Deep well heat exchange heat pump system for absorbing heat through phase change of working medium

Abstract

The invention relates to a deep well heat exchange heat pump system for absorbing heat through a phase change of a working medium. The pump comprises a buried pipe, an inner pipe assembly and an outer pipe are arranged in the buried pipe, the inner pipe assembly comprises an inner pipe pipeline, an inner pipe is fixedly installed in the inner pipe pipeline, a cavity pipeline is arranged between the inner pipe and the outer pipe, a rock layer is arranged outside the buried pipe, a backfilling layer is arranged between the rock layer and the buried pipe, a compressor is fixedly connected to the top of the inner pipe pipeline, an expansion valve is fixedly connected to the right side of the buried pipe, and the expansion valve is fixedly connected with the compressor through a condenser. According to the deep well heat exchange heat pump system capable of absorbing heat through phase change of the working medium, the R134a circulating working medium is arranged in a cavity, according to the characteristic that the evaporation temperature of R134a is low, heat absorbed by latent heat of vaporization of the R134a circulating working medium can be utilized, the heat absorption capacity of the circulating working medium can be improved, and the efficiency of the heat pump system can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of utilization of geothermal resources, in particular to a deep well heat exchange heat pump system utilizing phase change of working fluid to absorb heat. Background technique [0002] With energy consumption, traditional energy reserves continue to decline. In order to help achieve the strategic goals of carbon peaking and carbon neutrality, it is imperative to develop and use clean energy. Geothermal energy is a clean and environmentally friendly renewable energy. The competitiveness of the field is getting stronger and stronger. At present, geothermal energy can be divided into two forms of hydrothermal geothermal (water source) and dry hot rock (ground source) in terms of utilization forms. Among them, the hot dry rock mining technology adopts a closed circulation system. It is one of the key research directions for the development and utilization of geothermal resources to make full use of mid-deep geo...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a deep well heat exchange heat pump system utilizing the phase change of working fluid to absorb heat, which has the advantage of good heat exchange effect and solves the problem of single structure and poor Problems such as low heat exchange power, problems that cannot achieve the expected effect

Images