Performance study on a new solar air heater for space heating: A numerical and experimental study
Source abstract
Abstract
The need to address energy challenges and environmental pollution has led researchers to focus on utilizing solar energy. In this study, a new solar air heater collector system was developed that incorporates arc-shaped wire roughness and external airflow recycling. The system performance was evaluated under various conditions using energy conservation equations and a semi-analytical method for modeling. The results were validated, confirming the method’s accuracy. The findings revealed that the hybrid system significantly improved energy and exergy efficiencies at lower mass flow rates. Increasing the airflow recycle ratio up to 3 in conditions of constant roughness and low mass flow rates enhanced collector performance. However, at high flow rates and recycle ratios, exergy efficiency decreased due to increased pressure drop, despite a rise in energy efficiency, making it less effective than a simple collector system. The results show that the temperature increase is not so much from a mass flow rate of more than 0.05 kg/s. The existence of considered artificial roughness has caused an increase in temperature, especially in mass flow rates of less than 0.035 kg/s.
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Research context
OpenAlex topics: Heat Transfer Mechanisms · Fluid Dynamics and Turbulent Flows · Aerodynamics and Fluid Dynamics Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory of Renewable Energies and Materials (LREM), University Yahia Fares of Medea 1 , Médéa 26000,
Interdisciplinary Research Center for Sustainable Energy Systems (IRC-SES), King Fahad University of Petroleum and Minerals 2 , Dhahran,
Manipur International University 3 , Imphal, Manipur,
Renewable Energy Engineering Department, Engineering College, AL-albayt University 4 , Mafraq,
Department of Health & Allied Sciences, Arka Jain University 5 , Jamshedpur, Jharkhand 831001,
School of Basic & Applied Sciences, Shobhit University 6 , Gangoh, Uttar Pradesh 247341,
Department of Electronics and Communication Engineering, Faculty of Engineering and Technology, Jain (Deemed-to-be) University 7 , Bengaluru, Karnataka 560069,
Department of Electrical Engineering, Vivekananda Global University 8 , Jaipur, Rajasthan 303012,
Department of Nuclear and Renewable Energy, Ural Federal University Named after the First President of Russia Boris Yeltsin 9 , Ekaterinburg 620002,
Department of Technical Sciences, Western Caspian University 10 , Baku,
Department of Mechanical Engineering, Karpagam Academy of Higher Education 11 , Coimbatore 641021,
Department of Chemistry, Kabul University 12 , Kabul,
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