Distributed energy resource comprehensive utilization system and method used for natural gas station

Abstract

The invention discloses a distributed energy resource comprehensive utilization system and method used for a natural gas station. The system comprises a natural gas compressor set, a heat exchanger, a water processor, a hot water storage tank, a secondary heat exchanger, a water feeding cooling device, a circulating water pump, a connecting pipeline, an adjusting valve and other main devices. A large amount of heat energy can be generated in the compressing process, fed water of the heat exchanger is processed to be soft water through the water processor, after temperature raising, the water enters the hot water storage tank, and heat exchanging is performed on the soft water and return water, used for heat supplying, of the secondary heat exchanger for the heat supplying. The redundant part further can drive a water boiling device to provide living drinking boiling water or living hot water through the secondary heat exchanger, the compressor cooling water after secondary heat exchanging enters the water feeding cooling device again so that the water can be cooled to a normal temperature, and water feeding conditions of cooling water is achieved. The system uses indirect cooling heat energy for heating the cold water in the compressing process, the secondary heat exchanging is performed on the water with raised temperature, so that comprehensive utilization of the energy is achieved, the energy utilization rate of the system is improved, and energy cost is reduced.

Description

technical field [0001] The invention relates to the field of energy conservation and comprehensive utilization, in particular to a system and method for comprehensive utilization of waste heat distributed energy used in natural gas filling stations. Background technique [0002] my country's energy is growing rapidly, the contradiction between supply and demand is prominent, and environmental problems are becoming more and more serious. Energy conservation and emission reduction are of great significance to the sustainable development of the economy and society. Compressors are important energy-consuming equipment in the national economy. According to statistics, the energy consumption of compressors in the country accounts for 10% of the total power consumption. The compression process generates a lot of heat energy. In order to save compression power consumption and meet the requirements of the compressor for the temperature of the working medium, The prior art generally a...

AI Technical Summary

Problems solved by technology

Most of the compression heat is taken away by the cooling water. Due to the design limitation of the heat exchanger, the cooling water volume is generally large, and the outlet water temperature is low. The cooling water is directly discharged or recycled after simple cooling through the air cooling tower, resulting in a large amount of waste of heat energy.

Because the heat grade of this part of cooling water is very low, it is difficult to use

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