High-efficiency clean energy source heat supplying system using heat energy of hot dry rocks

Abstract

The invention discloses a high-efficiency clean energy source heat supplying system using heat energy of hot dry rocks. The high-efficiency clean energy source heat supplying system comprises a plurality of tubular metal heat exchangers which are positioned in a hot dry rock layer and are filled with heat media, wherein a heat medium outlet of each tubular metal heat exchanger is connected with a heat medium circulating pump through a pipeline; the heat medium circulating pump is connected with a heat medium inlet of a ground heat exchanger through a pipeline; a heat medium outlet of the ground heat exchanger is connected with a heat medium inlet of each tubular metal heat exchanger through a pipeline; the high-efficiency clean energy source heat supplying system also comprises a user end; a water outlet of the user end is connected with a water circulating pump through a pipeline; the water circulating pump is connected with a water inlet of the ground heat exchanger through a pipeline; and a water outlet of the ground heat exchanger is connected with a water inlet of the user end through a pipeline. The invention provides the high-efficiency clean energy source heat supplying system using the heat energy of the hot dry rocks; clean energy sources are effectively utilized, and underground water is prevented from being polluted; no pollutants in the development process are discharged; and the high-efficiency clean energy source heat supplying system is low in operation expenses and is wide in application range.

Description

Technical field: [0001] The invention relates to a high-efficiency clean energy heating system utilizing dry hot rock heat energy. Background technique: [0002] my country is rich in geothermal resources, which can be divided into shallow geothermal energy resources and medium-deep hot dry rock geothermal resources. [0003] Shallow geothermal energy resources are generally from a constant temperature zone to a buried depth of 200m, and the temperature is generally lower than 25°C. At present, ground source heat pumps (also known as soil source heat pumps) and water source heat pumps are mainly used for building heating, bathing, breeding, etc. . Among them, ground source heat pumps have problems such as unstable heat sources and large floor area of ​​buried pipes; water source heat pumps have been banned in most areas of my country due to damage to groundwater resources. [0004] Hot dry rock is a high-temperature rock mass buried 1,000 to 10,000 meters below the ground,...

AI Technical Summary

Problems solved by technology

At present, my country's hot dry rock thermal energy utilization technology is in the development and testing stage. The main research direction is to use it for power generation. There are very few cases that are used for heating, and there is also the problem of high operating costs.

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