Modelling uniformly porous facades to predict dwelling infiltration          rates

Jones, Benjamin; Lowe, RJ; Davies, Martin; Chalabi, Zaid; Das, Payel; Ridley, Ian

doi:10.1177/0143624413499354

Cited by 14 publications

(14 citation statements)

References 9 publications

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“…This article applies DOMVENT3D, a model of infiltration and exfiltration through any number of façades developed initially by Lowe [23] on the basis of a theoretical formulation by Lyberg [24], and subsequently extended by Jones et al [25]. It assumes two things about those façades: all are uniformly porous; and the pressure distribution over a vertical surface is linear.…”

Section: Modelling Infiltration and Exfiltration Heat Lossmentioning

confidence: 99%

“…integrates the airflow rate in the vertical plane to predict the total airflow rate through any number of façades [25]. DOMVENT3D makes further assumptions about the dwelling.…”

Section: Modelling Infiltration and Exfiltration Heat Lossmentioning

confidence: 99%

“…DOMVENT3D is implemented using bespoke MATLAB code [26] available online [27]. Its assumptions, merits (including advantages over other models of infiltration), limitations, and the corroboration of its predictions are discussed briefly in Appendix A and in depth elsewhere [20,25].…”

Section: Modelling Infiltration and Exfiltration Heat Lossmentioning

confidence: 99%

“…The following equations are derived in [25] and are reproduced assuming no mechanical ventilation. The net airflow rate through a system of vertical and horizontal surfaces that comprise the thermal envelop of a building is zero and described by the continuity equation …”

Section: Appendix A: Domvent3dmentioning

confidence: 99%

See 3 more Smart Citations

Assessing uncertainty in housing stock infiltration rates and associated heat loss: English and UK case studies

Jones

Das

Chalabi

et al. 2015

Building and Environment

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Strategies to reduce domestic heating loads by minimizing the infiltration of cold air through adventitious openings located in the thermal envelopes of houses are highlighted by the building codes of many countries. Consequent reductions of energy demand and CO 2 e emission are often unquantified by empirical evidence. Instead, a mean heating season infiltration rate is commonly inferred from an air leakage rate using a simple ratio scaled to account for the physical and environmental properties of a dwelling. The scaling does not take account of the permeability of party walls in conjoined dwellings and so cannot differentiate between the infiltration of unconditioned ambient air that requires heating, and conditioned air from adjacent dwellings that does not.A stochastic method is presented that applies a theoretical model of adventitious infiltration to predict distributions of mean infiltration rates and the associated total heat loss in any stock of dwellings during heating hours. The method is applied to the English and UK housing stocks and provides probability distribution functions of stock infiltration rates and total heat loss during the heating season for two extremes of party wall permeability. The distributions predict that up to 79% of the current English stock could require additional purpose-provided ventilation to limit negative health consequences. National models predict that fewer dwellings are under-ventilated. The distributions are also used to predict that infiltration is responsible for 3-5% of total UK energy demand, 11-15% of UK housing stock energy demand, and 10-14% of UK housing stock carbon emissions.3 HIGHLIGHTS  Heating season infiltration and heat loss distributions for English housing stock. Up to 79% of English dwellings may be under ventilated. Exfiltration estimated to be responsible for 3-5% of total UK energy demand. Exfiltration estimated to be responsible for 11-15% UK housing stock energy demand. Exfiltration estimated to be responsible for 10-14% UK housing stock CO 2 emissions.

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Section: Modelling Infiltration and Exfiltration Heat Lossmentioning

confidence: 99%

“…integrates the airflow rate in the vertical plane to predict the total airflow rate through any number of façades [25]. DOMVENT3D makes further assumptions about the dwelling.…”

Section: Modelling Infiltration and Exfiltration Heat Lossmentioning

confidence: 99%

Section: Modelling Infiltration and Exfiltration Heat Lossmentioning

confidence: 99%

Section: Appendix A: Domvent3dmentioning

confidence: 99%

See 2 more Smart Citations

Assessing uncertainty in housing stock infiltration rates and associated heat loss: English and UK case studies

Jones

Das

Chalabi

et al. 2015

Building and Environment

View full text Add to dashboard Cite

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“…The issue of airtightness in relation to the energy calculation of a building was considered in [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Airtightness test of single-family building and calculation result of the energy need for heating in Polish conditions

Kowalski

Szałański

2018

E3S Web Conf.

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Abstract. The article presents results of air permeability measurements carried out for envelopes of two entire typical single-family residential buildings and separately for envelopes of garages and residential zones of these buildings. The effect of taking into account separate air permeability measurements of building zones on the calculation results of infiltration heat losses and on the energy need for heating is analysed. The calculation results obtained in this way are then compared to calculation results obtained in the case of air permeability measurements of the entire building envelope.

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Purifier or fresh air unit? A study on indoor particulate matter purification strategies for buildings with split air-conditioners

Shi

2018

Building and Environment

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Modelling uniformly porous facades to predict dwelling infiltration rates

Cited by 14 publications

References 9 publications

Assessing uncertainty in housing stock infiltration rates and associated heat loss: English and UK case studies

Assessing uncertainty in housing stock infiltration rates and associated heat loss: English and UK case studies

Airtightness test of single-family building and calculation result of the energy need for heating in Polish conditions

Purifier or fresh air unit? A study on indoor particulate matter purification strategies for buildings with split air-conditioners

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