EVALUATE THERMAL PERFORMANCE OF SOLAR AIR COLLECTORS

Fouda, T. Z.; Darwesh, M. R.; ELhosary, N. Sh.

doi:10.21608/mjae.2018.95806

EVALUATE THERMAL PERFORMANCE OF SOLAR AIR COLLECTORS

Document Type : Original Article

Authors

¹ Prof. of Agri. Eng. Dept., Fac. of Ag., Tanta. Univ., Egypt.

² Associate Professor. in Agric. Eng, Dept., Fac. of Ag., Tanta univ., Egypt.

³ Demonstrator in Agric. Eng, Dept., Fac. of Ag.,Tanta univ., Egypt.

10.21608/mjae.2018.95806

Abstract

Solar energy has an important place in sustainable and clean energy sources. Solar collectors can play a vital role among applications of solar energy system. Solar collectors are divided into solar air heating collector (SAHC) and solar water heating collector (SWHC) according to the fluid used. Although its efficiency is low because of air’s worse thermodynamic properties in terms of heat exchange compared to liquid, SAHC is still widely used in the world for the advantages of simple structure, convenient installation and easy maintenance. The absorber surface material is the most important parameter in the design for solar air collectors. The present study aimed to evaluate the thermal performance of solar air collectors. The treatments under this study were three types of solar panels absorbent. Stainless steel, aluminum and iron) and three different air velocities of 1.7, 2.4 and 3.6 m/s represented. Stainless steel solar panels absorbent give the highest value of absorption efficiency, useful heat gain to storage and overall thermal efficiency and they were 86.4, 71.42 and 59.87 %, respectively at midday air flow inlet temperature (Tai =31.7 C°), air flow outlet temperature (Tao =49.9 C°) and Average plate temperature (Tpm =70 C°) at 2.4 m/s fan velocity.

Main Subjects

Biosystems Engineering

References

Basumatary, B.,Roy.,M.Basumatary, S. Nazary., U. Deuri., Nayak and N. Kumar.(2013). Design, construction and calibration of low cost solar cabinet dryer.International Journal of Environmental Engineering and Management,4(4): 351-358

Bayrak F. and Hakan F. Oztop (2015). Experimental analysis of thermal performance of solar air collectors with aluminum foam obstacles. Isı BilimiveTekniğiDergisi, 35, 1, 11-20, 2015 J. of Thermal Science and Technology TIBTD Printed in Turkey ISSN 1300-3615

Emara,R.Z. ;M.M,Abo-Habaga and M.M,El-Kholy (2010). A study on handling some fooder crops.M.Sc.in Agricultural sciences (Agric.Eng.)Mansoura University, Egypt.

Forson, F. K., M. A. A. Nazha, F. O. Akuffo and h. Rajakaruna. (2017). Design of mixed -mode natural convection solar crop dryers: Application of principles and rules of thumb. Journal of Renewable Energy, 32(14):23062319

Hassanain, A.A. (2009). Simple Solar Drying System for Banana Fruit. World Journal of Agricultural Sciences 5 (4): 446-455, 2009. ISSN 1817-3047. © IDOSI Publications, 2009.

Jie Deng, Xudong Yang, YupengXu, Ming Yang (2017). Entransy analysis on the thermal performance of flat plate solar air collectors.BUILD SIMUL 10: 193–202

Saleh, A. A., T. A. Rashid (2016). Experimental and theoretical study for performance enhancement of air solarcollectors by using different absorbers. Al-Khwarizmi Engineering Journal, Vol. 12(3): 110- 120

Saxena,A. and V. Joel (2013). Solar air heaters with thermal heat storages ,chinese journal of engineering ,volume 2013,articles ID 190279

Shuilian Li, Hui Wang, Xiangrui Meng and Xinli Wei (2017). Comparative study on the performance of a new solar air collector with different surface shapes. Applied thermal engineering 114 (2017) 639–644