Geothermal heating system and method

Abstract

The invention discloses a geothermal heating system and method. The geothermal heating system comprises equipment of a heat pipe, a vapor compressor, a heat exchanger and the like, through a heat pipestructure deeply buried in the ground by 50 m or below, under a required pressure environment, working medium liquid water in the heat pipe is evaporated by absorbing deep geothermal energy, obtainedwater vapor enters a vapor compressor to be heated and pressurized, and then releases latent heat through the heat exchanger to be condensed, thus the purpose of supplying the heat to a user side isrealized, and then saturated liquid water generated through condensation is returned into the heat pipe to be recycled. The geothermal heating system and method recycle free geothermal resources to the greatest extent, has the advantages of being less in vapor loss, high in heat-exchanging efficiency, good in heating performance, low in operating cost, simple in operation process and the like, andis suitable for the fields of life, industrial heat supply, refrigeration and the like.

Description

technical field [0001] The invention relates to a geothermal heating system and method, and belongs to the technical field of energy saving. Background technique [0002] The climate in northern my country is very cold in winter, and heating is the basic living demand of residents, and the energy consumption of heating accounts for a relatively high proportion of the energy consumption of the entire building. At present, my country's heating methods tend to be diversified, which can be divided into two types, one uses electricity as the main heat source, including various direct electric heating methods; the other uses coal and gas as the main heat source, including large-scale Boiler central heating, local heating of small modular single buildings, etc. However, there are common problems such as high energy consumption, poor indoor thermal comfort and serious environmental pollution. Therefore, the heating mode of buildings in our country needs to be changed urgently. Geo...

AI Technical Summary

Problems solved by technology

[0004] At present, although ground source heat pump technology has been gradually applied in my country, due to the limitation of its own characteristics, related problems have gradually become prominent.

First of all, the overall structure is complex, the volume is large, and the length of the conventional heat pipe is too long. The steam produced in the evaporation section will encounter low-temperature condensed water during the rising process, resulting in a decrease in the temperature of the steam or direct condensation of part of the steam. The loss is relatively large; secondly, the evaporation and condensation heat exchangers of the heat pump system need sufficient heat transfer temperature difference, and the heat transfer efficiency is not high, thereby reducing the heating performance of the heat pump system, and the heating coefficient (COP) is low

Images