摘要
蓄水屋面是一种新型的节能、隔热屋面，由于水层的存在，其传热过程非常复杂，计算时必须考虑水和室外空气之间的热湿交换．本文用拉普拉斯变换得出了蓄水屋面温度和热流动态响应的计算公式．结果表明，蓄水层大大降低了屋顶内表面的温度输出和热流响应，增强了抵抗气温波动的能力，具有良好的节能和隔热效果．
To analyze the heat transfer characteristics of the water storage roof,which is a developing and insulated building structure,demands to analyze the extremely complicate heat and humid exchange between the outdoor air and the water film.In this paper,the authors have obtained the temperature and heat flux responses,which demonstrates that the temperature and heat flux of the lower surface of the roof are greatly reduced.Thus we find that the maintenance of a water film on the roof is a good way to resist the fluctuation of outdoor temperature and significantly reduce the cooling load of a building.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
1998年第S1期129-133,共5页
Journal of Hunan University:Natural Sciences
关键词
蓄水屋面
传递函数
拉氏变换
传热分析
water storage roof,transfer function,Laplace transform,heat transfer analysis
