Status and recommendations for better implementation of ventilative cooling into Danish standards, building legislation and energy compliance tool

Christoffer Plesner, Michal Zbigniew Pomianowski

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

Abstract

Ventilative cooling (VC) is an application (distribution in time and space) of air flow rates to reduce cooling loads in spaces using outside air driven by natural, mechanical or hybrid ventilation strategies. Ventilative cooling reduces overheating in both existing and new buildings - being both a sustainable and energy efficient solution to improve indoor thermal comfort. In new buildings VC, may save cooling energy and thereby make it easier to fulfil future energy legislation for buildings. VC is an important topic supported by the International Energy Agency (IEA) - where the IEA Annex 62 has had a special focus on this area.

Low energy buildings are highly insulated and airtight and therefore subject to overheating risks, where VC might be a relevant solution. One of the tasks of IEA Annex 62 has been to evaluate the current status and make recommendations for better implementation of VC in future standards, legislation and compliance tools for 11 different countries, incl. e.g. Denmark, Italy and Japan.

The purpose of this paper is to evaluate how well ventilative cooling is currently integrated into Danish national standards, legislation and compliance tools and thereby make future recommendations based on this.

The approach is to evaluate to which extent certain ventilative cooling parameters are integrated into Danish standards, legislation and compliance tools through questionnaires asking if e.g. cross ventilation is included, which calculation time step is used for thermal comfort and if the position of windows is taken into account. Based on the answers from the questionnaire a concise status was established for Denmark, conclusions were drawn and thereafter concrete recommendations were given.

The Authors hope that the recommendations found throughout the IEA Annex 62 activities will help and inspire policy makers, regulators and experts to improve future standards, legislations and compliance tools and better address natural ventilative cooling.

Results show that ventilative cooling is not explicitly addressed in Danish building legislation nor national standards. There is presently, among others, lack of information on how to use windows, night cooling possibilities, window control and automation. In Danish building legislation and compliance tool, design air flows are specified by the designer as fixed air flow rates split up into winter and summer operation. In reality air flow rates, especially from natural ventilation, are seldom or never constant and a recommendation could be to allow the possibility for variable air flow rates. The recommendation for better implementation of ventilative cooling in Danish standards could be to have more “design specific” standards providing guidance on how to achieve well-functioning ventilative cooling systems reducing overheating in buildings. The concrete recommendations should give inspiration to regulators when making future revisions of standards, legislation and compliance tools.
Original languageEnglish
Title of host publicationProceedings of the 39th AIVC Conference, 7th TightVent Conference and 5th venticool Conference : Smart Ventilation for buildings
Place of PublicationAntibes Juan-Les-Pins, France
Publication date2018
Pages262-271
Publication statusPublished - 2018
Event39th AIVC Conference: "Smart ventilation for buildings" - Antibes Juan-Les-Pins, France
Duration: 18 Sep 201819 Sep 2018
Conference number: 39
http://aivc2018conference.org/

Conference

Conference39th AIVC Conference: "Smart ventilation for buildings"
Number39
CountryFrance
CityAntibes Juan-Les-Pins
Period18/09/201819/09/2018
Internet address

Fingerprint

Cooling
Air
Flow rate
Ventilation
Thermal comfort
Compliance
Cooling systems
Automation

Keywords

  • Ventilative cooling
  • Standards
  • Legislation
  • Compliance tools
  • Recommendations

Cite this

Plesner, C., & Pomianowski, M. Z. (2018). Status and recommendations for better implementation of ventilative cooling into Danish standards, building legislation and energy compliance tool. In Proceedings of the 39th AIVC Conference, 7th TightVent Conference and 5th venticool Conference: Smart Ventilation for buildings (pp. 262-271). Antibes Juan-Les-Pins, France.
Plesner, Christoffer ; Pomianowski, Michal Zbigniew. / Status and recommendations for better implementation of ventilative cooling into Danish standards, building legislation and energy compliance tool. Proceedings of the 39th AIVC Conference, 7th TightVent Conference and 5th venticool Conference: Smart Ventilation for buildings. Antibes Juan-Les-Pins, France, 2018. pp. 262-271
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Plesner, C & Pomianowski, MZ 2018, Status and recommendations for better implementation of ventilative cooling into Danish standards, building legislation and energy compliance tool. in Proceedings of the 39th AIVC Conference, 7th TightVent Conference and 5th venticool Conference: Smart Ventilation for buildings. Antibes Juan-Les-Pins, France, pp. 262-271, 39th AIVC Conference: "Smart ventilation for buildings", Antibes Juan-Les-Pins, France, 18/09/2018.

Status and recommendations for better implementation of ventilative cooling into Danish standards, building legislation and energy compliance tool. / Plesner, Christoffer; Pomianowski, Michal Zbigniew.

Proceedings of the 39th AIVC Conference, 7th TightVent Conference and 5th venticool Conference: Smart Ventilation for buildings. Antibes Juan-Les-Pins, France, 2018. p. 262-271.

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

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Plesner C, Pomianowski MZ. Status and recommendations for better implementation of ventilative cooling into Danish standards, building legislation and energy compliance tool. In Proceedings of the 39th AIVC Conference, 7th TightVent Conference and 5th venticool Conference: Smart Ventilation for buildings. Antibes Juan-Les-Pins, France. 2018. p. 262-271