Review of special features of determining resistance to heat transfer under natural conditions and in a climate chamber

Abstract

The current study aims to review methods of experimental determination of the resistance to heat transfer. In order to study the special features of determining thermal resistance under natural conditions and in a climate chamber, modern patents have been reviewed. Two studies by Mureev P.N. et al. discussed in this article were intended to study the determination of the resistance to heat transfer and the influence of counter heat flows arising in the thickness of the wall enclosure under quasistationary conditions in full scale. The authors’ experiment has been analyzed, the distinctive feature of which is the introduction of sensors inside the wall enclosure, which makes it possible to more accurately determine the temperature distribution and direction of heat flows inside the enclosure. In his research, Budadin O.N. together with colleagues examined the issues of improving the quality and reliability of determining the thermal resistance of a building envelope when tested in a climate chamber, and succeded in obtaining a very low error in determining the thermal resistance. A modified climatic chamber presented as a stand with a mobile cassette for installing a sample patented by Verkhovsky A.A. and co-others has also been considered. These methods were justified by the achievement of technical research results.