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Energy Performance Evaluation of New Residential Buildings with a Low-Temperature Heating System: Results from Site Measurements and Building Energy Simulations
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
2012 (English)In: Proceedings of The Second International Conference on Building Energy and Environment, 2012Conference paper, Published paper (Other academic)
Abstract [en]

The purpose of this study was to investigate the national energy requirements of a modern, newly built residential development including four semi-detached houses in Stockholm, Sweden. The apartments were equipped with heat pumps utilising exhaust heat, resulting in a hydronic heating system adapted to low supply temperature. Ventilation radiators as combined ventilation and heating systems were installed in the two upper floors. Efficient preheating of incoming ventilation air in the ventilation radiator was an expected advantage. Under-floor heating with traditional air supply above windows was used on the ground floor. Energy consumption was calculated by IDA ICE 4, a building energy simulation (BES) program. In addition site measurements were made for comparison and validation of simulation results. Total energy consumption was monitored in the indoor temperature controlled buildings during the heating season. Our results so far indicate that total energy requirements in the buildings can be met in a satisfactory manner.

Place, publisher, year, edition, pages
2012.
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-123569OAI: oai:DiVA.org:kth-123569DiVA: diva2:627762
Conference
The Second International Conference on Building Energy and Environment, COBEE 12, Colorado, USA , August 2012
Note

QC 20130612

Available from: 2013-06-12 Created: 2013-06-12 Last updated: 2015-07-21Bibliographically 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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CiteExportLink to record
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