温室大棚地热能与空气能多能互补能源配比研究

Study on Multi-Energy Complementary Energy Ratio Scheme of Geothermal-Air Hybrid Energy System in Greenhouses

“双碳”目标下采用可再生能源解决温室大棚的供冷、供暖,构建安全、绿色、智慧、高效的能源系统成为了温室大棚的发展方向。近年来,中深层地热能、浅层地热能、空气能在温室大棚供热中的应用得到快速发展。以河南省周口市扶沟县某农业产业园为例,结合区域地热资源情况,提出了中深层地热+地源热泵+水源热泵、中深层地热+地源热泵+空气源热泵、地源热泵+空气源热泵、地源热泵+水源热泵4种可再生能源配比方案。结果表明:地源热泵+水源热泵投资最高,地源热泵运行费用是中深层地热的2.01倍,空气源热泵运行费用是水源热泵1.95倍,地源热泵运行费用与水源热泵相相近。能源利用优先级排序为中深层地热能>地源热泵>水源热泵>空气源热泵,采用中深层地热+地源热泵+水源热泵方案为最优的能源搭配方式。

Under the"Carbon Peaking and Carbon Neutrality"goals,using renewable energy to solve the cooling and heating of greenhouses 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 geothermal 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 operating 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 similar 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.