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Estimating the thermal transport properties of building components

Abstract

Real building`s and their components experience dynamic thermal transmission. It is possible to represent thermal transmission as either a supposition of local constitutive convolution equations in a local region of the solid or as a directed graph network between connected thermodynamic regions within the solid. The purpose of this paper is to show that only the local constitutive equations yield, for all cases considered, the correct values for the physical properties of the materials under test, whereas the directed graph network representations are unreliable. This is because directed graph network representations are ill posed for the one dimensional flow case and are likely to lead to erroneous predictions for the design performance of buildings. The local constitutive equations allow the measurement of thermal conductivity and transmission of building components in the field. Thus providing a unique insight into the actual thermal performance of constructions in use. (1 figure, 2 tables). (Author)
Authors:
Irving, A D; [1]  Dudek, S; Warren, G; [2]  Dewson, T [3] 
  1. Rutherford Appleton Lab., Chilton (United Kingdom)
  2. Newcastle upon Tyne Univ. (United Kingdom). Dept. of Building Science
  3. Bristol Univ. (United Kingdom). Dept. of Mathematics
Publication Date:
Oct 01, 1993
Product Type:
Technical Report
Report Number:
RAL-93-076
Reference Number:
SCA: 320100; PA: GB-93:053602; EDB-94:029544; NTS-94:010564; ERA-19:009511; SN: 94001135370
Resource Relation:
Other Information: PBD: Oct 1993
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; BUILDING MATERIALS; HEAT TRANSFER; MATHEMATICAL MODELS; HEAT FLUX; VALIDATION; 320100; BUILDINGS
OSTI ID:
10124768
Research Organizations:
Rutherford Appleton Lab., Chilton (United Kingdom)
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Other: ON: DE94733301; TRN: GB9353602
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
GB
Size:
17 p.
Announcement Date:
Jul 04, 2005

Citation Formats

Irving, A D, Dudek, S, Warren, G, and Dewson, T. Estimating the thermal transport properties of building components. United Kingdom: N. p., 1993. Web.
Irving, A D, Dudek, S, Warren, G, & Dewson, T. Estimating the thermal transport properties of building components. United Kingdom.
Irving, A D, Dudek, S, Warren, G, and Dewson, T. 1993. "Estimating the thermal transport properties of building components." United Kingdom.
@misc{etde_10124768,
title = {Estimating the thermal transport properties of building components}
author = {Irving, A D, Dudek, S, Warren, G, and Dewson, T}
abstractNote = {Real building`s and their components experience dynamic thermal transmission. It is possible to represent thermal transmission as either a supposition of local constitutive convolution equations in a local region of the solid or as a directed graph network between connected thermodynamic regions within the solid. The purpose of this paper is to show that only the local constitutive equations yield, for all cases considered, the correct values for the physical properties of the materials under test, whereas the directed graph network representations are unreliable. This is because directed graph network representations are ill posed for the one dimensional flow case and are likely to lead to erroneous predictions for the design performance of buildings. The local constitutive equations allow the measurement of thermal conductivity and transmission of building components in the field. Thus providing a unique insight into the actual thermal performance of constructions in use. (1 figure, 2 tables). (Author)}
place = {United Kingdom}
year = {1993}
month = {Oct}
}