Study on Multi-Energy Complementary Energy Ratio Scheme of Geothermal-Air Hybrid Energy System in Greenhouses
Under the"Carbon Peaking and Carbon Neutrality"goals,using renewable energy to solve the cooling and heating of greenhou-ses and building a safe,green,smart,and efficient energy system has become the development trend of greenhouses.In recent years,the application of medium-deep geothermal energy,shallow geothermal energy,and air energy in greenhouse heating has developed rapidly.Taking an agricultural industrial park in Fugou County,Zhoukou City,Henan Province as an example,combined with the regional geo-thermal resources,four renewable energy proportioning plans are proposed:medium-deep geothermal + ground source heat pump + water source heat pump,medium-deep geothermal + ground source heat pump + air source heat pump,ground source heat pump +air source heat pump and ground source heat pump + water source heat pump.The results show that the investment of ground source heat pump + water source heat pump is the highest.The operating cost of ground source heat pump is 2.01 times that of mid-deep geothermal.The op-erating cost of air source heat pump is 1.95 times that of water source heat pump.The operating cost of ground source heat pump is simi-lar to that of water source heat pump.The priority order of energy utilization is medium and deep geothermal energy>ground source heat pump>water source heat pump>air source heat pump.The optimal hybrid energy scheme is the medium and deep geothermal + ground source heat pump + water source heat pump.
greenhousemulti-energy complementationmedium and deep geothermalground source heat pumpair energy
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