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Main Title: The Impact of Insulation and HVAC Degradation on Overall Building Energy Performance: A Case Study
Author(s): Eleftheriadis, Georgios
Hamdy, Mohamed
Type: Article
Language Code: en
Abstract: Through monitoring of buildings, it can be proven that the performance of envelope elements and energy supply systems deteriorates with time. The results of this degradation are higher energy consumption and life cycle costs than projected in the building design phase. This paper considers the impacts of this deterioration on the whole building energy performance with the goal of improving the accuracy of long term performance calculations. To achieve that, simplified degradation equations found in literature are applied on selected envelope elements and heating system components of a single-family house in Germany. The energy performance of the building over 20 years is determined through simulations by EnergyPlus and MATLAB. The simulation results show that, depending on maintenance and primary heating system, the building can consume between 18.4% and 47.1% more primary energy over 20 years compared to a scenario in which no degradation were to occur. Thus, it can be concluded that considering performance drop with time is key in order to improve the decision-making process when designing future-proof buildings.
Issue Date: 2-Feb-2018
Date Available: 22-Aug-2019
DDC Class: 720 Architektur
Subject(s): building ageing
energy performance simulation
Journal Title: Buildings
Publisher: MDPI
Publisher Place: Basel
Volume: 8
Issue: 2
Article Number: 23
Publisher DOI: 10.3390/buildings8020023
EISSN: 2075-5309
Appears in Collections:Inst. Energietechnik » Publications

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