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Characterization of the thermal structure of different building constructions using in-situ measurements and Bayesian analysis

Gori, V; Elwell, CA; (2017) Characterization of the thermal structure of different building constructions using in-situ measurements and Bayesian analysis. Energy Procedia , 132 pp. 537-542. 10.1016/j.egypro.2017.09.723. Green open access

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Abstract

A dynamic method, comprising a two lumped-thermal-mass model and Markov Chain Monte Carlo sampler, was used to analyze in-situ-monitored data and estimate the thermophysical properties of two walls of different construction. This method, unlike maximum a posteriori approaches, estimates the parameters’ probability distributions, providing insight into the wall’s thermal structure. Total R-values were well defined for both walls, whilst constituent estimated R-values for a solid wall having layers of materials with similar thermal properties were anticorrelated (thermal mass locations weakly constrained), but were not correlated for an insulated cavity wall with thermally distinct layers (thermal mass locations strongly thermally constrained).

Type: Article
Title: Characterization of the thermal structure of different building constructions using in-situ measurements and Bayesian analysis
Event: 11th Nordic Symposium on Building Physics, NSB2017
Location: Trondheim, Norway
Dates: 11 June 2017 - 14 June 2017
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.egypro.2017.09.723
Publisher version: http://doi.org/10.1016/j.egypro.2017.09.723
Language: English
Additional information: Copyright © 2017 The Authors. Published by Elsevier Ltd. Peer-review under responsibility of the organizing committee of the 11th Nordic Symposium on Building Physics.
Keywords: Heat transfer, In-situ measurements, U-value, R-value, Thermal mass, External wall, Bayesian statistics, MCMC, Grey-box model
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10025058
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