Experimental study of heat transfer characteristics of an impinging jet solar air heater with fins

2019 ◽  
Vol 22 (4) ◽  
pp. 3641-3653 ◽  
Author(s):  
Abhishek Kumar Goel ◽  
S. N. Singh
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Impinging Jet ◽  
Solar Air Heater ◽  
Heat Transfer Characteristics ◽  
Air Heater ◽  
Transfer Characteristics

Numerical Heat Transfer Investigation in Solar Air Heater Channel with Wavy-Baffles

2014 ◽  
Vol 1051 ◽  
pp. 808-812
Author(s):  
Pongjet Promvonge ◽  
Watcharin Noothong ◽  
Chinaruk Thianpong
Keyword(s):  
Heat Transfer ◽  
Thermal Performance ◽  
Numerical Study ◽  
Simple Algorithm ◽  
Solar Air Heater ◽  
Heat Transfer Characteristics ◽  
Air Heater ◽  
Transfer Characteristics ◽  
Numerical Result ◽  
Smooth Channel

A numerical study is conducted to investigate the turbulent periodic flow and heat transfer characteristics in a channel fitted with sinusoidal wavy-baffles placed on upper and lower walls. The finite volume method is introduced and implemented with the SIMPLE algorithm. The flow structure, friction factor and heat transfer characteristics for different wavy-baffle configurations are evaluated. According to numerical result, the maximum thermal performance is found to be 1.22–1.66 times to smooth channel corresponding to the baffle a/H=0.75 and b/H=0.10. Consequently, the application of wavy-baffles can be utilized effectively to enhance the thermal performance of solar air heater.

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