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- Title
The indirect solar dryers with innovative solar air heaters designs: A review article.
- Authors
Jobair, Hussein K.; Nima, Mohammed A.
- Abstract
The drying process is considered an effective technique for preserving foods and agricultural products from spoilage. Moreover, the drying process lessens the products' weight, volume, and packaging, which prompts a reduction in the products' transportation costs. The drying technique with solar energy represents an ancient method, still alluring due to solar energy abundance and cost‐effectiveness. In this article, the previous manuscripts concerned with studying and analyzing indirect solar dryer systems that utilize innovative solar air heaters (SAHs) are reviewed. The results and conclusions are discussed intensively to clarify the significance of utilizing this type of drying technique. The effect of many parameters on the thermal performance and efficiency of the dryer systems has been investigated. The investigated parameters included the incident solar radiation, air flow rates, outlet solar air heater temperature, absorber plate material, moisture content of the agricultural products, and the shape and configuration of the SAH. Moreover, the manuscript outlines the drying rate mathematical models that were used to validate the experimental findings. Based on the review, it is found that solar dryer systems with modified SAHs designs rather than flat plate SAH have considerable effects on enhancing thermal performance and efficiency.
- Subjects
SOLAR air heaters; SOLAR dryers; DRYING apparatus; SOLAR radiation; SOLAR energy; DRYING; AIR flow
- Publication
Heat Transfer, 2023, Vol 52, Issue 3, p2400
- ISSN
2688-4534
- Publication type
Article
- DOI
10.1002/htj.22789