influence of lighting loads upon thermal comfort under cbad and ufad systems
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2015
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Abstract
Under-floor air distribution (UFAD) systems are occupied-area-based air conditioning systems that generally offer advantages over ceiling-based air distribution (CBAD) systems in terms of energy efficiency and thermal comfort; accordingly, UFAD systems have become more popular lately. The purpose of this study is to provide reasonable UFAD application conditions by comparing and analyzing the influences of cooling loads when UFAD and CBAD are applied to thermally control indoor environments. A chamber experiment was conducted to allow comparisons of the indoor thermal environment under CBAD and UFAD, with the experimental variables of the thermal load of the occupied area and the supply airflow rate. In conclusion, the lower the supply airflow and the higher the lighting power density, the more the thermal comfort of the indoor environment could be improved by using UFAD instead of CBAD. In the lighting power density range of 0–30 W/m2, correlations were calculated whereby the lighting power density levels could be predicted that would ensure thermal comfort at a desired level.
| Reference Key |
yu2015energiesinfluence
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|---|---|
| Authors | ;Ki-Hyung Yu;Seong-Hoon Yoon;Hae-Kwon Jung;Kee Han Kim;Kyoo-Dong Song |
| Journal | acs combinatorial science |
| Year | 2015 |
| DOI |
10.3390/en8066079
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| URL | |
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