Flat micro heat pipe-based shell and tube storage unit for indirect solar dryer: a pilot study.

Autor: Abdelkader TK; College of Engineering, Huazhong Agricultural University, Shizishan Street, Hongshan District, Wuhan, 430070, China. tkg00@fayoum.edu.eg.; Agricultural Engineering Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt. tkg00@fayoum.edu.eg., El Salem A; College of Engineering, Huazhong Agricultural University, Shizishan Street, Hongshan District, Wuhan, 430070, China.; Soil Conservation Department, Desert Research Center, Cairo, 11753, Matariya, Egypt., Zhang Y; College of Engineering, Huazhong Agricultural University, Shizishan Street, Hongshan District, Wuhan, 430070, China., Gaballah ES; Agricultural Engineering Department, Faculty of Agriculture, Fayoum University, Fayoum, 63514, Egypt., Refai M; Agricultural Engineering Department, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt., Torki M; Department of Computer Engineering, Faculty of Electrical and Computer Engineering, Technical and Vocational University (TVU), Tehran, Iran., Fan Q; College of Engineering, Huazhong Agricultural University, Shizishan Street, Hongshan District, Wuhan, 430070, China.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Jul; Vol. 31 (34), pp. 46385-46396. Date of Electronic Publication: 2023 Jun 03.
DOI: 10.1007/s11356-023-27851-z
Abstrakt: Poria cocos has been dried in an indirect solar drying system composed of a roughened solar air heater (RSAH), a shell and tube storage unit assisted with flat micro heat pipes fins, and a drying chamber. The main novelty in this study is using FMHPs as fins in shell and tube storage unit with paraffin wax and lack of investigations on Poria cocos solar drying as medicinal material used in Chinese medicine. First and second laws of thermodynamics are used to assess the performance of the system and the results indicated that the RSAH average thermal ( η ) and exergy efficiency ( η Ex ) were 73.9% and 5.1%, respectively, with averaged incident solar radiation of 671 W/m 2 under airflow rate of 0.0381 m 3 /s. Furthermore, the storing system showed 37.6% as averaged overall η and 17.2% as averaged overall η Ex , as well as, discharging prolonged to 4 h with effective drying temperature. The overall η of the dryer was 27.6% with specific energy consumption (SEC) of 8.629 kWh/kg moisture. The payback period of the system is 1.7 years.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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