Domestic hot water system in residential buildings: Production, distribution and consumption energy loss. Monitoring campaign in two Danish detached houses

Anna Marszal-Pomianowska*, Rasmus Lund Jensen, Michal Pomianowski, Olena Kalyanova Larsen, Jacob Scharling Jørgensen, Sofie Sand Knudsen

*Corresponding author for this work

Research output: Contribution to journalConference article in JournalResearchpeer-review

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Abstract

The share of the energy use for domestic hot water (DHW) in the total energy consumption of buildings is becoming more and more prominent. Depending on the building typology it varies between 20% to 50% of the total energy usage for old and new built single family house, respectively. The aim of this paper is to determine the energy losses in the DHW installation with division between: a) loss at the production point, b) loss in the distribution, and c) loss at the draw-off points using the results of the measurements of DHW consumption in two single family houses connected to district heating grid. The total Eloss for the two houses vary between 17% and 26%. For House 1, the production loss accounts for 8%, the pipe loss for 15% and loss at the draw off points for 3%. Moreover, the results shown that the layout of the house, in particular the placement of the bathrooms with showers or bath tubs has significant impact on the size of the distribution losses.

Original languageEnglish
Article number012104
Book seriesJournal of Physics: Conference Series
Volume2069
Issue number1
Number of pages9
ISSN1742-6588
DOIs
Publication statusPublished - 2 Dec 2021
Event8th International Building Physics Conference, IBPC 2021 - Copenhagen, Virtual, Denmark
Duration: 25 Aug 202127 Aug 2021

Conference

Conference8th International Building Physics Conference, IBPC 2021
Country/TerritoryDenmark
CityCopenhagen, Virtual
Period25/08/202127/08/2021

Bibliographical note

Publisher Copyright:
© 2021 Institute of Physics Publishing. All rights reserved.

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