毛细管辐射末端的建筑负荷及新风系统能耗特性分析

发布时间：2018-11-14 14:53

【摘要】：舒适与节能已成为暖通空调领域研究与发展的主题,传统对流空调不仅存在“吹风感”,还易引发一系列卫生问题,严重影响人类的身心健康,而毛细管辐射空调的诞生却很好地解决了上述问题。本文将从能耗角度来对毛细管辐射空调进行分析。首先对P.O.Fanger教授提出的热舒适性方程进行编程计算,得出在选取合适的平均辐射温度和相同热舒适性条件下,夏季毛细管辐射空调房间的室内空气温度高于对流空调房间的室内空气温度,冬季则低于对流空调的室内空气温度的结论,表明选取合适的平均辐射温度以及合理的新风除湿方式可以使毛细管辐射空调新风系统的能耗得到降低。其次利用C++和Matlab对计算热环境参数的热平衡方程组进行编程计算,得出夏季毛细管辐射空调房间外围护结构内表面温度会低于对流空调房间外围护结构内表面温度,冬季则高于对流空调房间外围护结构内表面温度的结论,这表明毛细管辐射空调房间的围护结构负荷大于对流空调房间的围护结构负荷。而在热舒适性条件下,综合考虑了新风负荷,得出了当夏季(冬季)毛细管辐射空调房间的室内空气温度满足()要求时可以使其负荷比对流空调房间的负荷低的结论,这表明毛细管辐射空调比对流空调更节能。最后提出依据平均辐射温度的建筑设计和毛细管辐射空调设计构思,主要通过Fluent的模拟探讨了毛细管席铺设面积紧张时的一些解决措施,并得出在保证夏天不结露的情况下,应优先选择改变供水温度的结论。
[Abstract]:Comfort and energy saving have become the subject of research and development in HVAC field. Traditional convective air conditioning not only has "blowing feeling", but also easily leads to a series of health problems, which seriously affects the physical and mental health of human beings. The birth of capillary radiation air conditioning has solved the above problems. In this paper, capillary radiation air conditioning is analyzed from the angle of energy consumption. Firstly, the thermal comfort equation proposed by Professor P.O.Fanger is programmed and calculated, and it is concluded that under the appropriate average radiation temperature and the same thermal comfort condition, The conclusion that the indoor air temperature of the capillary radiation air conditioning room in summer is higher than that of the convection air conditioning room, and that in winter is lower than the indoor air temperature of the convection air conditioning room. It is shown that the energy consumption of the fresh air system of capillary radiation air conditioning system can be reduced by selecting appropriate mean radiation temperature and reasonable fresh air dehumidification mode. Secondly, using C and Matlab to calculate the heat balance equations of thermal environment parameters, it is concluded that the inner surface temperature of the outer envelope structure of the capillary radiation air conditioning room in summer will be lower than that of the convection air conditioning room outside the envelope structure. The conclusion that the inner surface temperature of the outer enclosure structure is higher than that of the convection air conditioning room in winter shows that the envelope structure load of the capillary radiation air conditioning room is greater than that of the convection air conditioning room. Under the condition of thermal comfort, considering the fresh air load, it is concluded that when the indoor air temperature of the capillary radiation air conditioning room meets the requirement in summer (winter), the load can be lower than that of the convection air conditioning room. This shows that capillary radiation air conditioning is more energy efficient than convection air conditioning. Finally, according to the architectural design of mean radiation temperature and the design conception of capillary radiation air conditioning, the paper mainly discusses some measures to solve the tension of capillary mat laying area through Fluent simulation, and draws the conclusion that, under the condition of ensuring that there is no dew in summer, Priority should be given to the conclusion of changing the temperature of the water supply.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU83

【相似文献】