Natural gas cold and heat co-production system

Abstract

The invention discloses a natural gas cold and heat co-production system. The system comprises a heat engine, a transfer unit, a cooling unit and a hot water system unit; the transfer unit is respectively connected with an output shaft of the heat engine and the input end of the cooling unit; the heat engine is connected with the input end of the hot water system unit; the transfer unit transfers mechanical energy output by the heat engine to the cooling unit for refrigeration of the cooling unit; and flue gas generated by the heat engine is transmitted to the hot water system unit for heating of the hot water system unit. According to the invention, when mechanical energy generated by the heat engine is supplied to the cooling unit for refrigeration by means of the transfer unit, flue gas heat generated by the heat engine is supplied to the hot water system unit for heating so as to achieve the effect of heating external cold water by the hot water system unit while refrigerating the external cold water; cold and heat co-production is implemented; the utilization rate of the heat energy is sufficiently improved; meanwhile, energy can be distributed to an air conditioner refrigeration and hot water system so as to simultaneously meet the requirements of people for domestic hot water and air conditioner refrigeration.

Description

technical field [0001] The invention relates to the technical field of natural gas, in particular to a natural gas cooling and heating cogeneration system. Background technique [0002] Existing heat engines are usually widely used in air-conditioning and refrigeration, but less in the use of hot water systems. However, the temperature in winter is colder, and the load of the hot water system required indoors is relatively large, but the demand for air-conditioning and refrigeration is not high. And because a large amount of internal energy will be lost in the form of heat when the heat engine is doing work, resulting in low utilization efficiency of the heat engine, how to improve the utilization rate of the heat engine and better distribute the energy generated by the heat engine to air conditioning and cooling and hot water It has become a problem that we need to solve to meet the needs of people's domestic hot water throughout the year and the cooling load of air conditi...

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Problems solved by technology

[0002] Existing heat engines are usually widely used in air-conditioning and refrigeration, but less in the use of hot water systems. However, the temperature in winter is colder, and the load of the hot water system required indoors is relatively large, but the demand for air-conditioning and refrigeration is not high. And because a large amount of internal energy will be lost in the form of heat when the heat engine is doing work, resulting in low utilization efficiency of the heat engine, how to improve the utilization rate of the heat engine and better distribute the energy generated by the heat engine to air conditioning and cooling and hot water System to simultaneously meet people's year-round domestic hot water and summer air-conditioning cooling load demand, has become a problem we need to solve

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