Multi-source coupling heat pump waste heat utilization system

Abstract

The invention discloses a multi-source coupling heat pump wast heat utilization system. The system is characterized in that a large amount of waste heat can be generated in production of coal mine enterprises, and the system mainly comprises a waste heat resource in mine return air, a waste heat resource in mine drainage, a gas station generating set waste heat resource, underground coal mine rockheat storage and the like. System performance coefficient influence factors comprise driving heat source temperature, circulating water outlet temperature, hot water return temperature and hot watersupply temperature. Available waste heat sources of mining areas are obtained, the heat supply processes of different heat sources are achieved, the multi-source coupling heat pump waste heat utilization system is obtained, and the mining area waste heat reutilization is achieved. By means of various influence factors, optimal work parameters of the multi-source coupling heat pump waste heat utilization system are obtained, the driving heat source temperature is 148 DEG C, the circulating water outlet temperature is 19.5 DEG C, the heat water return temperature is 45.5 DEG C, and the hot watersupply temperature is 56 DEG C. By building the multi-source coupling heat pump waste heat utilization system, an effective way of improving the economical efficiency and saving fuel is provided, andtechnical reference is provided for building the multi-source coupling absorption type heat pump waste heat utilization system for the mining areas and other industry.

Description

technical field [0001] The invention relates to a multi-source coupled heat pump waste heat utilization system, which belongs to the technical field of energy industry. Background technique [0002] Waste heat is the energy that is not used in energy utilization equipment under certain economic and technical conditions, that is, redundant and waste energy. Recovery and utilization of waste heat is an important way to improve economy and save fuel. Despite the rapid development of my country's energy industry, there is still a big gap with developed countries, and my country's energy structure is still dominated by fossil energy such as coal. The heat supply in large and medium-sized cities in my country is dominated by large coal-fired power units with combined heat and power, while in small and medium-sized cities it is distributed boiler rooms. Combined heat and power can increase coal utilization and reduce environmental pollution caused by coal combustion. Coal-fire...

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Problems solved by technology

The heat at the cooling tower is directly lost to the environment, and the energy loss is large

[0006] (3) At present, the absorption heat pump is used for centralized heat supply of cogeneration, and the return water temperature of the primary network is controlled below 20°C, which not only increases the return water temperature difference of the primary network, but also improves the transportation capacity of the pipe network; some will 6 ×30 MW absorption heat pump is used to recover the heat of circulating water, which can transfer to 1.44 million m 2 Heating for buildings in coal mines; coal mine heating boilers are dismantled, and water source heat pumps are used to recover waste heat from mine return air, mine drainage, Austrian ash water, etc., realizing coupling heat supply from multiple waste heat sources in mining areas, but its application is not yet widespread

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