Study on Variation of Internal Heat Gain in Office Buildings by Chronology

Hyemi Kim, Kyung-soon Park, Hwan-yong Kim and Young-hak Song
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Hyemi Kim: Graduated School, Department of Architectural Engineering, Gyeongsang National University, Jinju 52828, Korea
Kyung-soon Park: Architectural Engineering Major, Division of Urban, Architecture and Civil Engineering, Dong-eui University, Busan 47340, Korea
Hwan-yong Kim: Department of Architectural Engineering, ERI, Gyeongsang National University, Jinju 52828, Korea
Young-hak Song: Department of Architectural Engineering, ERI, Gyeongsang National University, Jinju 52828, Korea

Energies, 2018, vol. 11, issue 4, 1-16

Abstract: The additional process of load calculation during the retrofit of heating, ventilation, and air conditioning (HVAC) equipment has been generally omitted in Korea, in recent years. Instead, a simple replacement of HVAC equipment, based on existing HVAC capacities, has been used, which is limited when taking the variation of internal heat gain into consideration, due to changes in the consumption power due to light and office automation (OA) equipment in recent years. Thus, this study aimed to identify a change in internal heat gains over 30 years, from 1985 to 2015, study investigated actual measurement-based academic papers and catalogs about OA equipment, lighting, and the number of occupants per unit area. The heat load produced from OA equipment has increased by approximately 49.6% in 2015 compared to that of 1980, and the heat load from lighting equipment has decreased by 47% compared to that of fluorescent-based lighting, and the heat load from human bodies was approximately 10 W/m 2 on average, which showed a minimal change over the past 30 years. The internal heat gain calculated for 30,000 m 2 of total floor area has increased constantly for the last 30 years. Note that the internal heat gains were designed excessively, as the values used in literature was approximately 17% to 50% smaller than the value used normally in the case of pre-2000 designs, and the values used after 2000 were approximately 35% to 50% smaller than the design standard value.

Keywords: internal heat gain; OA load; lighting load; occupancy load; plug load (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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