Influence of shape factor and notch design of transverse trapezoidal shaped rib on thermal performance of solar air heater-a CFD study

2020 ◽  
Author(s):  
Manjunath M.S. ◽  
Gaurav Pal Singh ◽  
N. Akhil ◽  
Atul Singh
Keyword(s):  
Thermal Performance ◽  
Shape Factor ◽  
Solar Air Heater ◽  
Air Heater

Thermal Performance Analysis of a Rectangular Longitudinal Finned Solar Air Heater With Semicircular Absorber Plate

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Satyender Singh ◽  
Prashant Dhiman
Keyword(s):  
Thermal Performance ◽  
Numerical Solutions ◽  
Solar Air Heater ◽  
Duct Flow ◽  
Balance Equations ◽  
Absorber Plate ◽  
Ansys Fluent ◽  
Air Heater ◽  
Glass Cover ◽  
Good Agreement

Thermal performance of a single-pass single-glass cover solar air heater consisting of semicircular absorber plate finned with rectangular longitudinal fins is investigated. The analysis is carried out for different hydraulic diameters, which were obtained by varying the diameter of the duct from 0.3–0.5 m. One to five numbers of fins are considered. Reynolds number ranges from 1600–4300. Analytical solutions for energy balance equations of different elements and duct flow of the solar air heater are presented; results are compared with finite-volume methodology based numerical solutions obtained from ansys fluent commercial software, and a fairly good agreement is achieved. Moreover, analysis is extended to check the effect of double-glass cover and the recycle of the exiting air. Results revealed that the use of double-glass cover and recycle operation improves the thermal performance of solar air heater.

Influence on thermal performance of spiral solar air heater with longitudinal baffles

Solar Energy ◽  
2021 ◽  
Vol 225 ◽  
pp. 969-977
Author(s):  
Binguang Jia ◽  
Fang Liu ◽  
Xiao Li ◽  
Andi Qu ◽  
Qingfeng Cai
Keyword(s):  
Thermal Performance ◽  
Solar Air Heater ◽  
Air Heater
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