Record link: 
http://hdl.handle.net/20.500.12708/139872
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Title: 
Measurement and CFD Analysis of a Local Radiant Cooling Solution
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Citation: 
Najaf Khosravi, S., Teufl, H., & Mahdavi, A. (2022). Measurement and CFD Analysis of a Local Radiant Cooling Solution. In F. of C. E. Czech Technical University in Prague (Ed.), Book of Abstracts Central Europe towards Sustainable Building 2022 (CESB22) (pp. 74–74). Czech Technical University in Prague 2022. http://hdl.handle.net/20.500.12708/139872
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Publication Type: 
Inproceedings - Abstract Book Contribution
en
Language: 
English
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Authors: 
Najaf Khosravi, Shiva 
Teufl, Helene 
Mahdavi, Ardeshir 
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Organisational Unit: 
E259-03 - Forschungsbereich Bauphysik und Bauökologie 
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Published in: 
Book of Abstracts Central Europe towards Sustainable Building 2022 (CESB22) 
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Date (published): 
4-Jul-2022
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Event name: 
CESB22 - Central Europe towards Sustainable Building 
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Event date: 
4-Jul-2022 - 6-Jul-2022
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Event place: 
Prague, Czechia
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Number of Pages: 
1
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Publisher: 
Czech Technical University in Prague 2022, Prague
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Keywords: 
radiant cooling panel; thermal comfort; Air flow; CFD simulation
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Additional information: 
This paper entails an empirical and computational assessment of the air flow field in the close proximity of a vertically positioned radiant cooling panel. This radiant cooling solution differs from the conventional large-area radiant cooling systems (e.g., ceiling panels). It involves rather small-sized vertical panels positioned close to occupants. Moreover, the panels are designed so as to manage potential surface condensation of water vapor via integrated drainage elements. Hence, the panels can be operated with relatively low surface temperatures. The low panel surface temperature and its proximity to the occupants are intended to compensate for the potential lower cooling power due to the relatively small panel size. In this paper, we specifically explore the air flow field close to the local radiant cooling panel via laboratory measurements and CFD simulations. Thus, possible issues regarding discomfort due to draft and turbulence risk close to the radiant panel can be examined. To this end, a prototypical local radiant cooling panel was installed in a mock-up office room of a laboratory. The ambient air temperature and relative humidity in the room were kept at 30±0.5°C and 40±3%, respectively. During the experiments, the target panel surface temperature was 10°C. The air flow speed was measured and simulated at several heights (between 10 and 110 cm from the floor) and distances (ranging from 1 to 50 cm from the radiant panel). The results allow for the evaluation of the draft discomfort risk as well as the reliability of CFD in reproduction of the measurement results.
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Research Areas: 
Energy Active Buildings, Settlements and Spatial Infrastructures: 50%
Sustainable Production and Technologies: 25%
Modeling and Simulation: 25%
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Science Branch: 
2012 - Architektur: 75%
1020 - Informatik: 25%
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