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Amosun, Taiwo Semiu
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Automotive Engineering Engineering Mechanical Engineering

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Development of a 1kw Prototype Kerosene-Powered Vapour Absorption Refrigerator for Domestic Refrigeration Applications Amosun, Taiwo Semiu; Omoniyi Kaffo, Paul
Borobudur Engineering Review Vol 3 No 2 (2023): Industrial product applications
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/benr.v3i2.10209

Abstract

Vapour absorption is an attractive method of utilizing low grade energy directly for cooling. This work attempts to develop a kerosene-powered vapour absorption refrigerator for domestic refrigeration applications. It is designed to comprise five major components: evaporator, absorber, generator, pump and condenser and their capacities were determined to be 80W, 350W, 180W, 20W and 90W respectively. The refrigerator is a medium-size one and is designed for domestic purposes only. It uses ammonia and water as primary and secondary working fluids. Parts were designed, fabricated and assembled accordingly. Finally, the performance test was carried out and the refrigerator was able to achieve an evaporative temperature of 7oC and had actual coefficient of performance (COP) of 0.16. It also takes 35 minutes to cool 1litre of water at ambient temperature to 0oC. The operating temperature of the refrigerator is between 7oC to 43oC. General energy equation of the refrigerator gave 875.237KJ.
A Review on Automatic Tyre Pressure Control Technologies and Solar as Possible Energy Solution Amosun, Taiwo Semiu; Anisiji, Obiora Emeka
Borobudur Engineering Review Vol 4 No 02 (2024): Aplikasi Teknologi Industri
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/benr.v4i02.12314

Abstract

Tyre inflation pressure plays a crucial role in ensuring safe and economical driving. Automatic tyre inflation systems are designed to constantly maintain tyre pressure at the proper level. Different techniques exist to monitor, control and maintain tyre inflation pressure. Systems currently in development for tyre pressure control include dual tyre pressure equalizers, automatic tyre inflation system, central tyre inflation system as well as others which are in the prototype stage. In dual tyre pressure equalizer systems, a single sensor unit is mounted to the vehicle wheel end, monitoring the pressure in both tyres of a dual-tyre assembly, with a hose connection to each tyre valve stem. If pressure levels between the tyres do not match, either due to temperature warming of one tyre position versus the other, unequal loading, or slow air seepage, the system will attempt to bring the inflation pressure of the two tyres to the same level. Automatic tyre inflation systems monitor tyre inflation pressure relative to a pre-set target and re-inflate tyres whenever the detected pressure is below the target level. In central tyre inflation system, the driver can select the target pressure from an in-cab display, in order to raise or lower the tyre inflation level depending on the operating conditions of the vehicle. One of the greatest challenges in designing a tyre pressure control system is providing the required energy to power the system. This paper reviews some state-of-the-art tyre pressure control technologies. Then possibility of solar energy-powered solution reviewed. The proposed solar energy solution is for land vehicles used especially in arid region of the world.
Co-Authors Anisiji, Obiora Emeka Omoniyi Kaffo, Paul