Experimental Investigation on Indirect Mode Double Pass Natural Convection Solar Dryer with different Configurations of Absorber Plate (Radish)

The performance of a double pass solar air heater was experimentally investigated using four different configurations. First configuration contained only absorber plate whereas copper tubes filled with thermal storage medium (paraffin wax) were added on the absorber plate in the second configuration. Aluminum and steel rods as thermal enhancer were inserted in the middle of paraffin wax of each tube for configurations three and four respectively. Second configuration provided useful heat for about 1.5 hours after the sunset compared to first configuration. Configurations three and four provided useful heat for about 2 hours after the sunset. The maximum efficiency of about 96% was achieved using configuration three (i.e. using Aluminum rods in the middle of copper tubes filled with paraffin wax).

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Experimental Investigation of Thermal Performance of a Single and Double Pass Solar Air Heater with Arc Like Structures as the Absorber Plate

Journal of Computational and Theoretical Nanoscience ◽

10.1166/jctn.2017.6643 ◽

2017 ◽

Vol 14 (7) ◽

pp. 3410-3415

Author(s):

S. G. Sam Stanley ◽

K. Kalidasa Murugavel

Keyword(s):

Experimental Investigation ◽

Thermal Performance ◽

Solar Air Heater ◽

Absorber Plate ◽

Double Pass ◽

Air Heater

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Experimental Investigation of Drying Tomato in a Double Slope Solar Dryer Under Natural Convection

Lecture Notes in Mechanical Engineering - Advances in Mechanical and Materials Technology ◽

10.1007/978-981-16-2794-1_16 ◽

2022 ◽

pp. 179-190

Author(s):

E. Elavarasan ◽

Yogesh kumar ◽

R. Mouresh ◽

Sendhil Kumar Natarajan

Keyword(s):

Experimental Investigation ◽

Natural Convection ◽

Solar Dryer

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Experimental Studies on Natural Convection Open and Closed Solar Drying Using External Reflector

10.21203/rs.3.rs-357329/v1 ◽

2021 ◽

Author(s):

Abd Elnaby Kabeel ◽

Paul Durai Leon Dharmadurai ◽

Sathiyaseelan Vasanthaseelan ◽

Prof. Dr. Ravishankar Sathyamurthy ◽

Bharathwaaj Ramani ◽

...

Keyword(s):

Experimental Investigation ◽

Natural Convection ◽

Removal Rate ◽

Experimental Studies ◽

Heat Energy ◽

Moisture Removal ◽

Solar Drying ◽

Solar Dryer ◽

Drying Efficiency ◽

Food Dryer

Abstract This work presents the experimental investigation on a solar food dryer equipped with external reflectors to enhance the rate of drying efficiency by removing the moisture content available in the anchovy fish. A comparison on conventional open solar drying is carried out to assess the parameters such as drying efficiency, moisture removal rate, and heat energy required for drying the anchovy fish using the modified solar dryer using natural convection technique. The physical examination results on the dried products proved that using modified solar dryer, the dried product are free from insects, dust. Also, it is found that the loss of colour from the product is minimum while compared to conventional open solar drying. The results showed that the thermal efficiency of dryer 1 and dryer 2 are comparatively higher as compared to that of conventional open solar drying and found as 16.73 and 19.34 % respectively.

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