Efficiency enhancement in double‐pass perforated glazed solar air heaters with porous beds: Taguchi‐artificial neural network optimization and cost–benefit analysis
Vaziri R. Oladipo A.A. Sharifpur M. Taher R. Ahmadi M.H. Issakhov A.
November-1 2021MDPI
Sustainability (Switzerland)
2021#13Issue 21
Analyzing the combination of involving parameters impacting the efficiency of solar air heaters is an attractive research areas. In this study, cost‐effective double‐pass perforated glazed solar air heaters (SAHs) packed with wire mesh layers (DPGSAHM), and iron wools (DPGSAHI) were fabricated, tested and experimentally enhanced under different operating conditions. Forty-eight iron pieces of wool and fifteen steel wire mesh layers were located between the external plex-iglass and internal glass, which is utilized as an absorber plate. The experimental outcomes show that the thermal efficiency enhances as the air mass flow rate increases for the range of 0.014–0.033 kg/s. The highest thermal efficiency gained by utilizing the hybrid optimized DPGSAHM and DPG‐ SAHI was 94 and 97%, respectively. The exergy efficiency and temperature difference (∆T) indicated an inverse relationship with mass flow rate. When the DPGSAHM and DPGSAHI were optimized by the hybrid procedure and employing the Taguchi‐artificial neural network, enhancements in the thermal efficiency by 1.25% and in exergy efficiency by 2.4% were delivered. The results show the average cost per kW (USD 0.028) of useful heat gained by the DPGSAHM and DPGSAHI to be relatively higher than some double‐pass SAHs reported in the literature.
Double‐pass collector , Glazed solar collector , Perforated solar air heater , Thermal efficiency , Wire mesh
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Faculty of Engineering, Cyprus Science University, Kyrenia, 99300, Cyprus
Polymeric Materials Research Laboratory, Chemistry Department, Faculty of Arts and Science, Eastern Mediterranean University, Famagusta, 99450, Cyprus
Department of Mechanical and Aeronautical Engineering, University of Pretoria, Pretoria, 0002, South Africa
Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, 404, Taiwan
Department of Mechanical Engineering, Faculty of Engineering, University of Science and Culture, Tehran, 1461968151, Iran
College of Engineering and Technology, American University of the Middle East, 220 Dasman, Egaila, 15453, Kuwait
Faculty of Mechanical Engineering, Shahrood University of Technology, Shahrood, 3619995161, Iran
Department of Mathematical and Computer Modelling, Faculty of Mechanics and Mathematics, Al‐Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Faculty of Engineering
Polymeric Materials Research Laboratory
Department of Mechanical and Aeronautical Engineering
Department of Medical Research
Department of Mechanical Engineering
College of Engineering and Technology
Faculty of Mechanical Engineering
Department of Mathematical and Computer Modelling
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