Evaluation of the Indoor Environment of Comfort Houses: Qualitative and Quantitative Approaches

Abstract

Currently, the built environment accounts for about 40% of the total energy consumed in the European Union and this level is continuing to increase. This high level of energy consumption is partially a result of attempts to create an optimum indoor environment for the occupants of buildings. New buildings and renovation projects on existing buildings need to improve their energy performance while maintaining a good and healthy indoor environment. One way of saving energy is to build passive houses. This paper presents the results of a case study of some of the first certified passive houses in Denmark, called Comfort Houses. The indoor environment is evaluated using both quantitative measurements of these houses and qualitative interviews with the occupants about their experiences of the indoor environment. The combination of these two sets of knowledge leads to a more complete and holistic picture of the indoor environment. It is shown that attention needs to be paid to the objectives in the design process, the documentation of the designs and on the occupant’s lifestyle and behaviour. Finally, it is important to educate the occupants on how to live in an appropriate manner to achieve a comfortable indoor environment.

Keywords

Indoor environment Thermal comfort Passive houses Comfort houses IAQ lighting quality Acoustic quality

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References

Directive 2002/91/EC of the European Parliament: 16 December 2002. The energy consumption of buildings.

The Passive House Institute http://www.passiv.de/07_eng/index_e.html (accessed 12 September 2007).

The Comfort Houses, Saint-Gobain Isover Scandinavia. http://www.komforthusene.dk/ (accessed 1 November 20010).

Saint-Gobain Isover Scandinavia Komfort Husene – erfaring, viden og inspiration (The Comfort Houses – experiences, knowledge and inspiration). First ed. Vamdrup, Denmark: Saint-Gobain Isover a/s, 2010.

Brunsgaard

. Interviewrapport om designprocesserne bag Komfort Husene (Interview report about the design processes behind the Comfort Houses). DCE technical report no. 77, Institut for Byggeri og Anlæg, Aalborg Universitet, Denmark, 2009.

Bryman

: Social research methods, Third ed. Oxford, Oxford University Press, 2008, pp. 587–626.

Tashakkori

Teddlie

: Foundations of mixed methods research: integrating quantitative and qualitative approaches in the social and behavioral sciences. Thousand Oaks, CA: Sage Publications, 2009.

Bryman

: Integrating qualitative and quantitative research: how is it done? Qualitat Res 2006;6:97–113.

Jaffari

Matthews

: From occupying to inhabiting – a change in conceptualising comfort. IOP Conference Series: Earth and Environmental Science 2009, http://iopscience.iop.org/1755-1315/8/1 (accessed 26 July 2010).

10.

Aizlewood

Dimitroulopoulou

: The HOPE project: the UK experience. Indoor Built Environ 2006;15(5):393–409.

11.

DS/EN/CR 1752: 2001. Ventilation i bygninger – projekteringskriterier for indeklimaet (Ventilation in buildings – planning criteria of the indoor environment).

12.

EN 15251: 2007. Indoor environmental parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics.

13.

Energi styrelsen, The Danish building regulations - BR08, http://www.deaca.dk/ (accessed 23 January 2010).

14.

SBi-anvisning 219: 2009. Dagslys i rum og bygninger.

15.

DS 490:2007. Lydklassifikation af boliger (Classification of sound in housing).

16.

Kvale

. InterView: en introduktion til det kvalitative forskningsinterview. Hans Reitzel, Copenhagen 1997.

17.

DS418: 2002. Beregning af bygningers varmetab (Calculation of heat loss from buildings).

18.

Madsen

Kristensen

. Dagslys som byggestof i det 20. århundrede (Daylight as building material in the 20th century), http://www.lysnet.com/download/DagslysSomByggestof.pdf (accessed 04 October 2010).

19.

Brunsgaard

Knudstrup

Heiselberg

: The first “Comfort Houses” in Denmark: experiences of different design processes. PLEA 2009: architecture energy and the occupant's perspective. In: The 26th international conference on passive and low energy architecture, Université LAVAL, Québec, Canada. 22–24 June 2009, pp. 860–865.

20.

Valbjørn

(ed.): Indeklimahåndbogen. SBi-anvisning 196, Statens byggeforskningsinstitut, Denmark, 2000.

21.

Larsen

: Vurdering af indeklimaet i hidtidigt lavenergibyggeri: med henblik på forbedringer i fremtidens lavenergibyggeri. DCE contract report no. 100, Institut for Byggeri og Anlæg, Aalborg Universitet, Denmark, 2011.

22.

Bluyssen

: Management of the indoor environment: from a component related to an interactive top-down approach. Indoor Built Environ 2008;17(6):483–495.

23.

Cole

Robinson

Brown

O’Shea

: Re-contextualizing the notion of comfort: Building Res Inform 2010;36(4):323–336.

24.

Measurement project managed by Larsen, Demonstration af energiforbrug og indeklima i 10 danske passivhuse (Measurement project: Demonstration of energy use and indoor environment in 10 Danish passive houses), http://vbn.aau.dk/da/projects/demonstration-af-energiforbrug-og-indeklima-i-10-danske-passivhuse_10c960c0-db35-4bcc-a141-34f77dac9aae.html (accessed 01 June 2009).