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2024 Vol.44, Issue 1 Preview Page
Effects of Plenum Load on Cooling Capacity Design of Ceiling Radiant Cooling Panels

천장복사냉방 패널의 냉방용량 설계에서 플레넘 부하의 영향

Kyu-Nam Rhee1
,
Jae-Han Lim2
,
Seong-Ryong Ryu3*
이 규남1
,
임 재한2
,
류 성룡3*
1Associate Professor, Department of Architecture Engineering, Pukyong National University
2Professor, Department of Architectural and Urbans Systems Engineering, Ewha Womans University
3Associate Professor, Department of Architecture Engineering, Kumoh National Institute of Technology
1부경대학교 건축공학과, 부교수
2이화여자대학교 건축도시시스템공학전공, 교수
3국립금오공과대학교 건축학부 건축공학전공, 부교수
*Corresponding Author
28 February 2024. pp. 29-38
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Abstract

This study investigated the impact of the plenum load on the cooling capacity of ceiling radiant cooling panel (CRCP) systems. A two-dimensional simulation model using Physibel BISCO was developed to represent a small room (3.8 m (L) × 2.9 m (H)) equipped with CRCPs. To analyze the plenum load impact depending on the CRCP type (top insulation, and open- or closed-type installation), three cases were considered: closed-type with top insulation (Case 1), closed-type without top insulation (Case 2), and open-type without top insulation (Case 3). The simulation results showed that the presence of the plenum load increased the plenum air temperature and caused the CRCP to absorb part of the plenum load, consequently leading to the enhanced cooling capacity of the CRCPs. When the plenum load increased to 10%–20% of the room load, the cooling capacity was enhanced by 7.9% ~ 16.8%, compared to the case without a plenum load. This implied that CRCPs could be undersized when they are designed without considering the plenum load. Furthermore, the cooling capacity showed a greater enhancement in the CRCPs without top insulation (Cases 2 and 3) than in those with top insulation (Case 1). Particularly, a higher cooling capacity was obtained with a higher water temperature when applying CRCPs without top insulation. The results suggested that open-type CRCPs without top insulation would be a good cooling solution for a room with a plenum because they are suitable for removing the plenum load even at relatively high water temperatures.

Keywords
Ceiling radiant cooling panel
Cooling load
Cooling capacity
Plenum
키워드
천장복사냉방패널
냉방부하
냉방용량
플레넘
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 44
  • No :1
  • Pages :29-38
  • Received Date : 2023-12-19
  • Accepted Date : 2023-12-21
  • DOI :https://doi.org/10.7836/kses.2024.44.1.029
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