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由于单独运行太阳能和地源热泵系统时,各自存在缺陷。因此,提出太阳能与地源热泵系统交替供暖的运行方式。建立太阳能集热器和地源热泵机组的数学模型,并以呼和浩特地区某工程为例,通过测试得到室外温度、逐时热负荷、太阳能辐射强度和地源热泵机组进出水温度。采用静态分析法计算交替供暖系统的经济性。结果表明,交替供暖系统在初期投资上比单独使用地源热泵系统高,但运行7.33年后能收回初期投资。同时在热负荷大于冷负荷地区,交替供暖系统更具有可行性和环保性。
Due to the separate operation of solar and ground source heat pump systems, each with its own flaws. Therefore, the proposed solar and ground source heat pump system alternately heating mode of operation. The mathematic model of solar collectors and ground source heat pump units is established. Taking a project in Hohhot as an example, outdoor temperature, hourly heat load, solar radiation intensity and inlet and outlet temperature of ground source heat pump units are obtained. Static analysis method to calculate the economy of alternate heating system. The results show that the alternative heating system has a higher initial investment than the ground-source heat pump system alone, but can recover initial investment after 7.33 years of operation. At the same time in the heat load is greater than the cold load area, alternate heating system is more feasible and environmental protection.