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- Title
Recent trends and applications of evacuated tube solar collector in food processing and air heating: a review.
- Authors
Malakar, Santanu; Arora, Vinkel Kumar; Nema, Prabhat K.; Yadav, Vikrant
- Abstract
Solar energy demand is growing for future energy needs in different sectors to replace fossil fuels, which leads to a reduced carbon footprint and global warming. Evacuated tube solar collectors (ETSC) harness solar thermal energy for air heating, water heating, and drying in domestic and industrial sectors. The review paper comprises ETSC technology categorization, influencing factors like fin arrangement, integration of phase change material, tilt angle, solar radiation, and airflow rate on the performance of ETSC-based solar air heaters and dryers. The thermal performance parameters, like the collector efficiency, dryer efficiency, energy and exergy efficiency, thermal profile, zone temperature, relative humidity, heat loss during operations, etc., are reviewed. The developed ETSC-based air heating systems and solar dryers for drying agricultural products are performed effectively. However, research progress on improving the thermal performance integrated with nanofluids and phase change materials was discussed. CO2 mitigation analysis and global standards for ETSC-based air heaters and dryers are compiled. A large scope exists by use of solar air heaters (SAH) for food commodity drying with a suitable drying chamber and improving the designs of ETSC-based solar dryers. The work accomplished by various researchers has been analyzed in this study for prospective research gaps in the context of future design and development.
- Subjects
SOLAR heating; SOLAR air heaters; PROCESS heating; SOLAR thermal energy; PHASE change materials; SOLAR collectors; HYDRONICS; SOLAR chimneys
- Publication
Environmental Science & Pollution Research, 2024, Vol 31, Issue 12, p18119
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-022-25078-y