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本文针对北京地区的气候条件,选取1栋单体低密度建筑为典型建筑,采用土壤源热泵系统进行供暖和空调。因地下换热器吸、排热量不平衡,故采用太阳能在冬季进行补热,基本可以平衡吸、排热量的差值。在此基础上,对经过补热的系统和未进行补热的系统的地下土壤温度场变化规律进行了分析和研究。结果表明,对于2种系统,蓄热体第1年的土壤平均温度均有一定程度的下降,地下换热器吸、排热量不平衡系统的地温下降量要远大于平衡系统,而其它年份的地温变化量不大;每个年份蓄热体总是通过地表面向外部散失热量,尤其是第1年的散热量在蓄热体总体换热量中所占的比重较大,对整个蓄热体的热平衡影响也较大。
This article aims at the climate conditions in Beijing, select a single low-density buildings as a typical building, the use of ground-source heat pump system for heating and air conditioning. Due to underground heat exchanger suction, exhaust heat imbalance, so the use of solar energy in the winter heat, the basic balance between absorption, the difference between heat. On this basis, the change rule of the temperature field of underground soil after the heat recovery system and the non-heat recovery system are analyzed and studied. The results show that for the two systems, the mean temperature of soil in the first year of regenerator decreases to a certain degree, and the temperature drop of the system of imbalance in sucking and discharging of underground heat exchanger is much larger than that of the balance system. The amount of change in the ground temperature is not large; every year, the regenerator always dissipates heat to the outside through the ground surface, especially the heat quantity in the first year occupies a larger proportion in the overall heat exchange capacity of the regenerator, The heat balance is also more affected.