Modeling the influence of district heating systems on drinking water temperatures in domestic drinking water systems within domestic properties

Conference paper (2021)

Authors

Bram Hillebrand KWR Water Research Institute
E.J.M. Blokker KWR Water Research Institute, Sanitary Engineering - CEG
Research Group
Sanitary Engineering (CEG) (TU Delft)
Copyright: © 2021 Bram Hillebrand, E.J.M. Blokker
DOI: https://doi.org/10.1061/9780784483466.088
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Published Date

2021

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Water Management

Research Group

Sanitary Engineering

Abstract

In this research, we investigated the influence of the heating of drinking water in the connection pipe under the influence of nearby district heating and the effect this has on water temperatures throughout the domestic drinking water system (DDWS) of a typical Dutch domestic property. We found that stagnant water in the connection pipe warms up fast, reaching the surrounding ground temperature in about 15 min, and these temperatures can be found throughout the house at taps such as the shower and the kitchen tap. Flowing water in the connection pipe is also, depending on the pipe length, heated up several degrees. The prevention of high temperatures in the soil around the connection pipe is the best measure to prevent high drinking water temperatures at the taps.

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