摘要
建筑能耗分析中透过玻璃窗日射负荷占有较大比重,B IN能耗计算方法(也叫温、湿频数法)认为该项负荷与温度成简单的线性关系,这样处理过于粗略。一方面日射负荷与温度不是直线关系;另一方面确定两点时,负荷所对应的代表温度的选取主观因素很大,缺乏客观标准。针对这个问题,先得到逐日最大日射得热因数DJ m ax,乘以逐时冷负荷系数得到透过玻璃窗日射负荷与温度的全年逐时详细关系。再按朝向统计不同温度下日射负荷的平均值,得出温度与冷负荷的实用关系,经过统计处理计算方法仍可以比较简单。并将这种方法求得的冷负荷与原方法作了比较。由于它反映了温度与该部分冷负荷的真实关系,使负荷和能耗计算精度提高。并以成都南向玻璃窗为例介绍了新统计关系的使用方法。
The proportion of radiation load through glass windows in building energy analysis is comparatively great ; it is regarded as linear relation with temperature in BIN method, which is extremely a rough method. It is not only because relation between such radiation load and temperature is far from linear relationship, but also there is lack of objective standard for the selection of corresponding representative temperature to the load. To solve this problem, calculating the maximum factor DJmax firstly, then get the hourly corresponding relation of load and temperature by multiplying the hourly cool load coefficient. The practical relation of load and temperature could be obtained by counting up the average load to each temperature at each direction ; the load calculation method is still simple using a series of statistic data. A compari- son has been made between this method and the former one. As it is the real reflection of relation between the temperature and load, the precision of load calculation is enhanced. cing window in Chengdu is given in this paper. The process using this method to calculate load for south facing window in Chengdu is given in this paper.
出处
《重庆建筑大学学报》
EI
CSCD
北大核心
2006年第1期88-91,共4页
Journal of Chongqing Jianzhu University
关键词
BIN法
建筑能耗
负荷
日射
简化计算
玻璃窗
BIN method
building energy consumption
load
insolation
simplified calculation
glass window
