UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Thermal characterization of building assemblies by means of transient data assimilation

Soret, GM; Lázaro, D; Carrascal, J; Alvear, D; Aitchison, M; Torero, JL; (2017) Thermal characterization of building assemblies by means of transient data assimilation. Energy and Buildings , 155 pp. 128-142. 10.1016/j.enbuild.2017.08.073. Green open access

[img]
Preview
Text
UQ697454_OA.pdf - Accepted version

Download (2MB) | Preview

Abstract

The quantification of the overall “R-value” of building components is commonly achieved by using numerical models which are generally validated using the standardized Hot Box test. This test set-up follows a complex methodology specifically designed to deliver only the R-value. Modern building assemblies are of a level of complexity that many times a single parameter is insufficient to improve the design of the assembly. This paper proposes a simple thermal test set-up to analyse both transient and steady state heat flow processes, allowing for effective numerical fitting of parameters that describe all internal heat flow processes. As a result, the contribution of each element of an assembly can be evaluated on its overall insulating capabilities, thereby allowing for a truly optimised design solution. Two wall systems including significant thermal bridges have been chosen to illustrate this methodology. The proposed method, not only delivers a steady state thermal assessment as reliable as the standardized Hot Box procedure, but also allows a precise quantification of internal heat flows and the capability to conduct realistic transient state thermal assessments.

Type: Article
Title: Thermal characterization of building assemblies by means of transient data assimilation
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.enbuild.2017.08.073
Publisher version: https://doi.org/10.1016/j.enbuild.2017.08.073
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Thermal bridges, Guarded hot box, Small scale thermal test, Numerical modelling
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10069560
Downloads since deposit
57Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item