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Spontaneous magnitude estimation of thermal discomfort during changes in the ambient temperature*

Published online by Cambridge University Press:  15 May 2009

D. P. Wyon ,
I. Andersen  and
G. R. Lundqvist
D. P. Wyon
Affiliation:
Statens Institut för Byggnadsforskning, LTH-A, Box 725, 220 07 Lund, Sweden
I. Andersen
Affiliation:
Institute of Hygiene, University of Aarhus, Universitetsparken, DK-8000 Århus C, Denmark
G. R. Lundqvist
Affiliation:
Institute of Hygiene, University of Aarhus, Universitetsparken, DK-8000 Århus C, Denmark
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Summary

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Thermal comfort sensations are often studied in isolation, with the subjects' attention specifically directed towards their evaluation, both by instructions and by the recurrent act of questioning. A closer approach to the field situation, in which room temperature is at most a background stimulus, is made possible by the method of spontaneous magnitude estimation of thermal sensation. Thirty-six male and 36 female 17-year-old subjects in standard cotton uniforms (0·7 clo) were exposed in groups of 4 in a climate chamber to patterns of changing air temperature typical of conditions in occupied classrooms. Temperatures remained within the range 20–29° C. and did not increase more rapidly than 4° C./hr. Each individual recorded his thermal sensation on a dial voting apparatus, registering changes spontaneously as a secondary task while performing mental work during three successive 50 min. periods, with 10 min. breaks between. It was thus possible to obtain a measure of the time course of thermal discomfort sensations, including the extent to which they distracted attention. Significant differences were found between the responses of males and females, males in general feeling hotter and reacting more rapidly to changes in temperature. Response distributions are given in detail.

Type
Research Article
Information
Journal of Hygiene , Volume 70 , Issue 2 , June 1972 , pp. 203 - 221
Copyright
Copyright © Cambridge University Press 1972

References

REFERENCES

Andersen, I. (1970). Medical-hygienic evaluation of indoor climate. World Meteorological Organization, no. 225, pp. 159–169.Google Scholar
Andersen, I. & Lundqvist, G. R. (1966). Indøndørsklima i skoler (Indoor climate in schools). Danish State Building Research Institute, no. 57, 100 pp. Copenhagen: Danish Technical Press.Google Scholar
Andersen, I. & Lundqvist, G. R. (1970). Design and performance of an environmental chamber at the University of Aarhus, Denmark. International Journal of Biometeorology 14, 402–5.Google ScholarPubMed
Antoni, N. (1969). Projekteringsunderlag för skolbyggnader för grundskolan [A design study of school buildings]. National Swedish Institute for Building Research, no. R 50/69, 17 booklets. Stockholm: AB Svensk Byggtjänst.Google Scholar
Bedford, T. (1964). Basic Principles of Ventilation and Heating. 2nd ed. London: H. K. Lewis and Co. Ltd.Google Scholar
Diem, K., ed. (1962). Scientific Tables. Basel: J. R. Geigy S.A.Google Scholar
Erikson, B. E. & Mandorff, S. (1967). Lärare bedömer klassrumsklimatet [Teachers' opinions of classroom climate]. National Swedish Institute for Building Research, no. R 31/67, 52pp.Google Scholar
Fanger, P. O. (1970). Thermal Comfort. Copenhagen: Danish Technical Press.Google Scholar
Finney, D. J. (1947). Probit Analysis. Cambridge University Press.Google Scholar
Fox, R. H., Löfstedt, B. E., Woodward, Patbicia M., Ebbksson, E. & Werkstbom, B. (1969). Comparison of thermoregulatory function in men and women. Journal of Applied Physiology 26, 444–53.CrossRefGoogle ScholarPubMed
Holmbbbg, I. & Wyon, D. P. (1969). The dependence of performance in school on classroom temperature. Educational and Psychological Interactions, no. 31, 20 pp. School of Education, 200 45 Malmö 23, Sweden.Google Scholar
Jonckheere, A. R. (1954). A distribution-free K-sample test against ordered alternatives. Biometrika 41, 133–45.CrossRefGoogle Scholar
Mandorff, S. (1971). Calculation of the frequency of high room temperatures as a result of hot outdoor climate. Proceedings of the 5th International Congress for Heating, Ventilating and Air-conditioning, Copenhagen 1, 41–63.Google Scholar
Siegel, S. (1956). Nonparametric Statistics. New York: McGraw-Hill.Google Scholar
Statistisk Årbog [Statistical yearbook] (1969). Copenhagen: Danmarks Statistik.Google Scholar
Stolwijk, J. A. J. (1969). Thermoregulatory responses of men and women at rest to sudden changes in environmental temperature. Biometeorology 4, 28–9. (Abstract only.)Google Scholar
Winer, B. J. (1962). Statistical Principles in Experimental Design. New York: McGraw-Hill.CrossRefGoogle Scholar
Wyon, D. P. (1969). The effects of moderate heat stress on the mental performance of children. National Swedish Institute for Building Research, no. D 8/69, 83 pp.Google Scholar
Wyon, D. P. (1970 a). Studies of children under imposed noise and heat stress. Ergonomic 13, 598–612.CrossRefGoogle Scholar
Wyon, D. P. (1970 b). Conséquences de la température sur l'éveil et l'effort dans le travail intellectuel [The effects of temperature on arousal and effort in mental work]. Cahiers de l'Association Française de Biométéorologie 3 (2), 16–21.Google Scholar
Wyon, D. P., Lidwell, O. M. & Williams, R. E. O. (1968). Thermal comfort during surgical operations. Journal of Hygiene 66, 229–48.CrossRefGoogle ScholarPubMed