Waste heat and residual pressure recovery heat pump system for industrial circulating cooling water

Abstract

The invention provides a waste heat and residual pressure recovery heat pump system for industrial circulating cooling water. The system comprises an industrial water circulating unit, a heat pump working medium circulating unit, a heating unit and a water turbine. The industrial water circulating unit comprises a circulating water pool, a hot water circulating pipe, a heat exchanging unit and a cold water circulating pipe. The heat pump working medium circulating unit comprises an evaporator, a compressor and a condenser, wherein the evaporator, the compressor and the condenser are sequentially connected through a pipeline to form circulation. The heating unit comprises a cooler. The water turbine is arranged on the hot water circulating pipe and coaxially connected with the compressor. Residual pressure is recovered through the water turbine to drive the compressor to operate without providing power energy for the compressor, and it is also unnecessary to convert the residual pressure into electric energy through a generator and then drive the compressor to work; the recovery system recycles waste heat and the residual pressure at the same time and has the advantages of being simple in structure, stable in working and high in economic cost performance.

Description

technical field [0001] The invention relates to the technical field of recovery of waste heat and pressure, in particular to a heat pump system for recovering waste heat and pressure of industrial circulating cooling water. Background technique [0002] At present, in the face of the tense situation of the world's energy situation, domestic and foreign countries have been researching alternative new energy sources, and at the same time, energy recovery and utilization are also carried out in the process of energy conservation and emission reduction. In 2012, the State Council officially issued the "Twelfth Five-Year Plan for Energy Conservation and Emission Reduction", which specifically clarified key projects for energy conservation and emission reduction during the "Twelfth Five-Year Plan" period, and the utilization of residual pressure and waste heat was highlighted in energy-saving renovation projects. [0003] There is a large amount of waste heat and waste pressure in...

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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems in the prior art of recovering waste heat and pressure of industrial circulating cooling water, the investment cost of energy-saving transformation is high and the structure of the recovery system is complex, the present invention provides a heat pump system for recovering waste heat and pressure of industrial circulating cooling water, which uses a water turbine to recover waste pressure, and the water turbine directly drives the waste heat recovery compressor to run, which has the advantages of high energy recovery efficiency, simple structure, stable operation and high cost performance

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