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AuthorHarrouz, Jean Paul
AuthorAl Assaad, Douaa
AuthorOrabi, Mohamad
AuthorGhali, Kamel
AuthorOuahrani, Djamel
AuthorGhaddar, Nesreen
Available date2023-11-29T07:17:19Z
Publication Date2021-12-01
Publication NameInternational Journal of Energy Research
Identifierhttp://dx.doi.org/10.1002/er.7139
CitationHarrouz, J. P., Al Assaad, D., Orabi, M., Ghali, K., Ouahrani, D., & Ghaddar, N. (2021). Modeling and optimization of poultry house passive cooling strategies in semiarid climates. International Journal of Energy Research, 45(15), 20795-20811.‏
ISSN0363907X
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85111714067&origin=inward
URIhttp://hdl.handle.net/10576/49783
AbstractMeeting hygrothermal and air quality requirements in livestock dwellings is crucial for upholding production quality standards. However, ventilation and air-conditioning in such enclosures is very energy-intensive, especially amidst climate change and intensifying summer conditions. This is due to large surface areas, livestock densities, and contaminants' generation rates. Hence, striving for more efficient passive cooling techniques is always a desired goal to reduce the anthropogenic emissions of the agricultural sector without compromising production quality. In this study, the energy savings' potential of two passive systems in a poultry house located in the semiarid climate of Beqaa Valley, Lebanon, was compared. The first system is the conventional stand-alone direct evaporative cooler (DEC), which evaporatively cools the outdoor clean air to temperatures close to its wet bulb. The second system combines with the DEC, an earth-to-air heat exchanger (EAHE) that sensibly precools the ambient air and reduces its wet-bulb temperature. This can increase the cooling capacity of the DEC, which can save substantial amounts of energy while achieving similar, if not better, indoor conditions. To conduct this study, simplified mathematical models were developed for the DEC, EAHE, and the poultry house space, assuming a well-mixed air volume. After sizing the systems, simulation results showed that the stand-alone DEC system was not able to meet relative humidity requirements at all times unlike the proposed hybrid EAHE/DEC system. Moreover, the hybrid EAHE/DEC system resulted in 40% reduction in air and water consumption rates compared with the DEC system during the summer season.
SponsorThe financial and in-kind support of Qatar University in setting up the Zero Emission Laboratoryis greatly acknowledged.
Languageen
PublisherElsevier Ltd
Subjectdirect evaporative cooler
earth-to-air heat exchanger
energy efficiency
poultry welfare
sustainable cooling
TitleModeling and optimization of poultry house passive cooling strategies in semiarid climates
TypeArticle
Pagination20795-20811
Issue Number15
Volume Number45
dc.accessType Open Access


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