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Applying International Guidelines on Historic Building’s Retrofit in New Zealand: A Critical Context View
Article

Energy Efficiency Measures Applied to Heritage Retrofit Buildings: A Simulated Student Housing Case Study in Vienna

1
Thermodynamics Laboratory, Aerospace and Mechanical Engineering Department, Faculty of Applied Sciences, Université de Liège, 4000 Liège, Belgium
2
Faculty of Engineering and Architectural Science, Ryerson University, Toronto, ON M5B 2K3, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: Tor Broström
Heritage 2021, 4(4), 3919-3937; https://doi.org/10.3390/heritage4040215
Received: 10 September 2021 / Revised: 18 October 2021 / Accepted: 19 October 2021 / Published: 22 October 2021
(This article belongs to the Special Issue Energy Efficiency in Historic Buildings)
One pavilion was selected for deep retrofitting from the Otto Wagner area situated in the west of Vienna. The retrofitting process involves sustainable and energy-efficient construction to improve the energy performance and energy production potential of the building while preserving the cultural heritage and significance. This four-story pavilion was re-designed according to the proposed regulations of a net positive energy university building to become a student residence. Architectural, building envelope, and engineering interventions along with various changes were simulated through the Sefaira tool in the SketchUp model. These included: optimization of the U-values of the roof, walls, and floor; the addition of different layers of sustainable energy-efficient insulation materials to decrease the overall energy demand. The specific energy demands for heating, cooling, and lighting were decreased in the proposed model to reduce the total energy use intensity from 248.9 kWh/(m2 year) to 54.3 kWh/(m2 year) resulting in a 78.2% reduction. The main goal of this study is to try and achieve a net positive energy status building as part of the Otto Wagner area by improving the building envelope and integrating renewable energies. A total of 22.5% of the annual energy consumption was generated by the designed PV system. The selected building achieved the passive house standards in Austria by optimizing the energy performance with the proposed energy efficiency measures. View Full-Text
Keywords: low energy buildings; energy efficiency; sustainable materials; renewable energies; heating demand; historical retrofit; historical preservation; integrated design process low energy buildings; energy efficiency; sustainable materials; renewable energies; heating demand; historical retrofit; historical preservation; integrated design process
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MDPI and ACS Style

Elnagar, E.; Munde, S.; Lemort, V. Energy Efficiency Measures Applied to Heritage Retrofit Buildings: A Simulated Student Housing Case Study in Vienna. Heritage 2021, 4, 3919-3937. https://doi.org/10.3390/heritage4040215

AMA Style

Elnagar E, Munde S, Lemort V. Energy Efficiency Measures Applied to Heritage Retrofit Buildings: A Simulated Student Housing Case Study in Vienna. Heritage. 2021; 4(4):3919-3937. https://doi.org/10.3390/heritage4040215

Chicago/Turabian Style

Elnagar, Essam, Simran Munde, and Vincent Lemort. 2021. "Energy Efficiency Measures Applied to Heritage Retrofit Buildings: A Simulated Student Housing Case Study in Vienna" Heritage 4, no. 4: 3919-3937. https://doi.org/10.3390/heritage4040215

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