Research and application of small pressure ratio heat pump technology in antifreeze heating of Gaojialiang coal mine
In view of the current situation of anti-freezing heating in Gaojialiang coal mine,in order to achieve the goal of clean energy heating,a small pressure ratio heat pump technology based on photovoltaic solar thermal was proposed.The PVT heat pump uses solar energy to increase the evaporation temperature of the heat pump and improve the thermal performance of the system.The lower condensing temperature of the heat pump reduces the compression ratio of the heat pump compressor,further improving the energy efficiency ratio of the heat pump.The results show that the comprehensive coefficient of performance(COP)of the small pressure ratio heat pump reaches 5.29 during the actual operation of the project,which is significantly higher than the performance coefficient of the air source heat pump under the same working conditions,and the system heating can meet the needs of wellbore antifreeze heating.
renewable energysolar energysmall pressure ratio heat pumpsPVT heat pumpsheating system
国家科技期刊平台
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