Design Fabrication and Testing of a Double-Pass Solar Air Heater

2020 ◽  
pp. 529-536
Author(s):  
I. V. Kumar ◽  
M. Mohan Jagadeesh Kumar
Keyword(s):  
Solar Air Heater ◽  
Double Pass ◽  
Air Heater

PERFORMANCE ANALYSIS OF DOUBLE PASS COUNTER FLOW SOLAR AIR HEATER FOR DRYING APPLICATION

2018 ◽  
Author(s):  
D.V.N. Lakshmi ◽  
Palanisamy Muthukumar ◽  
Dr.Apurba Layek ◽  
Abhimanyu Kumar Singh ◽  
Sushoban Das
Keyword(s):  
Performance Analysis ◽  
Solar Air Heater ◽  
Double Pass ◽  
Counter Flow ◽  
Air Heater

The effect of using transverse fins on a double pass flow solar air heater using wire mesh as an absorber

Solar Energy ◽  
2011 ◽  
Vol 85 (7) ◽  
pp. 1479-1487 ◽  
Author(s):  
M.F. El-khawajah ◽  
L.B.Y. Aldabbagh ◽  
F. Egelioglu
Keyword(s):  
Wire Mesh ◽  
Solar Air Heater ◽  
Double Pass ◽  
Air Heater

scholarly journals Evaluation on the Performance of Cross-Matrix Absorber Double-Pass Solar Air Heater (CMA-DPSAH) with and without Thermal Energy Storage Material

2020 ◽  
Vol 70 (2) ◽  
pp. 37-49
Author(s):  
Ahmad Fadzil Sharol ◽  
Amir Abdul Razak ◽  
Zafri Azran Abdul Majid ◽  
Muhammad Amirul Azwan Azmi ◽  
Muhammad Amir Syahiran Muhammad Tarminzi
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Solar Air Heater ◽  
Storage Material ◽  
Double Pass ◽  
Air Heater ◽  
Energy Storage Material ◽  
Thermal Energy Storage Material

Experimental study on double pass solar air heater with fins at lower and upper channel

2020 ◽  
Vol 21 ◽  
pp. 578-583 ◽  
Author(s):  
G. Murali ◽  
B. Sai Nandan ◽  
N. Sampath Kumar Reddy ◽  
D. Teja ◽  
N. Kalyan Kumar
Keyword(s):  
Experimental Study ◽  
Solar Air Heater ◽  
Double Pass ◽  
Air Heater

Evaluating the Performance of a Modified Solar Air Heater With Pierced Cover and Packed Mesh Layers

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
Raheleh Nowzari ◽  
Hasan Saygin ◽  
L.B.Y. Aldabbagh
Keyword(s):  
Airflow Rate ◽  
Solar Air Heater ◽  
Centrifugal Fan ◽  
Construction Costs ◽  
Double Pass ◽  
Counter Flow ◽  
Single Pass ◽  
Air Heater ◽  
Current Design ◽  
Thermohydraulic Efficiency

Abstract An experimental study was conducted to evaluate the thermal efficiency of a modified solar air heater. In the current design, air enters the collector through holes in front glass, passes through mesh layers, and exits at the backside of the air heater. A centrifugal fan was used to circulate air through the system. The design offers low construction costs and less solar radiation reflected from the collector. The modified collector was examined with various bed heights (30, 50, and 70 mm) and different mass flowrates of air varying from 0.011 kg/(s m2) to 0.043 kg/(s m2). The results showed that a counter flow collector with pierced cover had 5.6–9.7% higher efficiency than the single-pass one. The average efficiencies of the current design collector were found to be 55.2%, 44.6%, and 39.7% for the single-pass and 60.8%, 50.9% and 45.4% for the double-pass collector at 30, 50, and 70 mm bed heights and airflow rate of 0.043 kg/(s m2), respectively. The thermohydraulic efficiency, temperature difference, and perforated cover surface temperature were analyzed at each test and their effects on the system performance were evaluated. The highest amount of pressure drop through the collector was measured in the collector with a 70-mm bed height and a maximum air flowrate.

The Influence of Internal Heat Storage Material and Longitudinal Fins on a Double-Pass Solar Air Heater Performance

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
H. Sivarathinamoorthy ◽  
G. Sureshkannan
Keyword(s):  
Heat Storage ◽  
Internal Heat ◽  
Solar Air Heater ◽  
Storage Material ◽  
Double Pass ◽  
Air Heater ◽  
Sunshine Hours ◽  
Heat Storage Material ◽  
Solar Intensity ◽  
Overall Performance

Abstract This study presents the overall performance of a double-pass solar air heater (DPSAH) with three different configurations: (i) double-pass solar air heater without fins and heat storage (DPSAHWF), (ii) double-pass solar air heater with longitudinal fins and without heat storage (DPSAHLF), and (iii) double-pass solar air heater with longitudinal fins and heat storage (DPSAHLFHM). Five longitudinal fins on the upper channel and granular carbon at the bottom of lower channel as heat storage material were used for the analysis. Each configuration was examined for the following flowrates of air (ṁ1 = 0.008 kg/s, ṁ2 = 0.012 kg/s, and ṁ3 = 0.016 kg/s). The results show an improvement in thermal efficiency with an increase in the air flowrate. The outlet air temperature increases considerably with a decrease in flowrate, for all the three orientations. The lowest and the highest efficiencies during the peak sunshine hours were recorded as 33% and 65% for the conventional heater and the heater with fins and heat storage material, respectively. A maximum of 849 W/m2 of solar intensity was recorded during the test period. The system is also examined for thermal discharge after the sunshine hours to determine the effectiveness of the heat storage material.

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