Thermal Performance Analysis of Solar Air Heater Having Rectangular Rib Configuration Using Numerical Modeling

2020 ◽  
Author(s):  
Ranjeet Kumar Singh ◽  
Pavan Kumar Pathak ◽  
Sanjeet Kumar ◽  
Dipendra Kumar



2019 ◽  
Vol 15 ◽  
pp. 100543 ◽  
Author(s):  
Muhammad Sajawal ◽  
Tauseef-ur Rehman ◽  
Hafiz Muhammad Ali ◽  
Uzair Sajjad ◽  
Ali Raza ◽  
...  


Author(s):  
R Kashyap ◽  
H Singh ◽  
D Kumar ◽  
A K Roy


2017 ◽  
Vol 5 (4) ◽  
pp. 320-333
Author(s):  
Gade Bhavani Shankar ◽  
P.S. Kishore

Solar energy constitutes one of the main alternatives for facing the energy problems of the future. Solar air heaters are used for applications at low and moderate temperatures. Such as crop drying, timber seasoning, space heating, and drying agriculture products. Artificial geometry applied on the absorber plate is the very efficient method to improve thermal performance of solar air heaters. The thermal efficiency of solar air heaters is generally poor due to low heat transfer coefficient between the absorber plate and air flowing in the collector. Thermal performance of the conventional solar air heater was studied under varying solar and ambient conditions in different months. At day time the solar heating system stored the thermal solar energy as sensible and latent heat.  A parametric study was done for 10 months for the climatic conditions of Visakhapatnam. The effect of change in the tilt angle, length and breadth of a collector and mass flow rate on the temperature of collector has been studied. The length of the collector is 2.1m and width of the collector is 1.1 m. the performance analysis of system shows potential of improving the thermal efficiency range is 31% to 47% .From the obtained results, graphs are drawn to assess the performance analysis of a conventional air heater.



2018 ◽  
Author(s):  
D.V.N. Lakshmi ◽  
Palanisamy Muthukumar ◽  
Dr.Apurba Layek ◽  
Abhimanyu Kumar Singh ◽  
Sushoban Das


2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Satyender Singh ◽  
Prashant Dhiman

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.



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