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Buildings 2018, 8(2), 23; https://doi.org/10.3390/buildings8020023

The Impact of Insulation and HVAC Degradation on Overall Building Energy Performance: A Case Study

1
Department of Process Sciences, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
2
ECOGLOBE GmbH, Bismarckstraße 10-12, 10625 Berlin, Germany
3
NTNU Norwegian University of Science and Technology, Department of Civil and Environmental Engineering, Høgskoleringen 1, 7491 Trondheim, Norway
*
Author to whom correspondence should be addressed.
Received: 30 December 2017 / Revised: 24 January 2018 / Accepted: 29 January 2018 / Published: 2 February 2018
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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. View Full-Text
Keywords: building ageing; energy performance simulation; efficiency; degradation; deterioration; decline building ageing; energy performance simulation; efficiency; degradation; deterioration; decline
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Eleftheriadis, G.; Hamdy, M. The Impact of Insulation and HVAC Degradation on Overall Building Energy Performance: A Case Study. Buildings 2018, 8, 23.

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