Waste heat power generation type screw machine set

Abstract

A waste heat power generation type screw machine set is characterized by comprising a refrigerating circulating system and a double-screw expansion machine system. A power output shaft of the double-screw expansion machine system is connected with a power generation system, and a condensing coil of the refrigerating circulating system is placed in a generator of the double-screw expansion machine system. The waste heat power generation type screw machine set is reasonable in design and capable of effectively utilizing low grade heat energy emitted by buildings. The double-screw expansion machine system is used for achieving power generation utilization of waste heat energy resources, the energy consumption of the refrigerating circulating system can be reduced, the waste heat resources emitted to an external environment can be reduced, the temperature of an outdoor environment and the using cost of the refrigerating circulating system can be lowered, and emission of carbon dioxide can be reduced.

Description

technical field [0001] The invention belongs to a waste heat recycling device of a ground source heat pump, and in particular relates to a waste heat power generation type screw unit for generating electricity by using low-grade waste heat generated by buildings. Background technique [0002] In the prior art, the refrigeration system mainly uses electric power as the energy source, which can be divided into centrifugal air-conditioning units, air-cooled air-conditioning units, piston-type air-conditioning units, screw-type air-conditioning units and other compression air-conditioning units; Energy, which can be divided into lithium bromide absorption air-conditioning units, ammonia-water absorption air-conditioning units, etc. according to different types of working medium. Compression refrigeration units using electricity as energy have a higher energy efficiency ratio than absorption air conditioning units, but consume high-grade electric energy; absorption air conditioni...

AI Technical Summary

Problems solved by technology

The use of the above-mentioned central air-conditioning in various buildings will have the following defects, such as the shortage of power supply in summer; the local air temperature in the city rises sharply, resulting in the heat island effect;

At the same time, the above-mentioned refrigeration and air-conditioning also consume a large amount of energy, which directly or indirectly increases the emission of CO2

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