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Why Does a High Humidity Level Form in Low-Income Households Despite Low Water Vapor Generation?

Author

Listed:
  • Younhee Choi

    (Center for Built Environment, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Korea)

  • Younghoon Lim

    (Samsung C&T Co., DS-Retrofit, Samsung SDS Tower, Seoul 53302, Korea)

  • Joowook Kim

    (Center for Built Environment, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Korea)

  • Doosam Song

    (Department of Architectural Eng., Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Korea)

Abstract

This study uses long-term field measurements to quantify the indoor humidity generation rates of low-income households vulnerable to condensation and related problems. We found that the mean internal moisture excess of low-income households in Korea was 4.69 g/m 3 higher than those of prior studies. Indoor water vapor generation rates of various activities considering the life style of low-income households were also quantified. The moisture generation rates of the shower and bath were 125.3 g/event and 51.1 g/event, respectively, and showed a similar or lower value compared to the existing results. The moisture generation rate of cooking showed the largest difference due to the residential characteristics of low-income households, such as cooking less frequently due to meal delivery services from the welfare center and the lower number of residents per household. Even though the moisture generation rates of low-income households for certain activities showed lower values compared to the results of prior studies, the indoor conditions were very humid due to the lower ventilation rates and studio-type open floor plan.

Suggested Citation

  • Younhee Choi & Younghoon Lim & Joowook Kim & Doosam Song, 2020. "Why Does a High Humidity Level Form in Low-Income Households Despite Low Water Vapor Generation?," Sustainability, MDPI, vol. 12(18), pages 1-16, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:18:p:7563-:d:413241
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    References listed on IDEAS

    as
    1. So Young Koo & Sihyun Park & Jin-Hee Song & Seung-Yeong Song, 2018. "Effect of Surface Thermal Resistance on the Simulation Accuracy of the Condensation Risk Assessment for a High-Performance Window," Energies, MDPI, vol. 11(2), pages 1-13, February.
    2. Sowoo Park & Joowook Kim & Doosam Song, 2019. "The Effect of an Energy Refurbishment Scheme on Adequate Warmth in Low-income Dwellings," Sustainability, MDPI, vol. 11(9), pages 1-13, May.
    3. Joowook Kim & Jemin Myoung & Hyunwoo Lim & Doosam Song, 2020. "Efficiency Gap Caused by the Input Data in Evaluating Energy Efficiency of Low-Income Households’ Energy Retrofit Program," Sustainability, MDPI, vol. 12(7), pages 1-11, April.
    4. Wanghee Cho & Shizuo Iwamoto & Shinsuke Kato, 2016. "Condensation Risk Due to Variations in Airtightness and Thermal Insulation of an Office Building in Warm and Wet Climate," Energies, MDPI, vol. 9(11), pages 1-25, October.
    Full references (including those not matched with items on IDEAS)

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