Solar air heater : Thermal performance analysis.pptx

Solar air heaters are one of the important devices to utilize solar energy. It is an important device to convert solar energy into heat energy economically.

1. PERFORMANCE ANALYSIS OF SOLAR AIR HEATER Presented By – Prashant(232311011) Department of Mechanical Engineering, CAD/CAM CFD Lab Submitted to – Dr. Ashok K. Dewangan

2. INTRODUCTION Solar energy has emerged as one of the alternatives to conventional sources of energy. Solar air heaters are one of the important devices to utilize solar energy. It is an important device to convert solar energy into heat energy economically. But poor heat transfer coefficient is one of the major problems in solar air heater. This experimental work has been carried out to improve the thermal performance of solar air heater with rectangular fins placed on the absorber plate. Experimental results have been compared with the performance of conventional solar air heater without any projecting bodies. An improvement in efficiency and outlet temperature of air of SAH has been recorded. Integrated solar dryer for drying chamomile https://doi.org/10.1016/j.solener.2023.112091

3. LITERATURE REVIEW Review Paper: “ Recent developments and cost analysis of different configurations of the solar air heaters” E. El-Bialy , S.M. Shalaby Summary: In this work, the recent advances in practical and theoretical studies on solar air heaters are reviewed in detail. The low thermal efficiency is considered the main drawback of the solar air heater. For improvement two techniques are employed: First by increasing the heat transfer between the flowing air and the absorber plate. This can be achieved by increasing the heat transfer area by using finned or corrugated absorber plate, Second by using thermal storage material. Two categories of thermal energy storage material are commonly used: sensible heat storage, and latent heat storage. Finally, the cost analysis of some selected solar air heaters is presented . Result: I t is found that the corrugated air jet impinging absorber plate solar air heater is the best among the reviewed heaters. , ,  , ,  Integrated solar dryer for drying chamomile https://doi.org/10.1016/j.solener.2023.112091

4. LITERATURE REVIEW Emmanuel Omotosho , Philip Hackeny “ Performance prediction of single-pass and multi-pass low-cost solar air heater” Summary: This study introduces a mathematical model and experimental evaluation of solar air heating utilising an absorber surface constructed from low-cost upcycled materials. The solar heating system was modelled using upcycled beverage aluminium cans, considering both single and multi-pass flow configurations. This research highlights the potential of utilising waste materials to develop costeffective , solar heating solutions, contributing to energy management and waste reduction strategies. Conclusion: The multi-pass system demonstrated superior performance, delivering increased usable heat at elevated temperatures compared to the single-pass system. Exploded view of system frame and aluminum cans arrangement. https://doi.org/10.1016/j.tsep.2023.102322

5. LITERATURE REVIEW 3. Naeim Farouk, Azher M., Pradeep Kumar Singh, H. Elhosiny Ali, Bader Alshuraiaan , Van Giao Nguyen, Makatar Wae-hayee j, Dinh Tuyen Nguyen, M.A. El Bouz , “ Thermal performance analysis of artificially roughened solar air heater under turbulent pulsating flow with various wave shapes” Summary: The presents a thermal performance analysis of a solar air heater with artificially roughened surfaces. The study specifically focuses on turbulent pulsating flow and investigates the impact of various wave shapes on the heat transfer efficiency of the system. By employing artificially roughened surfaces, the research aims to enhance the heat transfer characteristics of the solar air heater. The exploration of turbulent pulsating flow and the consideration of different wave shapes contribute valuable insights into optimizing the thermal performance of solar air heaters, providing practical implications for applications in solar energy harvesting systems . Schematic of solar air heater https://doi.org/10.1016/j.csite.2022.102664

