多层墙体热湿耦合传递模型及验证
Mathematical model and its validation of coupled heat and moisture transfer for multilayer wall
黄建恩 1吕恒林 1冯伟1
作者信息
- 1. 中国矿业大学，力学与建筑工程学院，江苏徐州221116
- 折叠
摘要
从非平衡热力学角度论证了多层墙体热湿耦合过程采用水蒸气分压力和温度作为驱动势的合理性。由于水蒸气分压力是含湿量和温度的函数，利用全微分思想，建立了多层墙体热湿耦合传递模型，该方法可避免Budaiw i方法在热湿耦合模型建立过程中采用的空气含湿量与相对湿度间的近似表达式，而且简化了方程系数，便于方程的求解。通过对多层墙体求解结果的对比，验证了该模型的有效性。
Abstract
Its rationality of temperature and water vapor partial pressure as driving potential for coupled heat and moisture transfer was demonstrated based on non‐equilibrium thermodynamics .As water vapor partial pressure is a function of moisture content and temperature , mathematical model of coupled heat and moisture transfer for multilayer wall were established according to the theory of total differential .The approximate expressions between humidity content and relative humidity of air used in Budaiwi method could be avoided . The coefficients of mathematical model were simplified and could improve efficiency of solution . Its validation was illustrated by contrasting and analyzing the simulation results of a multilayer wall .
关键词
数学模型/墙体/热传递/湿传递/热湿耦合Key words
mathematical models/walls/heat transfer/moisture transfer/coupled heat and moisture引用本文复制引用
基金项目
江苏省“六大人才高峰”资助项目(2010-JZ-006)
江苏省优势学科建设工程(SA1205)
出版年
2015
NETL
NSTL
维普
万方数据