【摘要】 以低温热水作为供暖热源、地板作为辐射媒介,测试太阳热水器和热泵热水器单独运行和联合运行的供回水温度,评价各供热方案的能效比和经济性。结果表明,太阳能和热泵热水器的交替供热方式效果最佳,单位耗能制热量比单独使用热泵热水器提高81.5%,而每小时平均运行花费降低3.95%。更多还原

【Abstract】 Rational utilization of solar and other kinds of renewable energy is an important way to reduce heating energyconsumption of residential buildings. In this paper,an experimental study with low-temperature hot water as a heatingsource,radiant floor as a media,was conducted to investigate the supply and return heating water characteristics of thefloor radiant heating system in a test room,in which the solar water heater and the heat pump water heater run separatelyand assembly. Further,the energy efficiency and economics of various heating programs were evaluated. The resultsshowed that the effect of alternate heating method of solar water heater and heat pump water heater is the best among alltested heating systems. Its COP(Coefficient of Performance)value improved by 81.5% than that of the individual heatpump water heater,while its PCH(Pure Cost per Hour)value reduced by 3.95%. It can be expected that a stable heat ra-diant floor heating system with high energy efficiency and good economics will be provided by combination and optimiza-tion of heat pumps and solar water heaters.更多还原