Single well geothermal combined solar heating system

Abstract

A novel single-well geothermal and solar combined heating system comprises a single-well heat exchange system, a solar heat collection system, a heat pump system, heating consumers, a first water tank, a second water tank, a first circulation pump, a second circulation pump, a third circulation pump, a fourth circulation pump, a fifth circulation pump, a first valve, a second valve, a third valve,a fourth valve, a fifth valve and a sixth valve. The novel single-well geothermal and solar combined heating system has the advantages that the stability during solar heating is improved through thegeothermal heat accumulation capacity and variable load strain capacity, meanwhile, solar energy is stored underground in the non-heating season, and underground heat losses during winter heating is effectively compensated; in the non-heating season, through natural convection of water in a porous system, heat of injected water is effectively transmitted to the position away from a well wall, heatexchange of rocks outside a well is improved, and the single-well geothermal heat accumulation capacity is greatly improved; and in the heating season, through natural convection of water in the porous system, heat of the distant rocks is rapidly transmitted into the metallic well, and the single-well heat collection amount is increased.

Description

technical field [0001] The invention relates to the technical field of heating systems, in particular to a single-well geothermal combined solar heating system. Background technique [0002] The smog is serious in northern my country, especially in the winter heating season. The burning of coal for heating further aggravates the smog. At this stage, there is an urgent need for clean energy heating technology. Geothermal and solar energy, as clean and renewable energy sources, are getting more and more attention in northern heating. [0003] In many areas in the north, there is heating demand in winter, but no cooling demand in summer. The use of solar heating can play a role in winter, but in non-heating seasons, due to no demand or little demand, solar collectors are faced with the common phenomenon of stuffy tubes bursting. Moreover, due to the large fluctuation of solar energy, an auxiliary heat source or a large heat storage system needs to be configured for heating in...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to combine solar energy with deeper single-well geothermal energy, combine solar energy and geothermal energy for heating in winter, and solve the instability of solar energy heating alone; store solar energy underground in non-heating seasons, which not only supplements winter heating. The loss of underground heat energy also solves the problem of pipe burst caused by the sun

Images