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Effects of weather on indoor thermal comfort

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Abstract

Groups of secondary schoolchildren in England were asked to assess thermal conditions in winter according to subjective sensations of warmth. Individual comfort votes were averaged for each group and regressed, firstly on estimates of microclimatic warmth, and secondly, in combination with external meteorological parameters. It appeared that thermal comfort was related not only to indoor temperatures, but also to outdoor warmth. The most similar regressions between the sexes, however, contained variables also representing humidity and changes in the external warmth — humidity environment. In particular cool-humid days and changes to warmer-drier weather were related to a decreased need for indoor warmth.

Zusammenfassung

Gruppen von Mittelschülern in England wurden aufgefordert, im Winter die Wärmebedingungen nach dem subjektiven Wärmeempfinden abzuschätzen. Die individuellen Behaglichkeitsangaben wurden für jede Gruppe gemittelt und mit der Wärme im Raum und äusseren meteorologischen Parametern korreliert. Das Wärmeempfinden stand nicht nur in enger Beziehung zu den Raumtemperaturen sondern auch zu der Aussenwärme. Selbst die ähnlichsten Regressionen für beide Geschlechter wiesen jedoch Abweichungen auf in Abhängigkeit von der Feuchtigkeit und Wechseln im äusseren Temperatur-Feuchte-Milieu. Besonders an kühl-feuchten Tagen und beim Wechsel nach wärmeren trockenerem Wetter bestand ein vermindertes Bedürfnis für Wärme im Raum.

Resume

Des groupes d'élèves du degré moyen d'Angleterre ont été priés d'estimer, en hiver, les conditions de chaud d'après des critères subjectifs. On a établi pour chaque groupe les moyennes des indications individuelles de confort et calculé ensuite les corrélations avec la température des locaux et les paramètres météorologiques relevés à l'extérieur. La sensation de chaud ne fut pas seulement en étroite relation avec la température des pièces d'habitation, mais aussi avec la température extérieure. Des régressions analogues, calculees séparément pour les deux sexes, ont montré des différences dépendant de l'humidité ou des variations de température et d'humidité du milieu extérieur. On a constaté une diminution des besoins en chaleur dans les locaux durant les jours frais et humides et lors de changements vers un temps plus chaud et plus sec.

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Auliciems, A. Effects of weather on indoor thermal comfort. Int J Biometeorol 13, 147–162 (1969). https://doi.org/10.1007/BF01552736

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  • DOI: https://doi.org/10.1007/BF01552736

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