摘要
太阳能直接供暖系统在满足用户供热需求时,通常需要补充一定量的一次常规能源。该文在系统能量平衡的基础上,引入太阳能倍率等参数,同时考虑太阳能集热器采暖季利用系数的影响,推导了太阳能直接供暖系统与电压缩水源热泵系统的一次能耗比计算公式。进而对以燃煤锅炉为辅助热源的太阳能直接供暖系统与水源热泵的一次能源消耗进行了对比分析。结果表明,以燃煤锅炉为辅助热源的太阳能直接供暖系统在其太阳能倍率大于平衡太阳能倍率时,比水源热泵节约一次常规能源;在其太阳能倍率小于平衡太阳能倍率时,与水源热泵相比,起不到节约一次常规能源的作用。
Supplement of primary energy is needed by a Direct Solar Heating System （DSHS） in order to meet the heating need of the users. On the basis of energy equilibrium, equations of primary energy demand ratio between a DSHS and a Water Source Heat Pump （WSHP） are derived by introducing solar magnification with the winter solar collector efficiency being taken into consideration. The primary energy consumption of a DSHS with a coal-fired boiler supplement source is compared with that ofa WSHP. The result shows that a DSHS can save more primary energy than a WSHP when the solar magnification is greater than the equilibrium solar magnification, but it consumes more primary energy than a WSHP when the solar magnification is less than the equilibrium solar magnification.
出处
《建筑热能通风空调》
2007年第1期78-80,84,共4页
Building Energy & Environment
关键词
太阳能
供暖
水源热泵
一次能耗比
太阳能倍率
solar energy, heating, water source heat pump, primary energy consumption ratio, solar magnification
