System applying medium of low boiling point into low and medium-temperature geothermal well for obtaining heat

Abstract

The invention discloses a system applying medium of a low boiling point into a low and medium-temperature geothermal well for obtaining heat, which comprises an underground heat exchanger, a steam collector, a steam utilization device, a compressor, a storage tank for the medium of the low boiling point and a medium pump, wherein the liquid medium inlet of the underground heat exchanger is connected with the outlet of the medium pump; the steam outlet of the underground heat exchanger is connected with the inlet of the steam collector; the outlet of the steam collector is connected with the inlet of the steam utilization device; the outlet of the steam utilization device is connected with the gaseous medium inlet of the compressor; the outlet of the liquid medium of the compressor is connected with the inlet of the storage tank for the medium of the low boiling point; and the outlet of the storage tank for the medium of the low boiling point is connected with the inlet of the medium pump. In the system, the heat of underground hot water is utilized to change the liquid medium in the underground heat exchanger into high-temperature steam, and the high-temperature steam becomes the energy of various pieces of equipment. The system has the advantages of simple process, low energy consumption and no pollution, and is a powerful supplement for the traditional energy.

Description

technical field [0001] The invention relates to a device for extracting heat from a geothermal well, in particular to a system for using a medium with a low boiling point to extract heat from a medium-low temperature geothermal well. [0002] Background technique [0003] With the rapid consumption of non-renewable resources such as oil and natural gas, the development and utilization of new energy, especially renewable energy, has attracted more and more attention. Renewable energy includes solar energy, hydro energy, biomass energy, wind energy, ocean energy, and geothermal energy. Geothermal resources exist underground and are clean mineral resources. The potential value of geothermal energy is very considerable. The heat kept outward from the center of the earth is equivalent to 44 trillion watts per year. Even if only a small part of this heat is developed and utilized, it can easily meet most of the world's energy requirements. According to the temperature, geother...

AI Technical Summary

Problems solved by technology

However, there is a problem in the exploitation and utilization of medium and low temperature geothermal resources, that is, medium and low temperature geothermal wells cannot directly form steam to bring geothermal energy out.

[0004] Traditional geothermal exploitation and utilization generally adopt methods such as flash steaming and pressurization. However, flash steaming equipment is large in size, easy to corrode and low in efficiency, so it cannot be widely used

Therefore, at present, there is no geothermal mining device suitable for widespread promotion, which seriously restricts the development of the field of geothermal mining.

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