6. LITERATURE REVIEW 4. Alsanossi M. Aboghraraa , B.T.H.T. Baharudin , M.A. Alghoul , Nor Mariah Adam, A.A. Hairuddin , Husam A. Hasan “ Performance analysis of solar air heater with jet impingement on corrugated absorber plate” Summary: The study focuses on the performance analysis of a solar air heater featuring jet impingement on a corrugated absorber plate. The research evaluates the effectiveness of this system in harnessing solar energy for air heating purposes. Various parameters, such as the corrugation of the absorber plate and the impact of jet impingement, are analyzed to assess their influence on the overall performance of the solar air heater. The findings contribute to a better understanding of the system's efficiency and can potentially inform the design and optimization of solar air heaters for enhanced performance in utilizing solar energy for heating applications. Schematic diagram of proposed design of SAH https://doi.org/10.1016/j.csite.2017.04.002

7. INTRODUCTION Solar air heaters (SAHs) are major component of solar energy utilization system which absorb the incoming solar radiation, converts it into thermal energy, and transfers the heat energy to a fluid flowing through the absorber plate. Solar air heaters have been employed to deliver heated air at low to moderate temperatures for space heating, crop drying and other industrial applications. The lower thermal efficiency is main drawback of SAH. The fin bodies embedded with absorber is seen rarely. In this project, SAH with rectangular shaped fins embedded with absorber plate has been critically compared with SAH with plain absorber plate for thermal efficiency. The results obtained through CFD analysis using ANSYS tool have been compared and validated.

8. O UTCOMES There are three ways to improve the efficiency of SAH. By changing the type of material of absorber plate . By changing the type of fluid flow through Solar Air Heater. By changing the Surface Area of the absorber plate.

9. Material Properties S.No For Aluminium Value 1 Thermal Conductivity 202.4 W/m K 2 Melting Point 9 33.5 K 3 Boiling Point 2 792 K 4 Density 2 719 Kg/m3

10. MODELLING USING ANSYS A 3-D model is prepared in SOLIDWORKS and then is exported to ANSYS Design modular. A 3-dimensional fluid domain models have been prepared using ANSYS. Meshing is done with given boundary conditions . The boundary conditions applied are inlet is defined as velocity flow inlet while outlet is considered as pressure outlet. Absorber Plate is subjected to mixed type heat transfer. In the condition of mixed type heat transfer both convection and radiation are considered. Material selected for the plate is Aluminium .

11. PLATE WITH BROKEN-V PATTERN

12. MESH MODEL

13. OBSERVATIONS AFTER SIMULATION

14. OBSERVATIONS AFTER SIMULATION

15. OBSERVATIONS AFTER SIMULATION

16. CONCLUSION: The modelling and analysis of Solar Air Heater is performed using ANSYS with standard dimensions and properties applied to it. Absorber Plate of Solar Air Heater is designed with broken-V pattern to increase surface area with plate material as Aluminium . The temperature and pressure contour are taken to compare results. Finally, we conclude that Solar Air Heater with broken-V pattern gives more efficiency than flat plate.

17. REFERENCES E. El-Bialy , S.M. Shalaby “ Recent developments and cost analysis of different configurations of the solar air heaters” Solar Energy 265(2023) . Emmanuel Omotosho , Philip Hackeny “ Performance prediction of single-pass and multi-pass low-cost solar air heater” Thermal Science and Engineering progress 47(2024) 102322. Naeim Farouk, Azher M., Pradeep Kumar Singh, H. Elhosiny Ali, Bader Alshuraiaan , Van Giao Nguyen, Makatar Wae-hayee j, Dinh Tuyen Nguyen, M.A. El Bouz , “ Thermal performance analysis of artificially roughened solar air heater under turbulent pulsating flow with various wave shapes” Case Studies in Thermal Engineering 41(2023) 102664. Alsanossi M. Aboghraraa , B.T.H.T. Baharudin , M.A. Alghoul , Nor Mariah Adam, A.A. Hairuddin , Husam A. Hasan “ Performance analysis of solar air heater with jet impingement on corrugated absorber plate.” Case Studies in Thermal Engineering 10(2017) 111120

18. THANK YOU