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

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

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.

Suggested Citation

  • Graf, Christopher & Pärisch, Peter & Marszal-Pomianowska, Anna & Frandsen, Martin & Bendinger, Bernd & Cadenbach, Anna, 2024. "Domestic hot water systems in well-insulated residential buildings: A comparative simulation study on efficiency and hygiene challenges," Energy, Elsevier, vol. 313(C).
    • Handle: RePEc:eee:energy:v:313:y:2024:i:c:s0360544224033656
    DOI: 10.1016/j.energy.2024.133587
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    References listed on IDEAS

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