Potential Use of Radiant Walls to Transfer Energy Between two Building Zones

Jerome Le Dreau, Per Heiselberg

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review


Due to a reduced energy demand in low energy buildings, low temperature heating and high temperature cooling can be used to control thermal comfort. Nevertheless, highly varying heat loads due to solar radiation can create sometimes an imbalanced energy demand inside the building. Instead of being considered as a disturbance, this asymmetry can be used as a heat source for another zone of the building. By means of computer simulations, the possibility of shifting the energy demand between two office rooms with different thermal loads has been studied. Due to the small temperature difference between the two zones, capillary tubes embedded in the surface of walls are used to exchange heat from a south-facing room to a north-facing room. In addition to having a better indoor climate, the total heating and cooling consumption decreases when running the system. A comparison has also been performed with a system exchanging room air directly.
Original languageEnglish
Title of host publicationProceedings of ISHVAC 2011
EditorsZhang Xu, Gao Naiping, Xiang Zhou, Li Zhengrong
Number of pages7
PublisherTsinghua University
Publication date2011
ISBN (Electronic)978-962-85138-0-2
Publication statusPublished - 2011
EventInternational Symposium on Heating, Ventilation and Air Conditioning - Shanghai, China
Duration: 6 Nov 20119 Nov 2011
Conference number: 7


ConferenceInternational Symposium on Heating, Ventilation and Air Conditioning


  • Capillary Pipes
  • Interzonal Heat Transfer
  • Radiant Cooling
  • Solar Radiation
  • Air Exchange

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