Automatic waste heat defrosting system for gas heat pump

Abstract

The invention discloses an automatic waste heat defrosting system for a gas heat pump. The defrosting system comprises a gas engine, a cylinder sleeve waste heat recoverer, a compressor, a gas-liquidseparator, an oil separator, an evaporator, an air heat exchanger, a layered heat collecting water tank, a cylinder sleeve cooling water circulating pump, a first four-way valve and a second four-wayvalve; the cylinder sleeve waste heat recoverer is connected with the cylinder sleeve cooling water circulating pump and the layered heat collecting water tank through pipelines; a smoke outlet of thegas engine is connected with an engine tail gas heat exchange inlet of the layered heat collecting water tank through a pipeline; an outlet of the compressor is connected with inlets of the oil separator, an expansion valve and the evaporator in sequence through pipelines; and an outlet of the gas-liquid separator is connected with an inlet of the compressor through a pipeline. The automatic waste heat defrosting system has the advantages of being simple in structure and easy to control; in a defrosting process, the indoor heat supply process is not interrupted, waste of waste heat is small so that the waste heat of the engine cylinder sleeve and the waste heat of waste gas can be efficiently utilized, and stable domestic hot water is provided; and needed time of the defrosting process isshort, and defrosting efficiency is high.

Description

technical field [0001] The invention relates to the technical field of manufacturing a gas heat pump, in particular to an automatic defrosting system for waste heat of a gas heat pump. Background technique [0002] The heat pump air-conditioning system has the characteristics of high efficiency and energy saving in winter heating conditions. With the aggravation of the dual pressure of energy and environment, the application of this technology has attracted more and more attention. Among them, the gas heat pump air conditioning system is an important distributed energy system that uses natural gas as fuel and directly drives the compressor in the heat pump air conditioning unit to work through the engine. The gas heat pump air-conditioning system can well meet people's needs for air-conditioning applications, and has good energy-saving and environmental protection characteristics. In recent years, as the proportion of natural gas energy utilization continues to increase, my...

AI Technical Summary

Problems solved by technology

However, the existing gas-fired heat pump waste heat defrosting device has defects such as serious waste heat waste during operation, complicated control, and too much investment in equipment.

Images