Evaluation of Effects of the Humidity Level-Based Auto-Controlled Centralized Exhaust Ventilation Systems on Thermal Comfort of Multi-Family Residential Buildings in South Korea

Byung Chang Kwag, Jungha Park, Seongyong Kim and Gil Tae Kim
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Byung Chang Kwag: Center for Housing Environment Research and Innovation of the Korea Land and Housing Institute, Sejong 30065, Korea
Jungha Park: Center for Housing Environment Research and Innovation of the Korea Land and Housing Institute, Sejong 30065, Korea
Seongyong Kim: Center for Housing Environment Research and Innovation of the Korea Land and Housing Institute, Sejong 30065, Korea
Gil Tae Kim: Center for Housing Environment Research and Innovation of the Korea Land and Housing Institute, Sejong 30065, Korea

Sustainability, 2019, vol. 11, issue 17, 1-14

Abstract: Building air-tightness has been increased to make energy efficient buildings. However, various indoor air quality issues can be caused by high building air-tightness because it allows low air and moisture transmission through building envelop. In order to solve and prevent these issues, mechanical ventilation systems can be used to control the indoor humidity level. The purpose of this paper is to evaluate the performances of the Relative Humidity (RH)-sensor based auto-controlled centralized exhaust ventilation systems to manage indoor air quality and thermal comfort of multi-family residential buildings in South Korea. A series of field tests were performed for different target zones and for various moisture source scenarios. As a result, it was found that the auto-controlled centralized exhaust ventilation systems were able to control indoor air quality and to maintain the zones thermal comfort faster than the baseline cases that did not operate exhaust vents. The results presented in this paper can show the potential and the feasibility of the auto-controlled centralized exhaust ventilation systems for multi-family residential buildings in South Korea. It is expected that the results presented in this paper would be useful for building owners, engineers, and architects when designing building systems.

Keywords: centralized exhaust ventilation; humidity level; field tests; auto control; thermal comfort (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
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