Thermal Assessment of a Novel Combine Evaporative Cooling Wind Catcher

Wind catchers are one of the oldest cooling systems that are employed to provide sufficient natural ventilation in buildings. In this study, a laboratory scale wind catcher was equipped with a combined evaporative system. The designed assembly was comprised of a one-sided opening with an adjustable...

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Bibliographic Details
Published in:Energies (Basel) 2018-02, Vol.11 (2), p.442
Main Authors: Noroozi, Azam, Veneris, Yannis S.
Format: Article
Language:English
Subjects:
Air temperature
Catchers
Cooling
Cooling loads
Cooling rate
cooling system
Cooling systems
Evaporative cooling
experimental validation
Theoretical analysis
thermal modeling
Velocity
wind catcher
Wind effects
Wind speed
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Summary:Wind catchers are one of the oldest cooling systems that are employed to provide sufficient natural ventilation in buildings. In this study, a laboratory scale wind catcher was equipped with a combined evaporative system. The designed assembly was comprised of a one-sided opening with an adjustable wetted pad unit and a wetted blades section. Theoretical analysis of the wind catcher was carried out and a set of experiments were organized to validate the results of the obtained models. The effect of wind speed, wind catcher height, and mode of the opening unit (open or closed) was investigated on temperature drop and velocity of the moving air through the wind catcher as well as provided sensible cooling load. The results showed that under windy conditions, inside air velocity was slightly higher when the pad was open. Vice versa, when the wind speed was zero, the closed pad resulted in an enhancement in air velocity inside the wind catcher. At wind catcher heights of 2.5 and 3.5 m and wind speeds of lower than 3 m/s, cooling loads have been approximately doubled by applying the closed-pad mode.
ISSN:1996-1073
1996-1073
DOI:10.3390/en11020442