Distribution of Beam Solar Radiation in Buildings.Effect on Heating Demand

摘要：

This paper presents a geometrical method to evaluate sunspot position and area through a window on each wall of a parallelepiped room.This method provides fast calculations because the formulas are explicit.Then simulations were made with and without sunspot calculation.Four cases were tested:· Sunspots calculated at each time step with the previous geometrical method.· All the direct solar radiation on the floor.· 60% of the beam solar radiation on the floor.· Constant distribution coefficients calculated in a simple preliminary simulation.It appears that the heating demand for the second and the third cases is not well estimated.It therefore seems to be important to precisely calculate the direct solar radiation distribution in low-consumption buildings.If sunspots cannot be computed at each time step,the fourth case shows that when it is well evaluated,using constant coefficients only slightly change the heating demand.

关键词： Sunspot Thermal building simulation SimSpark

作者: Pierre Tittelein Louis Stephan Etienne Wurtz Gilbert Achard

作者单位: National Institute for Solar Energy INES,LOCIE,University of Savoy,Chambery,France National Institute for Solar Energy INES,LOCIE,University of Savoy,Chambery,France

会议类型: 国际会议

会议名称: The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)

会议地点: 大连

会议语种:英文

页码: 216-223

在线出版日期: 2008-07-01（万方平台首次上网日期，不代表论文的发表时间）