Domestic hot water systems in well-insulated residential buildings: A comparative simulation study on efficiency and hygiene challenges

Christopher Graf, Peter Pärisch, Anna Marszal-Pomianowska, Martin Frandsen, Bernd Bendinger and Anna Cadenbach

Energy, 2024, vol. 313, issue C

Abstract: Domestic hot water (DHW) is essential for daily life, yet the production can be energy intensive. Advances in building insulation reduced space heating demand, while DHW energy demand remained constant or even increased. The need for a higher proportion of renewable heat amplifies the conflict in DHW systems between energy efficiency, hygiene, and comfort, since high temperatures are required for hygienic purposes. Thus, developing DHW systems efficiently utilising renewable heat without excessive temperature requirements is essential.

Keywords: Domestic hot water; Low-temperature heating; Energy efficiency; Building simulation; Renewable energy; Hygiene (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:313:y:2024:i:c:s0360544224033656

DOI: 10.1016/j.energy.2024.133587

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