MODELING OF INDOOR AIR HUMIDITY - THE DYNAMIC BEHAVIOR WITHIN AN ENCLOSURE

被引:29
作者
ELDIASTY, R
FAZIO, P
BUDAIWI, I
机构
[1] School of Architecture, Arizona State University, Tempe
[2] Centre for Building Studies, Concordia University, Montreal
基金
加拿大自然科学与工程研究理事会;
关键词
24;
D O I
10.1016/0378-7788(92)90036-G
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Indoor air humidity behaviour within an enclosure has been mathematically modelled. A linear differential equation is used to describe the response of indoor air humidity to different moisture transport processes within the space. The modelled processes include: moisture absorption/desorption, surface condensation, air movement across enclosure boundaries, indoor evaporation, and indoor moisture generation. By using a discrete time step, nonlinear processes, such as surface condensation, can be assumed linear within the time interval. The differential equation is solved as part of a comprehensive numerical formulation through which the behaviour of moisture transport process and its contribution to indoor humidity dynamics are modelled. A theoretical study of indoor air humidity response to different moisture transport processes has revealed the importance of the involved processes in determining indoor air humidity behaviour. The relative influence of a particular process depends on its time constant, its interaction with other processes, and the continuity of the process. In addition, the impact of a given moisture transport process will also depend on the building physical and functional characteristics, as well as the prevailing outdoor environmental conditions.
引用
收藏
页码:61 / 73
页数:13
相关论文
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