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ISSN : 2288-9167(Print)
ISSN : 2288-923X(Online)
Journal of Odor and Indoor Environment Vol.13 No.4 pp.326-335
DOI : https://doi.org/10.15250/joie.2014.13.4.326

The relationship between indoor and outdoor temperature and humidity in two types of residence

Jiseon Yeom1, Daeyeop Lee1, Kiyoung Lee1*, John D. Spengler2, Geun Bae Kim3, Seung Do Yu3
1Department of Environmental Health and Institute of Health and Environment, Graduate School of Public Health, Seoul National University, Seoul, Republic of Korea
2Harvard School of Public Health, Boston, MA, USA
3Environmental Health Research Division, National Institute of Environmental Research, Incheon, Republic of Korea
*Corresponding author Tel : +82-2-880-2735
E-mail : cleanair@snu.ac.kr
13 October, 2014 12 November, 2014 26 November, 2014

Abstract

Residential thermal conditions are important because people spend the majority of their time in the home environment. Indoor temperature and relative humidity(RH) were measured continuously over 1 year in 14 residences in Seoul, Korea. The relationship between residential indoor and outdoor conditions were determined by four meteorological parameters-temperature, apparent temperature(AT), RH, and absolute humidity(AH). Outdoor and indoor temperature, AT and AH were closely correlated, but RH was not. While indoor temperatures, AT, and AH were significantly higher than the corresponding outdoor levels, indoor RH was significantly lower than outdoor RH. Regression models between indoor and outdoor temperature detected a heating threshold at 15.0oC of outdoor temperature. The indoor thermal conditions were significantly different by the two residence types. Indoor temperatures in apartments were lower in summer and higher in winter than those in detached houses. However, indoor RHs in apartments were lower than in detached houses. During tropical nights, the daily temperature range was higher in residences with air-conditioning than in naturally ventilated residences.

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