摘要
介绍太阳能直供毛细管辐射供暖系统的原理、组成和流程。利用TRNSYS软件建立系统瞬时仿真模型,在通过实际测试验证模型准确可靠的前提下,更改建筑模型参数得出天津地区太阳能集热面积与供暖面积之比与建筑物的耗热量指标的对应关系,得到低能耗建筑的耗热量指标对应的太阳能集热面积与供暖面积之比。在太阳能直供毛细管辐射供暖系统的太阳能保证率达到100%,太阳能集热器集热效率为45%,建筑物耗热量指标在9.5 W/m2左右,供暖室内设计温度为18℃的条件下,1 m2的太阳能集热器面积可以负担4 m2的建筑面积的供暖负荷。
The principle, composition process of capillary radiation heating system using solar energy are introduced. The transient simulation model of the system was established by TRNSYS software. Under the premise of verifying the accuracy and relia- bility of the model by the practical test, the corre- sponding relations between the ratio of solar collector area to the heating area and the building heat consump- tion index in Tianjin area are obtained by changing the building model parameters, and the ratio of solar col- lector area corresponding the heat consumption index of building with low energy consumption to the heating ar- ea is determined. The solar collector area of 1 m2 can satisfy the heating load of building area of 4 m2 when the solar fraction of capillary radiation heating system using solar energy is 100%, the thermal efficiency of solar collectors is 45 %, the building heat consumption index is around 9.5 W/m2, and the indoor heating design temperature is 18 ℃.
出处
《煤气与热力》
2015年第2期24-29,共6页
Gas & Heat
基金
国家科技支撑计划项目"天津生态城绿色建筑运营管理关键技术集成与示范"(2013BAJ09B03)
