Housing Innovation Showcase 2012: Building Performance Evaluation, Phase 1-Part 1

Currie, John; Williamson, Julio Bros; Stinson, Jon

doi:10.14297/enr.2013.000001

Cited by 2 publications

(4 citation statements)

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“…The examination of vapour levels indicated that they fall within the ideal comfort range (with a few exclusions monitored within the extended range), contradicting the residents' opinion of the air being humid. The Passivhaus occupants also reported not experiencing any odours, which could be attributed to the proper maintenance of ventilation systems and filters, as indicated in a previous report [34].…”

Section: Indoor Air Quality Perceptionsupporting

confidence: 71%

“…Three monitors were installed in each room to minimise this impact, providing data corroboration. Thirdly, this study did not focus on collecting ventilation flow rates of the homes; it was assumed that the air flows were those provided by a previous report [34], which also reviewed the MVHR efficiency. Hence, this study lacks an assessment according to the ASHRAE 62.2-2022 standard, as it is based mostly on air flow rates in residential buildings.…”

Section: Study Limitationsmentioning

confidence: 99%

“…Finally, this paper discusses the results in the UK and Scottish context and discusses the impact that the new building regulation in Scotland could have on IAQ. This work focuses on the IAQ, as the dwellings' energy performances are discussed elsewhere [34].…”

Section: Introductionmentioning

confidence: 99%

“…Main building characteristics of the control, gold and Passivhaus homes. Source: Authors, with data taken from[34].…”

mentioning

confidence: 99%

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Indoor Air Quality and Thermal Environment Assessment of Scottish Homes with Different Building Fabrics

et al. 2023

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The ongoing climate change and policies around it are changing how we design and build homes to meet national carbon emission targets. Some countries such as Scotland are adopting higher-energy-efficient buildings as minimum requirements in the building regulations. While net zero homes might be more energy-efficient and emit fewer operational carbon emissions, we have yet to fully understand the influence on the indoor environment, particularly on indoor air quality (IAQ) and thermal comfort. This study compares the IAQ of three homes in Scotland with equal internal layouts and designs but different building fabrics. The homes represent the minimum Scottish building regulations (2015), the Passivhaus standard and the Scottish ‘Gold Standard’. Temperature, relative humidity, PM2.5 and total volatile organic compounds (tVOC) were measured at five-minute intervals for seven months and compared to occupants’ subjective responses to the IAQ. All three homes had temperatures above the recommended thresholds for overheating. Measured hygrothermal conditions were within the ideal range 66.4% of the time in the Passivhaus, 56.4% in the Gold Standard home and 62.7% in the control home. Measured IAQ was better in homes with higher energy efficiency, particularly tVOC. For instance, indoor PM2.5 in the Passivhaus were 78.0% of the time below the threshold, while in the standard home the figure was 51.5%, with a weak correlation with outdoor PM2.5 (Passivhaus: B rs = 0.167, K rs = 0.306 and L rs = 0.163 (p < 0.001); Gold: B rs = −0.157, K rs = 0.322 and L rs = 0.340 (p < 0.001); Control: B rs = −0.111, K rs = 0.235 and L rs = 0.235 (p < 0.001)). TVOCs in the Passivhaus were 81.3%, while in the control home they were 55.0%. While the results cannot be generalised, due to the small sample, this study has significant policy implications, particularly in Scotland, exhibiting the importance of IAQ in current building legislation and sustainable assessment methods.

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Section: Indoor Air Quality Perceptionsupporting

confidence: 71%

Section: Study Limitationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Main building characteristics of the control, gold and Passivhaus homes. Source: Authors, with data taken from[34].…”

mentioning

confidence: 99%

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Indoor Air Quality and Thermal Environment Assessment of Scottish Homes with Different Building Fabrics

et al. 2023

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A longitudinal building fabric and energy performance analysis of two homes built to different energy principles

Bros-Williamson

Garnier

Currie

2016

Energy and Buildings

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This paper reports on the building performance monitoring and annual energy demand of two homes built side-by-side over an occupancy period of three years. The study compares the results from on-site monitoring against the assumed parameters and calculations from compliance modelling at design stage. It focuses on the differences and impact of occupancy behaviour, weather conditions, quality of construction and operation which contribute to an increase in energy consumption creating a gap in performance between design and actual.The results from the study show disparities in the fabric performance reflecting on the overall consumption of energy. This longitudinal analysis highlights how building performance needs to be evaluated over longer periods in order to fully understand how homes and their occupants operate and consume energy. The impact of the real performance of homes in Scotland over longer periods needs to become standardised, and a mechanism for feedback into regulatory mechanisms and construction practices applied, if carbon emission targets are to be met.

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Housing Innovation Showcase 2012: Building Performance Evaluation, Phase 1-Part 1

Cited by 2 publications

References 0 publications

Indoor Air Quality and Thermal Environment Assessment of Scottish Homes with Different Building Fabrics

Indoor Air Quality and Thermal Environment Assessment of Scottish Homes with Different Building Fabrics

A longitudinal building fabric and energy performance analysis of two homes built to different energy principles

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