Influence of moisture on thermal properties of walls in basements of buildings

Abstract

Abstract. This paper is focused on the problems of increased moisture in the structure of buildings, especially in basements of buildings, which have usually very poor insulation against ground moisture. Wet walls are rather a common problem of old buildings, but it can appear also in new buildings as well. Moisture in the wall influences the insulation quality; bigger heat losses continuously cause problems of worse heat balance, higher consumption of energy for heating and it can result in not sufficient indoor conditions in such a room or building. The aim of this paper is to present the results of evaluation of the main thermal-heat properties in basement rooms with partly wet and partly dry peripheral wall. The surface temperature and surface moisture were determined by measurement in wet and dry parts of the wall in the same room. The moisture of the wet part was approximately four times higher than of the dry part of the wall. The heat flux density passing from the heated room through the wall was also measured using a special sensor. The measurement results showed a significant effect of high wall moisture on the heat losses, as the heat flux density was one and a half times higher. The obtained results from this measurement and findings may be useful for further research in this issue as well as for practical solutions for similar problems in many older buildings.

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A Non-Destructive System Based on Electrical Tomography and Machine Learning to Analyze the Moisture of Buildings

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Non-Destructive System Based on Electrical Tomography and Machine Learning to Analyze Moisture of Buildings

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