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Investigating Recommended Temperature Zones and Clothing Assumptions in the Assessment of Classrooms’ Thermal Environment

  • Despoina TeliEmail author
  • Jan-Olof Dalenbäck
Conference paper
Part of the Springer Proceedings in Energy book series (SPE)

Abstract

There has been a lot of research over recent years on children’s thermal comfort, which highlighted the different needs of young children compared to adults. These findings pose a challenge to designers on how to best meet these needs. This paper focuses on recommended temperature zones and assumptions used in standards through a case study in a grade school in Gothenburg, Sweden. Six classrooms were investigated in three buildings of the same school. The indoor temperature was measured using small-scale data loggers programmed to log at 5-minute intervals for a period of 5 months (mid-December to early-June). Thermal comfort questionnaires were also distributed to children throughout the monitoring period. A total of 45,000 temperature readings corresponding to assumed occupied hours and approximately 2000 thermal sensation votes and clothing insulation values are used in the analysis. Results indicate that assumed occupancy schedules may differ to real use, leading to overestimation of time when indoor environmental parameters are outside recommended ranges. Children’s clothing insulation was found to be lower than assumed in standards in both winter and summer. Omitting to account for such differences may lead to misinterpretation of indoor environment assessments and design solutions.

Keywords

Thermal comfort Indoor environment quality School buildings Children Clothing insulation 

Notes

Acknowledgements

The authors would like to thank the teachers and children who participated in this study. This work has been performed with support from VINNOVA (Swedish Governmental Agency for Innovation Systems), the Profile ‘Energy in Urban Development’ within the Area of Advance ‘Energy’ at Chalmers University of Technology and the Sustainable Energy Research Group (www.energy.soton.ac.uk) at the University of Southampton.

References

  1. 1.
    Mors St, J.L.M. Hensen, M.G.L.C. Loomans, A.C. Boerstra, Adaptive thermal comfort in primary school classrooms: creating and validating PMV-based comfort charts. Build. Environ. 46, 2454–2461 (2011)CrossRefGoogle Scholar
  2. 2.
    D. Teli, M.F. Jentsch, P.A.B. James, Naturally ventilated classrooms: an assessment of existing comfort models for predicting the thermal sensation and preference of primary school children. Energy Build. 53, 166–182 (2012)CrossRefGoogle Scholar
  3. 3.
    M. Trebilock, R. Figueroa, Thermal comfort in primary schools: a field study in Chile, in Counting the Cost of Comfort in a changing world, 10–13 April 2014. Cumberland Lodge, Windsor, UK (2014)Google Scholar
  4. 4.
    R. de Dear, J. Kim, C. Candido, M. Deuble, Adaptive thermal comfort in Australian school classrooms. Build. Res. Inf. 43, 383–398 (2015)CrossRefGoogle Scholar
  5. 5.
    S. Haddad, P. Osmond, S. King, Revisiting thermal comfort models in Iranian classrooms during the warm season. Build. Res. Inf., 1–17 (2016)Google Scholar
  6. 6.
    A. Montazami, M. Gaterell, F. Nicol, M. Lumley, C. Thoua, Developing an algorithm to illustrate the likelihood of the dissatisfaction rate with relation to the indoor temperature in naturally ventilated classrooms. Build. Environ. 111, 61–71 (2017)CrossRefGoogle Scholar
  7. 7.
    ISO, EN ISO 7730:2005 Ergonomics of the thermal environment- Analytical determination and interpretation of thermal comfort using calculation of the PMV and PPD indices and local thermal comfort criteria. Geneva: International Standardisation Organisation (2005)Google Scholar
  8. 8.
    S. Gauthier, in The Role of Environmental and Personal Variables in Influencing Thermal Comfort Indices Used in Building Simulation. Conference Proceedings: 13th Conference of International Building Performance Simulation Association (BS2013) (2013), 2320–2325Google Scholar
  9. 9.
    ISO, EN ISO 8996:2005 Ergonomics of the thermal environment-determination of metabolic rate. Geneva: International Standardisation Organisation (2004)Google Scholar
  10. 10.
    ISO, EN ISO 9920:2009 Ergonomics of the thermal environment. Estimation of thermal insulation and water vapour resistance of a clothing ensemble (ISO 9920:2007, Corrected version 2008-11-01). Geneva: International Standardisation Organisation (2009)Google Scholar
  11. 11.
    ASHRAE, ANSI/ASHRAE Standard 55- Thermal Environmental Conditions for Human Occupancy. Atlanda: American Society of Heating, Refrigerating and Air-Conditioning Engineers (2013)Google Scholar
  12. 12.
    G. Havenith, Metabolic rate and clothing insulation data of children and adolescents during various school activities. Ergonomics 50, 1689–1701 (2007)CrossRefGoogle Scholar
  13. 13.
    F. Nicol, M. Humphreys, S. Roaf, Adaptive Thermal Comfort: Principles and Practice (Routledge, London, 2012)CrossRefGoogle Scholar
  14. 14.
    CEN, EN 15251:2007 Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics. Brussels: CEN (European Committee for Standardization) (2007)Google Scholar
  15. 15.
    S. Schiavon, K.H. Lee, Dynamic predictive clothing insulation models based on outdoor air and indoor operative temperatures. Build. Environ. 59, 250–260 (2013)CrossRefGoogle Scholar
  16. 16.
    Folkhälsomyndigheten. FoHMFS 2014:17. Folkhälsomyndighetens allmänna råd om temperatur inomhus (In Swedish). (Folkhälsomyndigheten, Stockholm, Sweden, 2014Google Scholar
  17. 17.
    Boverket och Arbetarskyddsstyrelsen. Att se, höra och andas i skolan, Handbok H255 (In Swedish) (1996)Google Scholar
  18. 18.
    D. Teli, P.A.B. James, M.F. Jentsch, Thermal comfort in naturally ventilated primary school classrooms. Build. Res. Inf. 41, 301–316 (2013)CrossRefGoogle Scholar
  19. 19.
    D. Teli, J-O. Dalenbäck, L. Ekberg, in Winter Thermal Comfort and Indoor Air Quality in Swedish Grade School Classrooms, as Assessed by the Children. Indoor Air 2016: 14th International Conference of Indoor Air Quality and Climate 2016Google Scholar
  20. 20.
    D. Teli, L. Bourikas, P.A.B. James, A.S. Bahaj, Thermal performance evaluation of school buildings using a children-based adaptive comfort model. Procedia Environ. Sci. 38, 844–851 (2017)CrossRefGoogle Scholar
  21. 21.
    D.A. McIntyre, Indoor climate (Applied Science Publishers, London, 1980)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Division of Building Services, Department of Architecture and Civil EngineeringChalmers University of TechnologyGöteborgSweden
  2. 2.Division of Energy and Climate Change, Sustainable Energy Research Group, Faculty of Engineering and the EnvironmentUniversity of SouthamptonSouthamptonUK

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