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Over the past century fossil fuels have provided most of our energy because these are much cheaper and more convenient than energy from alternative energy sources, and until recently environmental pollution has been of little concern. Also sun drying i.e. hot air usage is still the most common method used to preserve agricultural products in most tropical and subtropical countries. In this work, primarily solar air heater is studied along with different designs considerations and different layouts of solar heater. Development of model was done along with testing for different conditions. Experiential results were compared along different conditions. Compare to existing air heater modified heater has 40 % more efficiency. At last CFD is done for above said conditions and these results are compared with experimental results; and it’s found that those are well in agreement with each other.

Experimental Investigation of the Effect on Thermal Performance using Longitudinal Fins for Solar Air Heater