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Demand Controlled Ventilation in a Combined Ventilation and Radiator System
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Fluid and Climate Technology.ORCID iD: 0000-0001-8614-5806
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Fluid and Climate Technology.ORCID iD: 0000-0003-1882-3833
2013 (English)In: Proceedings of International Conference CLIMA 13, 2013Conference paper, Published paper (Other academic)
Abstract [en]

With growing concerns for efficient and sustainable energy treatment in buildings there is a need for balanced and intelligent ventilation solutions. This paper presents a strategy for demand controlled ventilation with ventilation radiators, a combined heating and ventilation system. The ventilation rate was decreased from normal requirements (per floor area) of 0.375 l·s-1·m-2 to 0.100 l·s-1·m-2 when the residence building was un-occupied. The energy saving potential due to decreased ventilation and fan power was analyzed by IDA Indoor Climate and Energy 4 (ICE) simulation program. The result showed that 16 % of the original energy consumption for space and ventilation heating could be saved by utilizing ventilation on demand.

Place, publisher, year, edition, pages
2013.
Keyword [en]
Controlled ventilation system, Energy performance, IDA ICE 4, Variable air volume
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-123570OAI: oai:DiVA.org:kth-123570DiVA: diva2:627764
Conference
The 11 th REHVA World Congress and 8 th International Conference on IAQVEC,Prague, Czech Republic , June 2013
Note

QC 20130612

Available from: 2013-06-12 Created: 2013-06-12 Last updated: 2015-07-20Bibliographically approved
In thesis
1. Energy and Indoor Environment in New Buildings with Low-Temperature Heating System
Open this publication in new window or tab >>Energy and Indoor Environment in New Buildings with Low-Temperature Heating System
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The aim of this thesis was to evaluate new buildings with low-temperature heating systems in terms of energy consumption and thermal comfort, and to pay some attention to energy savings and indoor air quality. To reach this aim, on-site measurements as well as building energy simulations using IDA Indoor Climate and Energy (ICE) 4 were performed. Results show that the investigated buildings with low-temperature heating system could meet the energy requirements of Swedish regulations in BBR (Boverkets byggregler), as well as provide a good level of thermal comfort. Implementing variable air volume ventilation instead of constant flow, i.e. decreasing the ventilation air from 0.35 to 0.10 l·s-1·m-2 during the whole unoccupancy (10 hours), gave up to 23 % energy savings for heating the ventilation air. However, the indoor air quality was not acceptable because VOC (volatile organic compound) concentration was slightly above the acceptable range for one hour after occupants arrive home. So, in order to create acceptable indoor air quality a return back to the normal ventilation requirements was suggested to take place two hours before the home was occupied. This gave 20 % savings for ventilation heating. The results of this study are in line with the European Union 20-20-20 goal to increase the efficiency of buildings by 20 % to the year 2020.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. 22 p.
National Category
Engineering and Technology Building Technologies
Identifiers
urn:nbn:se:kth:diva-123566 (URN)978-91-7501-783-9 (ISBN)
Presentation
2013-06-14, Sal B 26, Brinellvägen 23, KTH, Stockholm, 14:00 (English)
Opponent
Supervisors
Note

QC 20130612

Available from: 2013-06-12 Created: 2013-06-12 Last updated: 2013-06-12Bibliographically approved

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