摘要
在严寒地区,办公建筑空调系统年运行的热负荷远大于冷负荷。为了减少建筑能耗及实现空调系统长期稳定运行,采用太阳能-土壤源热泵系统(SGCHP)作为建筑的冷热源,并利用太阳能土壤蓄热维持土壤热平衡。本文对1个SGCHP系统在办公建筑应用实例进行能、利用效率与热经济学分析,结果表明该系统能量利用效率与效率均高于燃气锅炉与冷水机组的冷热源型式,其制热工况的效率高达0.482;其年度化成本、能成本、成本分别为83.43×104元/年、101.04元/GJ、729.67元/GJ,均高于其他冷热源型式,反映了该系统方案在经济与能量利用方面的合理性。
In severe cold regions,the heat load of air conditioning system of office building is far higher than the cold load in year-round operation.In order to reduce the energy consumption of building and to realize a long-term stable running of air conditioning system,the solar-soil source heat pump system （SGCHP） is selected as the cold/ heat source of building.And the solar-soil heat storage is used for keep the thermal balance.This paper analyzes the energy and exergy utilization efficiency and thermo-economics of the SGCHP system applied in the office building.The result shows that both energy and exergy utilization efficiency of the system is higher than that of gasfired boiler and water chiller.The exergy efficiency of the system＇ s heating mode amounts to 0.482.The yearly cost,energy cost and exergy cost is respectively 83.43 × 104RMB/year,101.04 RMB/GJ and 729.67 RMB/GJ,all higher than those of other cold/heat sources.So the system is reasonable in both economy and energy.
出处
《建筑科学》
北大核心
2014年第4期59-64,共6页
Building Science
