CONCEPTUAL DESIGN AND ANALYSIS OF A TRICYCLE MOUNTED SOLAR-POWERED PHOTOVOLTAIC COLD ROOM SYSTEM

Adebisi Akinola; A Akinsade; J. F. Eiche; M. O. Famodun

doi:10.4314/njt.v42i4.5

Authors

A. O. Akinola Department of Mechanical Engineering, Federal University of Technology, Akure, Nigeria.
A. Akinsade Department of Mechanical Engineering Olusegun Agagu University of Science and Technology, Okitipupa, Nigeria
J. F. Eiche Department of Mechanical Engineering Olusegun Agagu University of Science and Technology, Okitipupa, Nigeria
M. O. Famodun Department of Mechanical Engineering Olusegun Agagu University of Science and Technology, Okitipupa, Nigeria

DOI:

https://doi.org/10.4314/njt.v42i4.5

Keywords:

Cooling load, photovoltaic system, structural analysis, inverter, finite element

Abstract

Energy crisis in developing countries is worrisome, and this has made the preservation and transportation of medical and perishable food items a common problem. Most conventional refrigeration systems operate with electricity; however, there are regions where it is difficult or not cost efficient to provide electric service. Therefore, this research seeks to solve the problems of inconsistent, irregular and complete non availability of power supply required to keep food products and drugs refrigerated over a long period of time by designing a tricycle mounted solar-powered cold room. The tricycle mounted solar-powered cold room designed consists of a refrigeration system having a compressor, a condenser, an expansion valve and an evaporator; a solar system having a photovoltaic (PV) module, charge regulator, storage battery and DC to AC inverter; and a tricycle for easy distribution and safe delivery of refrigerated items. A comprehensive analytical design was performed on each of the systems and the design results showed that the solar-powered cold room has refrigerating cooling load, PV array size, battery cap, and inverter power of 986 W, 275 W, 94 kWh, and 8000 W respectively. A structural analysis was also carried out on the tricycle chassis using the finite element method on Autodesk Inventor software. The results showed that the maximum von misses stress experienced by tricycle chassis was 56.96 MPa which is significantly lower than the yield strength of the chassis material used in the design, indicating a robust structural integrity and can therefore be used to carry the loads that it will be subjected to without deformation.

References

Van Ruijven, B. J., Cian, E. D., and Wing, I. S. “Amplification of future energy demand growth due to climate change”, Nature Communications, 10:2762, 2019; pp. 1 – 12 https://doi.or/10.1038/s41467-019399-3

Zhao, H. “Energy Crisis: Natural Disaster and Man-Made Calamity”, Chapter Four in The Economics and Politics of China’s Energy Security Transition. Academic Press, 2019; 65 – 98

Althouse, A. D., Turnquist, C. H., and Branco, A. F. “Modern Refrigeration and Air Conditioning”, Goodheart-Willox; Twenty first Edition, Revised Textbook, 2019.

Hui, S. C. M. “Principle of Refrigeration”, SBS5311 HVARC II, 2017.

Maxim. “Refrigeration: Principles, Systems, and Applications”, 2023, https://www.cooling-heating-services.com/archives/2944

Aprea, C., Maiorino, A. and Babiloni A. M. “Refrigeration Systems and Applications”, Energies, 2019; 200pp https://doi.org/10.3390/ books978-3-03921-953-7

Almasri, R. A., Abu-Hamdeh, N. H., Esmaeil, K. K. and Suyambazhahan, S. “Thermal solar sorption cooling systems - A review of principle, technology, and applications”, Alexandria Engineering Journal, 61(1), 2022; 367 – 402. https://doi.org/10.1016/j.aej.2021.0 6.005

Fadi, A., Ghaith, R. and Onur Dag “Performance and feasibility ofutilizingsolar powered ice storage system for space cooling applications”, Energy Conversion and Management: X. Volume 16, 100319, 2022. https://doi.org/10/1016/j.ecmx.2022.100319.

Jiao, C.and Li, Z. “An Updated Review of Solar Cooling Systems Driven by Photovoltaic–Thermal Collectors”, Energies 16, 5331; 2023. https://doi.org/10.3390/en16145331

Akinola, A. O., Umar, S., Eiche, J. F. and Akinsade, A. “Development of Solar Operated Evaporative Refrigerating System”, Saudi Journal of Engineering and Technology. 7(6), 2022; 299 – 304.

Titiladunayo, I. F. and Shittu, R. A. “Design of a Microcontroller Based Automated Ice-cube Making Machine”, International Journal of Engineering and Applied Sciences (IJEAS); 5(10), 2018; 89-100

Khurmi, R. S. and Gupta, J. K. “A Textbook of Refrigeration and Air Conditioning”, Fifth Revised Edition, Eurasia Publishing House (P) Ltd. Ram Nagar, New Dehli – 110055, 2011.

Citarella, B., Viscito, L., Mochizuki, K. and Mauro, A. W. “Defrosting Frequency Optimization in a Cooling System: Minimization of Energy Consumption vs Reduction of the Number of On/Off Cycles per hour, Definition of a Methodology and Assessment of Commercial Methods Based on Experiments”, Applied Thermal Engineering, Volume 213, 118796, 2022.

Osore, O. and Ramonu, O. “The Design and Construction of an Iced Block Making Machine”, Proceedings of the 2nd International Conference, The Federal Polytechnic, Ilaro, 10th – 11th November, 2020, 1852 – 1864; 2021.

Khurmi, R. S. “Textbook of Refrigeration and Air Conditioning” Chand (S) & Co Ltd., India, Fifth Edition, 2018.

Yan, C. Y. “Introduction to Engineering Thermodynamics”, 1st Edition, 2022. Pressbooks (https://pressbooks.com)

Solar Town. “Choosing and Sizing Batteries, Charge Controllers and Inverters”, https://solartown.com/learning/solar-panels/ch oosing-and-sizing-batteries-charge- controllers -and-inverters-for-your-off-grid-solar-energy-s ystem/ Retrieved 5th November, 2023.

Kamiran, M. “Electric Vehicles and Smart Grids”, Chapter 10 in Fundamentals of Smart Grid Systems. Academic Press, 2023; 431 – 460. https://doi.org/10.1016/B978-0-323-9956 0-3-0002-8