Effect of humidity on human comfort and productivity after step changes from warm and humid environment

Hitomi Tsutsumi, Shinichi Tanabe, Junkichi Harigaya, Yasuo Iguchi, Gen Nakamura

    Research output: Contribution to journalArticle

    73 Citations (Scopus)

    Abstract

    Subjective experiments were conducted to evaluate the effects of humidity on human comfort and productivity under transient conditions from hot and humid environment to thermally neutral condition. Two climate chambers, "Chamber 1" and "Chamber 2", adjoined each other were used for this study. Subjects were exposed to 30 °C/70%RH air in Chamber 1 for 15 min with 2.0 met of metabolic rate. Then they moved into Chamber 2, where 4 humidity conditions, 30, 40, 50 and 70%RH were examined. Air temperature was adjusted to keep SET* constant at 25.2 °C for all conditions. Subjects were exposed in Chamber 2 for 180 min performing 2 kinds of simulated office work. Positive effects of low humidity on subjective pleasantness were found under transient condition at low humidity due to more evaporation from human body, while no significant difference in thermal sensation and humidity sensation among 4 relative humidity levels was obtained. Subjective performance was found to be at the same level under all conditions. However, subjects reported to be more tired at 70%RH after humidity step change.

    Original languageEnglish
    Pages (from-to)4034-4042
    Number of pages9
    JournalBuilding and Environment
    Volume42
    Issue number12
    DOIs
    Publication statusPublished - 2007 Dec

    Fingerprint

    humid environment
    chamber
    Atmospheric humidity
    humidity
    Productivity
    productivity
    air
    office work
    Air
    effect
    relative humidity
    air temperature
    evaporation
    climate
    Evaporation
    experiment
    performance

    Keywords

    • Comfort
    • Humidity
    • Productivity
    • Step change
    • Subjective experiment

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Environmental Engineering
    • Geography, Planning and Development

    Cite this

    Effect of humidity on human comfort and productivity after step changes from warm and humid environment. / Tsutsumi, Hitomi; Tanabe, Shinichi; Harigaya, Junkichi; Iguchi, Yasuo; Nakamura, Gen.

    In: Building and Environment, Vol. 42, No. 12, 12.2007, p. 4034-4042.

    Research output: Contribution to journalArticle

    Tsutsumi, Hitomi ; Tanabe, Shinichi ; Harigaya, Junkichi ; Iguchi, Yasuo ; Nakamura, Gen. / Effect of humidity on human comfort and productivity after step changes from warm and humid environment. In: Building and Environment. 2007 ; Vol. 42, No. 12. pp. 4034-4042.
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