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Energy Efficiency in Historic Buildings : Postprints from the Conference : Visby, February 9–11, 2011
- 2012
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Proceedings (redaktörskap) (övrigt vetenskapligt/konstnärligt)abstract
- Energy efficiency is an issue that brings the trade-off between aspects of use and preservation to a head. On the one hand, interventions for energy efficiency facilitate long-term use by reducing operating costs; on the other hand, the interventions may have both a physical and a visual impact on the cultural heritage value and the fabric of the building. In order to promote a sustainable use and preservation of historic buildings, The Swedish Energy Agency instituted a National Research Program for Energy Efficiency in HistoricBuildings. The first stage of the program ranfrom 2007 to 2010 with a total budget of around 4 million Euro. Additional funding was provided by the Church of Sweden and the NationalHeritage Board. There were fifteen projects involving some thirty researchers from different Swedish universities and research institutes. To mark the end of the first stage of the national research program the international conference Energy Efficiency in Historic Buildings was held in Visby in February 2011. Most of the projects within the program were presented at the conference and international key-note speakers were invited to each session, giving a total of 24 papers. More than one hundred participants, representing ten countries, participated in the conference.
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| 2. |
- Broström, Tor, et al.
(författare)
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Climate Control in Churches in Northern Sweden
- 2009
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Ingår i: Proceedings Cold Climate HVAC Sisimiut, Greenland, 16-19 March 2009.
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Konferensbidrag (refereegranskat)abstract
- In the extreme north of Sweden, the indoor climate and energy performance of 50 churches is being monitored in order to improve energy efficiency and to improve the indoor climate with respect to the preservation. The objective of the present paper is to investigate if and how both indoor climate and energy efficiency can be improved through better climate control. Three cases were chosen to study churches with no heating, permanent heating and intermittent heating. In each case the actual indoor climate was compared to climate criteria for preservation to determine the consequences in terms of climate control. The results show that there is a conflict between the climate criteria for preservation and the present use of the churches that cannot be resolved by technical solutions only. In order to come up with reasonable compromise research is needed on climate criteria and risk management at extremely low ranges of RH.
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| 3. |
- Broström, Tor, et al.
(författare)
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Convective heating in a medieval church : Effects of air-to-air heat pumps on air movements, particle deposition and temperature distribution
- 2009
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Ingår i: Proceedings of the 11th International Conference on Air Distribution in Rooms (Roomvent) 2009, Busan, Korea.
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Konferensbidrag (refereegranskat)abstract
- In Europe many historic buildings use direct electric heating. Air-to-air heat pumps are an interesting alternative, in particular for conservation heating. However, the convective heating may accelerate soiling of walls and artefacts by increasing the velocity and turbulence. The objective of the present paper is to discuss the general problem, the methodology for studying air motions and temperature distribution, and to present the results from a case study where air-to-air heat pumps and bench heaters were used for heating in a medieval church. The temperatures, velocities and humidity in the church have been measured for four different heating modes. The present study does not indicate any major disadvantages of using heat pumps for background heating in stone churches of the studied kind. More detailed long term studies are needed to ascertain the effects over time.
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| 4. |
- Broström, Tor
(författare)
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Preventive conservation by climate control in historic buildings
- 2008
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Ingår i: Preservation and conservation in 21st century : knowledge, challenge, attitude. - Talinn : Conservation Centre Kanut. - 9789949157310 ; , s. 56-59
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Bokkapitel (refereegranskat)abstract
- This paper shows how we can work step by step to design appropriate climate control systems. We know enough about climate specifications to reduce risks significantly. The specifications for preservation should be wheighed against other factors in a risk assessment, methods used in museums need to be adapted for this purpose. A climate analysis will give the basic conditions for climate control. A climate control strategy should use a combination of passive control, ventilation, heating and humidity control to achieve the desired indoor climate at low cost and with minimal impact on the building.
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| 5. |
- Broström, Tor, et al.
(författare)
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Solar energy and cultural-heritage values
- 2011
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Ingår i: World Renewable Energy Conference, Linköping, May 2011. - Linköping : Linköping University Electronic Press. - 9789173930703 ; , s. 2034-2040
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Konferensbidrag (refereegranskat)abstract
- The use of solar energy in a building of cultural-heritage value is an issue that brings the trade-off between aspects of use and preservation to a head. A sustainable use and preservation of historic buildings requires broad and long term compromises between social, economic and environmental aspects. The objective of the present paper is to present and discuss a decision framework for such compromises regarding the use of solar energy in historic buildings.
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| 6. |
- Klenz Larsen, Poul, et al.
(författare)
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Climate control in historic buildings in Denmark
- 2011
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Konferensbidrag (refereegranskat)abstract
- In many historic buildings, conservation heating has been used to control the RH in winter. Heat pumps are much more energy efficient than direct electric heating, so this technology may be adapted for climate control. Dehumidification has not been regarded as appropriate for historic buildings due to poor regulation, but recent development in electronic hygrostats makes this technology an attractive alternative. The annual energy consumption for both control strategies was calculated from statistical meteorological data for Denmark. The most energy efficient control strategy is determined by the U-value of the building, the air exchange rate and the volume. For large buildings conservation heating with heat pump technology seems to be the most energy efficient, unless the thermal insulation is very poor. For small buildings dehumidification is more efficient unless the building is very leaky. The two strategies for climate control were tested in historic houses owned by the National Museum in Denmark and used for exhibition only in the summer season. Kommandørgården has an uncontrolled climate in summer due to open doors in the opening hours. In winter the RH is controlled to 60-70% by hygrostatic heating. Liselund is an 18th century mansion located in a romantic garden on the island Møn at the Baltic Sea. The house is open only for guided tours in the summer, and the RH is controlled all year by dehumidification.
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| 7. |
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