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Article

Improving the Thermal Performance of Indirect Evaporative Cooling by Using a Wet Fabric Device on a Concrete Roof in Hot and Humid Climates

by
Carlos J. Esparza-López
1,*,
Carlos Escobar-del Pozo
2,
Karam M. Al-Obaidi
3,* and
Marcos Eduardo González-Trevizo
4
1
Faculty of Architecture and Design, University of Colima, Colima 28040, Mexico
2
Faculty of Mechanical and Electrical Engineering, University of Colima, Colima 28040, Mexico
3
Department of the Natural and Built Environment, College of Social Sciences and Arts, Sheffield Hallam University, Sheffield S1 1WB, UK
4
Faculty of Engineering, Architecture and Design, Autonomous University of Baja California, Mexicali 21100, Mexico
*
Authors to whom correspondence should be addressed.
Energies 2022, 15(6), 2213; https://doi.org/10.3390/en15062213
Submission received: 14 February 2022 / Revised: 8 March 2022 / Accepted: 14 March 2022 / Published: 17 March 2022

Abstract

This study investigated an indirect evaporative cooling system (IECS) to control latent heat loss on roof ponds by increasing the evaporation rates on wet fabric membranes. The cooling potential of the proposed system was experimentally tested in a real environment and it was compared against a roof pond and a floating fiber (gunny bags) to provide an efficient model for buildings in hot and humid climates. Dry bulb temperatures (DBT) are presented for four experimental models. Solar irradiance, ambient and indoor dry bulb temperatures, and relative humidity (RH) were measured for seven days in each of the following climate conditions: hot sub-humid (mean DBT 27.3 °C and mean RH 72%), hot humid (mean DBT 27.1 °C and mean RH 81%), and warm sub-humid (mean DBT 25.2 °C and mean RH 68%). There were no significant variations in thermal performance between the examined devices under hot humid conditions; however, the wet fabric device had superior thermal performance under sub-humid conditions when compared to the other IECSs. In the three climatic scenarios where the proposed system was tested, the wet fabric managed to reduce the indoor air temperature by 6.6 °C, 5.3 °C, and 5.1 °C, respectively, as compared to the outdoor air temperatures.
Keywords: roof pond; passive cooling; wet fabric; experimental testing; indoor thermal performance roof pond; passive cooling; wet fabric; experimental testing; indoor thermal performance

Share and Cite

MDPI and ACS Style

Esparza-López, C.J.; Pozo, C.E.-d.; Al-Obaidi, K.M.; González-Trevizo, M.E. Improving the Thermal Performance of Indirect Evaporative Cooling by Using a Wet Fabric Device on a Concrete Roof in Hot and Humid Climates. Energies 2022, 15, 2213. https://doi.org/10.3390/en15062213

AMA Style

Esparza-López CJ, Pozo CE-d, Al-Obaidi KM, González-Trevizo ME. Improving the Thermal Performance of Indirect Evaporative Cooling by Using a Wet Fabric Device on a Concrete Roof in Hot and Humid Climates. Energies. 2022; 15(6):2213. https://doi.org/10.3390/en15062213

Chicago/Turabian Style

Esparza-López, Carlos J., Carlos Escobar-del Pozo, Karam M. Al-Obaidi, and Marcos Eduardo González-Trevizo. 2022. "Improving the Thermal Performance of Indirect Evaporative Cooling by Using a Wet Fabric Device on a Concrete Roof in Hot and Humid Climates" Energies 15, no. 6: 2213. https://doi.org/10.3390/en15062213

APA Style

Esparza-López, C. J., Pozo, C. E.-d., Al-Obaidi, K. M., & González-Trevizo, M. E. (2022). Improving the Thermal Performance of Indirect Evaporative Cooling by Using a Wet Fabric Device on a Concrete Roof in Hot and Humid Climates. Energies, 15(6), 2213. https://doi.org/10.3390/en15062213

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