Heating and Cooling of the Supply air in Fan-assisted Natural Ventilation

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

In schools the temperature of the indoor air is one of the most important factors in terms of the indoor climate. The resulting indoor air temperature is depending on many factors; the temperature of the supply air being one of the more significant one. One fan-assisted natural ventilation system includes a supply air system where the outdoor air should be passively heated respectively cooled when passing components in the ground before it is supplied to the classrooms. The objective is to examine the ability of the supply system to transfer heat to/from the outdoor air. This has been studied by measurements of the air temperature at several measurement points in a real school building. The results show that the supply air system has an ability to heat respectively cool the outdoor air. The heat transfer results in a supply air temperature within a rather narrow interval, regardless of outdoor air temperature. The consequence of cooling hot humid air leads to high relative humidity which means that a risk for mould growth may occur which should be avoided. This must be observed and handled if designing this form of system.
Original languageEnglish
Title of host publicationAIVC, Proceedings of the 30th AIVC Conference
Number of pages6
Publication statusPublished - 2009
EventAIVC 2009, “Trends in High performance Buildings and the role of Ventilation - Berlin, Germany
Duration: 2009 Oct 12009 Oct 2

Conference

ConferenceAIVC 2009, “Trends in High performance Buildings and the role of Ventilation
Country/TerritoryGermany
CityBerlin
Period2009/10/012009/10/02

Subject classification (UKÄ)

  • Building Technologies

Keywords

  • Supply air
  • temperature
  • passive heating
  • natural ventilation

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