Study of Large-scale Solar Dryers Equipped with Monitoring and Control Systems for Banana Drying

Authors

  • Orawan Aumporn Solar Energy Research Laboratory, Department of Physics, Faculty of Science, Silpakorn University, Nakhon Pathom 73000, Thailand
  • Rungrat Wattan Faculty of Science, Silpakorn University
  • Somjet Pattarapanitchai Faculty of Science, Silpakorn University
  • Mongkol Sangsan Faculty of Science, Silpakorn University
  • Serm Janjai Department of Physics, Faculty of Science, Silpakorn University

Keywords:

Solar Drying, Large-scale Solar Dryer, Banana, Monitoring and Control System, Mobile Phone

Abstract

This paper presents a study on the field performance of 18 large-scale greenhouse solar dryers equipped with remotely controlled monitoring and control systems. The dryers were built for the dried banana producers in Phitsanulok province in Thailand. These dryers were equipped with monitoring and control systems that allowed remote monitoring of operation parameters such as the drying air temperature, drying air relative humidity, and the weight and images of the bananas being dried through a mobile phone. In addition, the on-off controls of the LPG burners and AC fans were also controlled via a mobile phone. To investigate the performance of each dryer, 1200 kg of peeled bananas was dried in it. Bananas dried inside the dryers dried much faster than those dried outside the dryers that were under ambient conditions. Remote control of the monitoring and control systems using a mobile phone, facilitated a more convenient and efficient utilization of the dryers. An economic analysis of the dryers was also carried out. The results showed that the drying cost was 49 THB/kg, the payback period (without subsidy) was 4.88 years, and the internal rate of return was 16%.

References

Janjai, S., & Mahayoothee, B. (2016). Development of dried banana production in a dried banana community of Bangkratum District, Phitsanulok Province. Veridian E-Journal, Science and Technology Silpakorn University, 3(6), 310-322 (in Thai).

Nabard Consultancy Services. (2019). Greenhouse solar dryers on farming community in Tamil Nadu: Impact evaluation study, Report. Nabard Consultancy Services, Mumbai, India.

Srimaneechai, C., & Triwong, P. (2017, 31 May – 2 June). Study on the impact and value of promoting solar drying systems (Greenhouse model) from government. 13th Conference on Energy Network of Thailand, Chiangmai, Thailand (in Thai).

DEDE. (2015). Annual report. Department of Alternative Energy and Development, Ministry of Energy of Thailand, Bangkok.

Roman, F., & Hensel, O. (2014). Real-time product moisture content monitoring in batch dryer using psychrometric and airflow measurement. Computer and Electronics in Agriculture, 107, 97-103.

Al-Ali, A.R., Nabulsi, A.L., Mukhopadkydy, S., Awal, M.S., Fernandes, J., & Ailabonni, K. (2019). IoT-solar energy powered smart farm irrigation system. Journal of Electronic Science and Technology, 17, 100017-100031.

Dhere, P.S., Jadhav, V.N., Waghmare, P.K., & Lad, S.S. (2019). Solar water pumping system and dryer using IoT. International Research Journal of Engineering and Technology, 6(2), 1300-1305.

Audsley, E., & Wheeler, J. (1978). The annual cost of machinery calculated using actual cash flows. Journal of Agricultural Engineering Research, 23, 189-201.

Dhanushkodi, S., Wilson, V.H., & Sudhakar, K. (2015). Life cycle cost of solar biomass hybrid dryer systems for cashew drying of nuts in India. Environmental and Climate Technologies, 15, 22-33.

Park, C.S. (2013). Fundamentals of Engineering Economics (Third Edition). Essex, UK: Pearson Education Limited.

Janjai, S., Chaichoet, C., & Intawee, P. (2005). Performance of a PV-ventilated greenhouse dryer for drying bananas. Asian Journal on Energy and Environment, 6(2), 133-139.

Barbosa‐Cánovas, G.V., Fontana, Jr., A.J., Schmidt, S.J., & Labuza, T.P. (2020). Water Activity in Foods : Fundamentals and Applications (Second Edition). Chicago, USA: John Wiley & Sons.

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Published

2021-12-27

How to Cite

Aumporn, O., Wattan, R., Pattarapanitchai, S. ., Sangsan, M. ., & Janjai, S. (2021). Study of Large-scale Solar Dryers Equipped with Monitoring and Control Systems for Banana Drying. Journal of Renewable Energy and Smart Grid Technology, 16(2), 1–16. Retrieved from https://ph01.tci-thaijo.org/index.php/RAST/article/view/244529

Issue

Vol. 16 No. 2 (2021): July-December

Section

Articles

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