Experimental Study of Solar Air Heater Equipped with Longitudinal Fins aiming Thermal Performance Improvement

Experimental Study of Solar Air Heater Equipped with Longitudinal Fins aiming Thermal Performance Improvement
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© 2023 by IJETT Journal
Volume-71 Issue-2
Year of Publication : 2023
Author : Birendra Kumar, Ashutosh Kumar, Shailesh Ranjan Kumar, Ravi Kumar, Chandra Shekhar Singh Chandal, Saket Kumar Singh, Manoj Kumar
DOI : 10.14445/22315381/IJETT-V71I2P233

How to Cite?

Birendra Kumar, Ashutosh Kumar, Shailesh Ranjan Kumar, Ravi Kumar, Chandra Shekhar Singh Chandal, Saket Kumar Singh, Manoj Kumar, "Experimental Study of Solar Air Heater Equipped with Longitudinal Fins aiming Thermal Performance Improvement," International Journal of Engineering Trends and Technology, vol. 71, no. 2, pp. 315-322, 2023. Crossref, https://doi.org/10.14445/22315381/IJETT-V71I2P233

Abstract
For environments with mild to moderate temperatures, a solar air heater is a viable option. Home heating, agricultural drying, timber seasoning, and other commercial uses are all possible with a solar air heater. An investigation of the thermal efficiency of a solar air heater is carried out in this experiment. Inside the absorber plate, long, thin fins were added to increase the rate at which heat could be transferred. Fins were designed to be square. The fin had a pitch of 1 and 2 inches. Two varying rates of fluid mass flow of 0.00452 kg/s and 0.0014 kg/s with two different Reynolds numbers, 4577.46 and 10285.55, were used in the experiment. In this experiment, the investigation is focused on getting an insight into how changes in the rate of flow of air affected the solar collector’s outlet temperature, heat transfer through its thickness, and overall thermal efficiency. In comparison to collectors without fins, it was discovered that those with fins increased the temperature of outflow air, efficiency of collectors, and heat transfer performance.

Keywords
Solar air heater, Fin, Thermal efficiency, Reynolds number, Nusselt number.

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