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.
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 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 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
