy of the system.

However, the high-temperature hot water provided by the primary network in the traditional central heating system still has a certain working ability, and it can be used as a driving heat source to extract part of the heat from low-grade heat sources. If the high-temperature hot water adopts the heat exchanger heat exchange method, Then the working ability of high temperature hot water is wasted

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