Airtightness, Air Exchange and Energy Performance in Historic Residential Buildings with Different Structures

Eskola, Lari; Alev, Üllar; Arumägi, Endrik; Jokisalo, Juha; Donarelli, Anna; Sirén, Kai; Kalamees, Targo

doi:10.1080/14733315.2015.11684066

Cited by 17 publications

(10 citation statements)

References 19 publications

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“…The resulting research question is: "What are typical air leakages affecting the airtightness of buildings, and in what ways can they be improved?". The keywords applied in searches were defined based on titles and keywords found in the literature [2,3,8,[19][20][21][22][23][24][25] resulting from a preliminary screening using the databases Scopus and Oria. The keywords, Boolean operators and nesting combinations that were used are presented in Table 2.…”

Section: Methodsmentioning

confidence: 99%

Air leakage paths in buildings: Typical locations and implications for the air change rate

et al. 2020

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The harsh Norwegian climate requires buildings designed to high standards. An airtight building envelope is crucial to achieve an energy efficient building and to avoid moisture problems. Results from the SINTEF Building defects archive show that a considerable part of the building defects is related to air leakages. In addition, air leakages increase the energy demand of buildings. A literature study has been conducted in order to map typical air leakage paths of Norwegian wooden houses. In order to increase the performance, different sealing methods including the use of tape has been reviewed. The results show that the most common air leakages reported from field measurements in the literature are in the connections between external wall and ceiling or floor, external wall and window or door, and external wall and penetrations in the barrier layers. Results from laboratory investigations showed that the traditional solutions can be further improved by introduction of modern foil materials in combination with sealing tapes. However, questions can be raised regarding the necessity of tape sealing all available joints.

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Section: Methodsmentioning

confidence: 99%

Air leakage paths in buildings: Typical locations and implications for the air change rate

et al. 2020

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“…Additionally, the junctions between the different envelope parts are considered using the lengths of the junctions. The main characteristics of the existing residential building stock are presented in [8,9,[18][19][20][21][22][23][10][11][12][13][14][15][16][17]. Table 1 presents the main properties and parameters of the buildings in the studied areas.…”

Section: Data About Buildingsmentioning

confidence: 99%

Quantification of Building Envelope Heat Losses on a District Level for Comparative Renovation Strategies Assessment

Arumägi,

Hallik,

Pikas

et al. 2023

J. Phys.: Conf. Ser.

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A renovation wave calls for an integrated, participatory, and neighbourhood to neighbourhood approach tailored to the local environments. This can be hindered by the lack of geometric and performance input data about the existing building stock. Depending on the Level of Detail (LOD) of buildings in national registries the calculation results for heat loss and energy performance differ. This paper aims to analyse the impact of LOD on heating energy demand (HED) and energy performance value (EPV) using existing data from the building registry and digital twin model. As a rule, compared to the calculations based on project data or to the measured energy consumption, the calculations based on the LOD building geometry overestimate the HED and EPV. When comparing different LOD, using the same building sample, the difference between heating energy demand (HED) and energy performance value (EPV) ranges from 1% to 57% and 1% to 41% (complex geometry) or from 2% to 7% and 2% to 5% (unsophisticated geometry) accordingly. The results exhibit a good correlation of the discrepancy between the difference in the shape of LOD and the building in the reality and show that the more complex the shape of the buildings, the more important it is to use highest LOD possible. Pooling the building envelope heat loss calculation on a district level improves accuracy on average allowing better assessment of comparative renovation strategies.

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“…Although empirical measurements of airtightness in historic buildings are still limited, there is enough evidence to make an estimation. For instance, the average infiltration rate of 53 historic houses from Estonia, Finland, and Sweden is 8.43 ac/h at 50 Pa [37]. In the UK, the infiltration rate of 471 homes ranged from 9.9 to 16.5 ac/h.…”

Section: Numerical Simulation and Assessment Criteriamentioning

confidence: 99%

Overheating Risks and Adaptation Strategies of Energy Retrofitted Historic Buildings under the Impact of Climate Change: Case Studies in Alpine Region

et al. 2022

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Energy retrofits can enhance the liveability and efficiency of historic buildings while preserving their historic and aesthetic values. However, measures like improved insulation and airtightness may increase their vulnerability to overheating and climate change may further worsen their performance in the future. This paper investigates indoor overheating risks brought by climate change in retrofitted historic buildings and proposes effective adaptation strategies. Firstly, local weather conditions are analysed to identify homogenous climatic zones. For each climatic zone, “a business-as-usual” emissions scenario is adopted, and most representative regional climate models are selected to obtain hourly output of future climate projection. A comparative study is adopted where typical alpine residential buildings, “Portici house”, are simulated with regard to future energy use and indoor thermal state using the dynamic model in EnergyPlus. Energy use and indoor thermal conditions are compared before and after energy retrofit, as well as under present and future climate conditions. The results demonstrate that retrofit interventions could significantly improve energy efficiency of historic buildings in both present and future scenarios. A change in climate together with retrofit interventions will, however, result in higher risk of indoor overheating in South Tyrol. Potential negative side effects of energy retrofit could be controlled by adopting adequate shading and ventilation approaches that minimise, or eliminate, the risk of overheating during high temperature periods while optimising historic buildings’ energy performance.

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Airtightness, Air Exchange and Energy Performance in Historic Residential Buildings with Different Structures

Cited by 17 publications

References 19 publications

Air leakage paths in buildings: Typical locations and implications for the air change rate

Air leakage paths in buildings: Typical locations and implications for the air change rate

Quantification of Building Envelope Heat Losses on a District Level for Comparative Renovation Strategies Assessment

Overheating Risks and Adaptation Strategies of Energy Retrofitted Historic Buildings under the Impact of Climate Change: Case Studies in Alpine Region

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