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Computer modelling and experimental investigation of building integrated sub-wet bulb temperature evaporative cooling system

Boukhanouf, Rabah; Alharbi, Abdulrahman; Ibrahim, Hatem G.; Amer, Omar; Worall, Mark

Authors

Rabah Boukhanouf rabah.boukhanouf@nottingham.ac.uk

Abdulrahman Alharbi laxaa17@nottingham.ac.uk

Hatem G. Ibrahim hatem_ibrahim@qu.edu.qa

Omar Amer ezxoea@nottingham.ac.uk

Mark Worall mark.worall@nottingham.ac.uk



Abstract

The paper presents computer modelling and laboratory experiment results of a sub-wet bulb temperature indirect evaporative cooling system for space cooling in buildings. The prototype employs hollow porous ceramic water containers as wet media material for water evaporation. The cooled air is delivered without increasing its moisture content. The performance of the cooler was evaluated using a computer model, and the results of which were validated experimentally. The cooling capacity and effectiveness of the cooler were evaluated at inlet air dry bulb temperature of 30 and 35°C and relative humidity ranging from 35% to 50%. It was found that the cooler can supply air for space cooling at sub-wet bulb temperature conditions; achieve measured cooling capacity approaching 225 W/m2 of exposed ceramic material wet surface area and wet bulb effectiveness higher than unity. The high thermal performance of the constructed evaporative cooler indicates the system could be a potential substitute to conventional mechanical air-conditioning systems in buildings in many parts of the world where hot and dry climatic conditions prevail.

Journal Article Type Article
Publication Date Mar 25, 2017
Journal Applied Thermal Engineering
Print ISSN 1359-4311
Electronic ISSN 1873-5606
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 115
Institution Citation Boukhanouf, R., Alharbi, A., Ibrahim, H. G., Amer, O., & Worall, M. (2017). Computer modelling and experimental investigation of building integrated sub-wet bulb temperature evaporative cooling system. Applied Thermal Engineering, 115, doi:10.1016/j.applthermaleng.2016.12.119
DOI https://doi.org/10.1016/j.applthermaleng.2016.12.119
Keywords Evaporative cooling, Sub-wet bulb temperature, Heat and mass transfer, Wet media, Dew point
Publisher URL http://www.sciencedirect.com/science/article/pii/S1359431116343964
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0







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