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Comparative effects of building envelope improvements and occupant behavioural changes on the exergy consumption for heating and cooling

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  • Schweiker, Marcel
  • Shukuya, Masanori
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    Abstract

    Much focus is put on measures to improve the building envelope system performance to reduce the impact of the building sector on the global environmental degradation. This paper compares the potential of building envelope improvements to those of a change in the occupant's behavioural pattern. Three cases of improvements together with a base case were analysed using exergy analysis, because the exergy concept is useful to understand the underlying processes and the necessary adjustments to the calculation of the heat-pump system. The assumptions for the occupant behaviour were set up based on our field measurements conducted in a dormitory building and the calculation was for steady-state conditions. It was found that the potential of occupant behavioural changes for the reduction in exergy consumption is more affected by the outdoor temperature compared to building envelope improvements. The influence of occupant behaviour was highly significant (more than 90% decrease of exergy consumption) when the temperature difference between indoors and outdoors is small, which is the case for long periods in regions with moderate temperatures during summer and/or winter. Nevertheless, both measures combined lead to a reduction from 76% up to 95% depending on the outside conditions and should be the final goal.

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    Bibliographic Info

    Article provided by Elsevier in its journal Energy Policy.

    Volume (Year): 38 (2010)
    Issue (Month): 6 (June)
    Pages: 2976-2986

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    Handle: RePEc:eee:enepol:v:38:y:2010:i:6:p:2976-2986

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    Web page: http://www.elsevier.com/locate/enpol

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    Keywords: Occupant behaviour Building envelope system Exergy/energy analysis;

    References

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    1. Dincer, Ibrahim, 2002. "The role of exergy in energy policy making," Energy Policy, Elsevier, Elsevier, vol. 30(2), pages 137-149, January.
    2. Steg, Linda, 2008. "Promoting household energy conservation," Energy Policy, Elsevier, Elsevier, vol. 36(12), pages 4449-4453, December.
    3. Owens, Susan & Driffill, Louise, 2008. "How to change attitudes and behaviours in the context of energy," Energy Policy, Elsevier, Elsevier, vol. 36(12), pages 4412-4418, December.
    4. Rosen, Marc A. & Dincer, Ibrahim & Kanoglu, Mehmet, 2008. "Role of exergy in increasing efficiency and sustainability and reducing environmental impact," Energy Policy, Elsevier, Elsevier, vol. 36(1), pages 128-137, January.
    5. Faiers, Adam & Cook, Matt & Neame, Charles, 2007. "Towards a contemporary approach for understanding consumer behaviour in the context of domestic energy use," Energy Policy, Elsevier, Elsevier, vol. 35(8), pages 4381-4390, August.
    6. Kondo, Kumiko, 2009. "Energy and exergy utilization efficiencies in the Japanese residential/commercial sectors," Energy Policy, Elsevier, Elsevier, vol. 37(9), pages 3475-3483, September.
    7. Roberts, Simon, 2008. "Altering existing buildings in the UK," Energy Policy, Elsevier, Elsevier, vol. 36(12), pages 4482-4486, December.
    8. Gyberg, Per & Palm, Jenny, 2009. "Influencing households' energy behaviour--how is this done and on what premises?," Energy Policy, Elsevier, Elsevier, vol. 37(7), pages 2807-2813, July.
    9. Utlu, Zafer & Hepbasli, Arif, 2006. "Estimating the energy and exergy utilization efficiencies for the residential-commercial sector: an application," Energy Policy, Elsevier, Elsevier, vol. 34(10), pages 1097-1105, July.
    10. Bahaj, A.S. & James, P.A.B., 2007. "Urban energy generation: The added value of photovoltaics in social housing," Renewable and Sustainable Energy Reviews, Elsevier, Elsevier, vol. 11(9), pages 2121-2136, December.
    11. Linden, Anna-Lisa & Carlsson-Kanyama, Annika & Eriksson, Bjorn, 2006. "Efficient and inefficient aspects of residential energy behaviour: What are the policy instruments for change?," Energy Policy, Elsevier, Elsevier, vol. 34(14), pages 1918-1927, September.
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    Cited by:
    1. Rae, Callum & Bradley, Fiona, 2012. "Energy autonomy in sustainable communities—A review of key issues," Renewable and Sustainable Energy Reviews, Elsevier, Elsevier, vol. 16(9), pages 6497-6506.

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