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Milić, Vlatko and Amiri, Shahnaz and Moshfegh, Bahram (2020) A Systematic Approach to Predict the Economic and Environmental Effects of the Cost-Optimal Energy Renovation of a Historic Building District on the District Heating System. Energies, 13 (1). ISSN 1996-1073


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The economic and environmental performance of a district heating (DH) system is to a great extent affected by the size and dynamic behavior of the DH load. By implementing energy efficiency measures (EEMs) to increase a buildings thermal performance and by performing cost-optimal energy renovation, the operation of the DH system will be altered. This study presents a systematic approach consisting of building categorization, life cycle cost (LCC) optimization, building energy simulation and energy system optimization procedures, investigating the profitability and environmental performance of cost-optimal energy renovation of a historic building district on the DH system. The results show that the proposed approach can successfully be used to predict the economic and environmental effects of cost-optimal energy renovation of a building district on the local DH system. The results revealed that the financial gains of the district are between 186 MSEK (23%) and 218 MSEK (27%) and the financial losses for the DH system vary between 117-194 MSEK (5-8%). However, the suggested renovation measures decrease the local and global CO2 emissions by 71-75 metric ton of CO2eq./year (4%) and 3545-3727 metric ton of CO2eq./year (41-43%), respectively. Total primary energy use was decreased from 57.2 GWh/year to 52.0-52.2 GWh/year.

Item Type: Article
Uncontrolled Keywords: LCC optimization; building energy simulation; energy system optimization; energy renovation; historic building district; district heating system
Subjects: English
English > Simulation
Depositing User: Susanna Carlsten
Date Deposited: 02 Dec 2020 08:43
Last Modified: 02 Dec 2020 08:43

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