Loughborough University
Browse
Eastwood_M_2023_CIBSE_TS.pdf (54.8 MB)

A method for quantifying the variability of the heat transfer coefficient due to inter-dwelling heat transfer using a matched pair of test houses

Download (54.8 MB)
conference contribution
posted on 2023-03-15, 16:47 authored by Max EastwoodMax Eastwood, Ben M RobertsBen M Roberts, Matthew LiMatthew Li, David AllinsonDavid Allinson

The Heat Transfer Coefficient (HTC) describes the average rate of heat loss (W/K) from a dwelling by transmission through the building fabric and by ventilation. There is increasing interest in measuring the HTC of dwellings to provide an energy rating, to quantify the energy performance gap, to demonstrate build quality, and to identify those dwellings which are most in need of energy efficiency retrofit. Whilst the HTC is generally given as a fixed number, it is hypothesised here to be a variable depending on several factors, yet the magnitude of this variability is unknown. A method for the quantification of one source of HTC variability is considered in this paper: heat transfer through the party wall which affects the HTC and may vary when adjacent dwellings are heated to different temperatures.

This paper describes the adaptation of a matched pair of semi-detached test houses, in a first of its kind experiment, to gain greater insight into the variability of HTC. The test houses were instrumented with calibrated sensors to measure the indoor temperature and the inter-dwelling heat flux. The thermal performance and air permeability of the test houses were measured using co-heating and fan pressurisation tests. This characterisation and the configuration of the test houses enabled the design of experiments to investigate the variability in the measured HTC. The methods presented will be valuable for the development of more accurate thermal characterisation tests.

Funding

EPSRC and SFI Centre for Doctoral Training in Energy Resilience and the Built Environment

Engineering and Physical Sciences Research Council

Find out more...

The UK Doctoral Training Centre in Energy Demand Reduction and the Built Environment

Engineering and Physical Sciences Research Council

Find out more...

EPSRC Centre for Doctoral Training in Energy Demand (LoLo)

Engineering and Physical Sciences Research Council

Find out more...

DEFACTO: Digital Energy Feedback and Control Technology Optimisation

Engineering and Physical Sciences Research Council

Find out more...

History

School

  • Architecture, Building and Civil Engineering

Published in

CIBSE ASHRAE Technical Symposium 2023

Source

CIBSE ASHRAE Technical Symposium 2023

Publisher

Chartered Institution of Building Services Engineers (CIBSE)

Version

  • AM (Accepted Manuscript)

Rights holder

© The Authors

Publisher statement

This paper was presented at the CIBSE ASHRAE Technical Symposium 2023 and is available at https://www.cibse.org/what-s-on/cibse-technical-symposium/past-papers-and-case-studies-archive

Acceptance date

2023-03-10

Publication date

2023-04-20

Copyright date

2023

Publisher version

Language

  • en

Location

Glasgow, UK

Event dates

20th April 2023 - 21st April 2023

Depositor

Max Eastwood. Deposit date: 13 March 2023

Usage metrics

    Loughborough Publications

    Categories

    No categories selected

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC