Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region

Passivhaus EnerPHit is a rigorous retrofit energy standard for buildings, based on high thermal insulation and airtightness levels, which aims to significantly reduce building energy consumption during operation. However, extra retrofit materials are required to achieve this standard, which raises a...

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Autores principales:	Chenfei Liu, Stephen Sharples, Haniyeh Mohammadpourkarbasi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Passivhaus EnerPHit standard energy retrofitting building envelope parametric analysis energy efficiency Technology T
Acceso en línea:	https://doaj.org/article/0ee6be8fa1084192b6f8e8bf2d6a9c2e
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spelling	oai:doaj.org-article:0ee6be8fa1084192b6f8e8bf2d6a9c2e2021-11-11T15:46:34ZEvaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region10.3390/en142169501996-1073https://doaj.org/article/0ee6be8fa1084192b6f8e8bf2d6a9c2e2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/6950https://doaj.org/toc/1996-1073Passivhaus EnerPHit is a rigorous retrofit energy standard for buildings, based on high thermal insulation and airtightness levels, which aims to significantly reduce building energy consumption during operation. However, extra retrofit materials are required to achieve this standard, which raises a contradiction between how to balance the environmental impacts of the retrofitting material inputs and extremely low energy consumption after retrofit. This motivated the analysis in this paper, which aimed to evaluate the possibilities of reducing the required retrofitting material inputs when trying to achieve the EnerPHit energy standard using a typical suburban dwelling in China’s hot summer–cold winter climate region as a case study. Firstly, how the insulation performance of each envelope component affected the building’s energy consumption was analysed. Based on this, sensitivity simulations of combinations of different insulation levels with different fabric components were investigated under four scenarios of insulation levels, airtightness and glazing choice. The final proposed retrofitting plans achieved the EnerPHit standard with insulation materials’ savings between 18% to 58% compared to a baseline retrofit plan, and this led, in turn, to 3.9 to 12.6 tonnes of carbon reductions. Moreover, an energy-saving of 87% in heating and 70% in cooling was achieved compared with the pre-retrofit dwelling.Chenfei LiuStephen SharplesHaniyeh MohammadpourkarbasiMDPI AGarticlePassivhaus EnerPHit standardenergy retrofittingbuilding envelopeparametric analysisenergy efficiencyTechnologyTENEnergies, Vol 14, Iss 6950, p 6950 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Passivhaus EnerPHit standard energy retrofitting building envelope parametric analysis energy efficiency Technology T
spellingShingle	Passivhaus EnerPHit standard energy retrofitting building envelope parametric analysis energy efficiency Technology T Chenfei Liu Stephen Sharples Haniyeh Mohammadpourkarbasi Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region
description	Passivhaus EnerPHit is a rigorous retrofit energy standard for buildings, based on high thermal insulation and airtightness levels, which aims to significantly reduce building energy consumption during operation. However, extra retrofit materials are required to achieve this standard, which raises a contradiction between how to balance the environmental impacts of the retrofitting material inputs and extremely low energy consumption after retrofit. This motivated the analysis in this paper, which aimed to evaluate the possibilities of reducing the required retrofitting material inputs when trying to achieve the EnerPHit energy standard using a typical suburban dwelling in China’s hot summer–cold winter climate region as a case study. Firstly, how the insulation performance of each envelope component affected the building’s energy consumption was analysed. Based on this, sensitivity simulations of combinations of different insulation levels with different fabric components were investigated under four scenarios of insulation levels, airtightness and glazing choice. The final proposed retrofitting plans achieved the EnerPHit standard with insulation materials’ savings between 18% to 58% compared to a baseline retrofit plan, and this led, in turn, to 3.9 to 12.6 tonnes of carbon reductions. Moreover, an energy-saving of 87% in heating and 70% in cooling was achieved compared with the pre-retrofit dwelling.
format	article
author	Chenfei Liu Stephen Sharples Haniyeh Mohammadpourkarbasi
author_facet	Chenfei Liu Stephen Sharples Haniyeh Mohammadpourkarbasi
author_sort	Chenfei Liu
title	Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region
title_short	Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region
title_full	Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region
title_fullStr	Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region
title_full_unstemmed	Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region
title_sort	evaluating insulation, glazing and airtightness options for passivhaus enerphit retrofitting of a dwelling in china’s hot summer–cold winter climate region
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0ee6be8fa1084192b6f8e8bf2d6a9c2e
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Evaluating Insulation, Glazing and Airtightness Options for Passivhaus EnerPHit Retrofitting of a Dwelling in China’s Hot Summer–Cold Winter Climate Region

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