https://orcid.org/0000-0001-5420-4584
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ABSTRACT
Indoor air temperatures and energy consumption of residential building is increasing at an alarming rate. The design and development of passive and hybrid roof cooling systems with effective cooling techniques play a vital role in improving the thermal performance especially in arid regions. This study investigates the energy efficiency of five laboratory models of double skin passive and hybrid roof cooling systems. A comparative study on the thermal performance of these five systems reveals a highest 14.5°C (41%) and 69oC (79%) reduction in the room and roof surface temperature with double skinned evaporative cooling roof system with forced convection. Similarly, significant reduction in room air and roof surface temperatures are also observed with the other types of double skin passive and hybrid roof cooling systems in comparison with the reference system. The studies have conclusively proven that the double skin passive and hybrid roof cooling systems can appreciably reduce the indoor air and roof surface temperature of residential and commercial buildings.
Abbreviations
RM: Reference Model; SAV: Standard air ventilated; CAV: Composite insulator air ventilated; FAV: Cooling fan air ventilated; EAV: Evaporative cooling air ventilated; ERAV: Evaporative cooling with radiation reflector Air ventilated
Disclosure statement
No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
V. Vinod Kumar
Dr. Vinod Kumar holds a PhD degree in Mechanical Engineering from Nagpur University, India and Master of Technology from IIT Kharagpur, India. He has more than 18 years of academic and research experience in Indian and Omani Universities. In October 2009, he joined the Mechanical & Mechatronic Engineering Department, Sohar University as an Assistant Professor. Presently he is working as a program coordinator of Mechanical and Mechatronic Engineering Department. His research interest includes Passive cooling roofs, Energy conservation techniques, Cryogenic and Refrigeration systems, Solar portable refrigeration systems.
Nitin Raut
Dr. Nitin Raut holds a BTech in Chemical Technology from Amravati University, a Master in Chemical Engineering from Gujarat University, India and a PhD in Chemical Engineering from UDCT, India. He is involved in academics and research, since the last 18 years and is associated with professional organizations and engineering societies including the Environment Society of Oman. His major areas of research include passive cooling, measurement and monitoring of air and water pollution, control and management of water quality subject to salination.
Norie Akeel
Dr. Norie Akeel received the B.Sc. degree in Mechanical engineering from University of Sebha, in 2002, and the M.Sc. and Ph.D. degrees in mechanical and materials engineering from UKM, Malaysia. He joined Sohar University in 2014 as an assistant professor and his research interests includes cooling systems, passive cooling, corrosion, failure analysis, Composite Materials, Heat treatment, Finite Element Analysis.