WSEAS Transactions on Heat and Mass Transfer
Print ISSN: 1790-5044, E-ISSN: 2224-3461
Volume 11, 2016
Investigation of Heat Transfer Decrement of Wall Structures Comparison of Measurements and Calculations
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Abstract: In these days, the examinations of the thermal behavior of different wall structures are so important from the point of view of reducing energy efficiency of Buildings. The mainly used thermal insulating materials are the plastic foams (expanded and extruded) and the mineral wool materials. Nowadays, the use of the ceramic based insulating paints is also spread over. Thermal parameters of buildings, such as thermal capacity, heat-loss coefficient, time constant, thermal delay, etc. are useful in the analysis of the dynamic thermal behaviour and the characterization of buildings. This paper presents measurement methods to reach the decrement factor of different building structures by using a heat flux meter and hot box method. Moreover, calculations for the investigation of the decrement factor of wall structures were also presented. Here has to be emphasized that this method can be useful as well for everyone who is about to describe and carry out thermal sizing of buildings. In this paper three types of building structures were measured. These measurements were accomplished through an inbuilt plaster/brick/plaster wall construction insulated internally with a ceramic material at the first time and externally with an Expanded Polystyrene later. The calculations were carried out on a concrete and brick based walls covered with different insulators.
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Keywords: thermal decrement factor, building structures, thermal energy, brick wall, hukseflux apparatus, hot box
Pages: 1-7
WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 11, 2016, Art. #1