【作者】 贾培信；

【导师】 赵立华；

【作者基本信息】 华南理工大学 ， 建筑技术科学， 2011， 硕士

【摘要】 随着经济的发展和人们生活水平的提高,建筑空调能耗不断增加,人们对空调舒适性及室内空气品质的要求也有所提高。近年来,国内市场上出现了一些利用顶板辐射供冷与置换通风相结合的复合空调系统来实现室内良好舒适性能的住宅。而要建设舒适性住宅首先必须处理好围护结构的保温隔热问题,如何选择适宜广州气候的建筑外围护结构,使建筑物具有良好的室内热舒适,以减少对人工冷热源的依赖,降低建筑耗能成为急需研究的课题。围护结构对能耗的影响主要包括两个方面,一方面围护结构的热工性能对能耗的影响;另一方面,围护结构的窗墙比、体形系数对能耗的影响。舒适性住宅是一种利用顶板辐射与置换通风来获得良好舒适性的住宅,它要求每个房间都具备良好的舒适性,而空调系统供冷量是有一定限度的,为了保证最大冷负荷房间的良好舒适性,就必须对该房间的围护结构做一定限制。因此本文的研究主要包括以下几方面,首先分别以两栋体形特征不同的建筑为研究对象,运用DEST-H软件具体分析了不同热工性能的外墙、外窗和屋面下的建筑能耗情况,得出了建筑围护结构的热工性能对建筑能耗的影响规律。其次以其中一栋建筑为研究对象,运用DEST-H软件模拟分析了窗墙比和体形系数对建筑能耗的影响,得出了窗墙比和体形系数对整栋建筑能耗的影响规律。再次以最大冷负荷房间为研究对象,利用鸿业负荷模拟软件模拟不同窗墙比下的能耗,从而确定使该房间获得良好舒适性的围护结构面积组合。最后,还分析了顶板辐射供冷与置换通风相结合的复合空调系统与常规柜式空调系统房间热环境的区别,并从PMV-PPD值、竖直温度梯度、风感危险三个方面对模拟结果进行分析,得出复合空调系统热舒适性能更好的结论。更多还原

【Abstract】 With the development of economy and the improvement of people’s living standard, building energy consumption is increasing, people strongly demand to improve air conditioning comfort and indoor air quality. In recent years, many comfortable residence have also arisen in domestic market which utilized air conditioning systems combining with radiant cooling ceiling and displacement ventilation to obtain an indoor environment with favorable comfort .However, we must deal with the heat insulating problem of building envelopes at first to build comfortable residences in Guangzhou, and it needed an urgent research on how to choose appropriate building envelopes which could fit Guangzhou climate features, create well indoor thermal comfort, lessen the dependence of artificial cold/heat source and reduce energy consumption.The effect on the energy consumption for the envelops mainly includes two aspects which are the influence of envelops thermal performance and the influence of area ratio of window to wall and shape coefficient. Comfort residence is a housing which could obtain well indoor environment using air conditioning systems combining with radiant cooling ceiling and displacement ventilation. It requires well indoor environment in every room. However, the cooling amount of the system is limited,so in order to ensure every room take a good comfort, we must perform certain restrictions on envelop. Therefore this dissertation mainly include the following research aspects.Firstly, this paper collected two buildings whhich has different shape Character as the research object, used the software of DEST-H to analyze building energy consumption under ceiling, wall and window of different thermal performance and obtained the influence law of the thermal parameters to the building energy consumption.Secondly, this paper also used the software of DEST-H to analyze the influence of area ratio of window to wall and shape coefficient on the building energy consumption and obtain the influence law of area ratio of window to wall and shape coefficient on the building energy consumption.Thirdly , this paper collected the maximum cooling load room as the research object, employed HongYe energy load simulation software to simulate building energy consumption under different area ratio of window to wall to find out suitable area combination of building envelope which could realize constant temperature and humidity in room.Finally, it simulated the difference in thermal environment between the air conditioning systems combining with radiant cooling ceiling and displacement ventilation and conventional air conditioning systems. And we analyzed the simulation from the three different aspects of PMV-PPD, vertical temperature gradient, and wind dangerous and concluded that the compound air conditioning system could achieve better thermal comfort performance.更多还原