Coupled heat air and moisture transfer in building structures

被引：53

作者：

Haupl, P ^{[1
]}

Grunewald, J ^{[1
]}

Fechner, H ^{[1
]}

Stopp, H ^{[1
]}

机构：

[1] FACHHSCH LAUSITZ,D-01968 SENFTENBERG,GERMANY

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1997年 / 40卷 / 07期

关键词：

Air - Algorithms - Buildings - Computer simulation - Enthalpy - Heat losses - Mass transfer - Moisture - Partial differential equations - Phase transitions - Porous materials - Thermal conductivity;

D O I：

10.1016/S0017-9310(96)00245-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Based on the energy, mass and linear momentum conservation laws as well as the entropy law, a coupled, partial, non-linear, differential equation system for the heat, air and moisture transfer in porous materials follows, and for the more-dimensional solution of it, a suitable algorithm including the simulation software has been developed. Its efficiency is demonstrated by a recent building structure-chuted concrete between fibre board with polystyrol-foam outside insulation-under the boundary conditions of the TRY Essen: hourly values of outdoor climate. As a result of the high built-in moisture, moisture damages (mould growing) in the base level (exterior wall/concrete plate over the basement garage) and inadmissible high heat losses caused by the moisture depending thermal conductivity and the additional enthalpy hows coupled to the moisture movement and phase changing are observed in the first years. Copyright (C) 1996 Elsevier Science Ltd.

引用

页码：1633 / 1642

页数：10

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