NUMERICAL INVESTIGATION OF HEAT TRANSFER COEFFICIENT AND FRICTION FACTOR OF SOLAR AIR HEATER PROVIDED WITH ISOSCELES RIGHT TRIANGLE RIB ROUGHNESS ON THE ABSORBER PLATE

2017 ◽  
Vol 14 (1) ◽  
pp. 69-96 ◽  
Author(s):  
Rajeev Ranjan ◽  
M. K. Paswan ◽  
N. Prasad ◽  
R. V. Sharma
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Friction Factor ◽  
Numerical Investigation ◽  
Solar Air Heater ◽  
Absorber Plate ◽  
Air Heater

scholarly journals Performance Analysis of Solar Air Heater using CFD Simulation

2018 ◽  
Vol 8 (01) ◽  
Author(s):  
Ambreesh Prasad Shukla ◽  
Rakesh Kushwaha ◽  
Bhupendra Gupta ◽  
Anand Bisen
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Solar Energy ◽  
Transfer Coefficient ◽  
Cfd Simulation ◽  
Solar Air Heater ◽  
Outlet Temperature ◽  
Absorber Plate ◽  
Air Heater ◽  
Research Article

Solar energy has emerged as one of the alternate to conventional sources of energy. Solar air heaters are one of the important devices to utilize solar energy. But, poor heat transfer coefficient is one of the major problem in solar air heater. In this research article, an attempt is made to increase heat transfer coefficient of solar air heater by putting Hollow bodies over the absorber plate. These resulted in increase in heat transfer coefficient, efficiency and increase in outlet temperature of air simultaneously

Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater

2014 ◽  
Vol 8 (2) ◽  
pp. 160-172 ◽  
Author(s):  
Foued Chabane ◽  
Nesrine Hatraf ◽  
Noureddine Moummi
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Solar Air Heater ◽  
Air Heater

scholarly journals Enhanced Solar Air Heaters For Crop Drying

2021 ◽  
pp. 1-5
Author(s):  
Kamlesh Sahu ◽  
◽  
Gyaneshwar Sanodiya ◽  
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Roughness Element ◽  
Air Flow ◽  
Thermal Capacity ◽  
Solar Air Heater ◽  
Artificial Roughness ◽  
Transfer Coefficients ◽  
Absorber Plate

Solar air heaters are placed on farms to provide heat for the drying of grain and crop harvesting and harvesting. The results of the thermal study showed that solar air heaters are capable of providing a sufficient increase in air temperature under the majority of crop drying circumstances studied. The restricted thermal capacity of air, as well as the low heat transfer coefficient between the absorber plate and the air flow via the ducting system, both contribute to the overall thermal efficiency of solar air heaters. Solar air heaters must be more efficient in order to be more affordable. This may be accomplished by increasing the heat transfer coefficient between the absorber plate and the air flow passing through the duct. More heat transfer coefficients can be increased by using either active or passive approaches. In most situations, it may be cost-effective to use solar air heaters and incorporate artificial roughness on the absorber plate. The rate of heat transmission from the solar air heater’s duct to the fluid flow may be increased by creating artificial roughness on the surface of the duct. The study focused on several roughness element geometries for solar air heater ducts, and the results indicated that there is a link between the two. This paper attempts to find ways to artificially increase the heat transfer capacity of solar air heaters’ ducts by using element geometries which have been utilised in solar air heaters’ heat transfer devices.

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