
Godwin AyetorKwame Nkrumah University of Science and Technology | KNUST · Department of Mechanical Engineering
Godwin Ayetor
Doctor of Philosophy
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38
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Publications (38)
Auto-rickshaws serve as one of the public transport modes for many Ghanaians. However, there is growing concern regarding their safety when used for commercial transport. Therefore, this study assessed the safety of Auto-rickshaw used for commercial public transport in Ghana through Delphi and safety matrix techniques. The study focused on major sa...
Electric vehicles (EVs) are revolutionizing road transport. They represented the most reliable and realistic option to decarbonize road transport in the last 10 years and look to be holding a promising future. EVs are in competition with internal combustion engine (ICE) vehicles, but they still have a lower performance, particularly in range, and t...
This study assessed the most pertinent themes connected to hydrogen fuel cells and vehicles through a biblio-metric analysis to thoroughly understand hydrogen fuel cell and vehicle technologies and comprehend the focus of current and future research directions. This study chose the Scopus database, which is considered the largest database containin...
This study evaluates the progress that African countries have made in their transition to e-mobility by ranking their transition readiness. This was accomplished by taking into account access to electricity, the quality of electricity supply, potential emission reductions, infrastructure maturity, EV market maturity (except for category L vehicles)...
Ghana recognizes that the energy and transportation sectors are key areas in reducing emissions. Consequently, Ghana seeks to transition all its road and rail mobility to electric by 2070. This first electric vehicle baseline study commissioned by the Ghana Energy Commission aims to assist in this focus by providing a clearer picture of the status...
Abstract The impact of the COVID pandemic has resulted in many people cultivating a remote working culture and increasing building energy use. A reduction in the energy use of heating, ventilation, and air-conditioning (HVAC) systems is necessary for decreasing the energy use in buildings. The refrigerant charge of a heat pump greatly affects its e...
This paper sets out to examine the economic and technical viability of LEVs in Ghana as a business model. It further examines the profitability of converted motorbikes which are adapted from ICE motorbikes. The business model is built on technical requirements of the ICE conversion in Ghana. The authors used a case study approach to analyze an exem...
The increasing effect of climate change as a result of CO2 emissions emanating from utilization of conventional energy resources is driving national and regional policies towards global energy transformation in all sectors, including the transportation sub-sector. Internal combustion engine vehicles (ICEV), which use fossil fuel are the main contri...
Ghana commits to reducing greenhouse gas emissions of 64 MtCO2 and reducing 2,900 premature deaths but has very low electric vehicle penetration. We used a total cost of ownership model to determine the cost of ownership parity of BEV compared to internal combustion engine vehicles (ICEV). The results show that BEV will not reach cost parity with I...
Reducing ambient air pollution could potentially prevent 1790 deaths a year in Accra alone. Vehicular emissions are a major source of air pollution, especially (PM) 2.5 , and a transition to battery electric vehicles (BEVs) is considered a solution to this. This paper estimates the cost per mile of electric vehicles compared with internal combustio...
Purpose of Review
This review focused on the role and potential of the electric vehicle fleet in decarbonization in Africa. The potential of electric vehicle diffusion across the continent was discussed, including the role of standard infrastructure, electricity accessibility, barriers, and opportunities.
Recent Findings
There are 10 million elect...
The study sought to determine the impact of Bui dam on poverty alleviation of affected persons in the Bui community. This included the identification of services and developments provided by Bui hydro plant management to the community, and the characterization of the Bui community to ascertain the areas for poverty alleviation.
The random sampling...
This case study investigates the total cost of ownership (TCO) of four plug-in electric vehicles (PEV) compared with an internal combustion engine vehicle (ICEV) in Ghana over 20 years. The TCO model incorporated the manufacturer’s suggested retail price (MSRP), tax, fuel cost, charging cost, maintenance cost, social cost, and residual value includ...
Shell mold casting processes are more cost-intensive in terms of equipment, raw materials, and skills than the sand-casting technique. Sand casting is practiced in Ghana to cast mainly corn mill plates and occasionally vehicle and machine parts that lack good surface finish, better dimensional accuracy, and require a lot of effort/energy to bring t...
The transportation of freight, via aviation, shipping, and heavy-duty trucks, plays a vital role in economic development but also accounts for nearly 10% of global greenhouse gas emissions, which could increase further in light of emerging economies and markets. This Voices asks: how can we catalyze a transition toward net-zero freight?
This study seeks to char and briquette various agricultural wastes to be used as fuel in cookstove. To realize this, charred briquettes were produced from various agricultural wastes such as rice husk, maize cobs, palm kernel shell, and sawdust using the fast pyrolysis method at three different particle sizes (0.6 mm, 1.8 mm, and 2.36 mm) and compa...
The estimated economic cost of premature deaths in 2013 from air pollution in Africa was USD 450 billion. The economic cost might become uncontrollable if radical policy changes are not implemented soon. Particulate matter emission is mostly attributed to road transport and power generation worldwide. This paper examines the state and adequacy of f...
Wind energy, as a sustainable energy option is gaining research attention due to its price competitiveness relative to conventional energy sources. This study presents the fabrication and testing of a low-cost wind turbine blade using bamboo fibre with recycled plastic. Bamboo fibre was extracted from raw bamboo and combined with adequately conditi...
Mortality rates from outdoor air pollution in African have increased by 57% over three decades. Studies have shown that pollution from motor vehicles are a major cause. But at least 85% of Africa’s vehicle fleet are used vehicles, some of which are obsolete with outdated technologies. This paper examines the present and future vehicle regulations i...
It is globally agreed that electrification of the transportation fleet will be a significant step in reducing greenhouse gas emissions. This study assesses the impact of replacing internal combustion engine bus with electric bus fleets in African countries. The assessment includes the impact of solar charging of an electric bus fleet. Emission fact...
This paper reviews vehicle standards in Ghana and other parts of Africa. The paper also considers the cost of ownership of electric vehicles in Ghana. Tesla Model 3, Tesla Model S, Nissan Leaf and Toyota Prius are compared to Toyota Corolla. The parameters considered are initial cost, maintenance cost (spare parts and labour),
fuel cost, and availa...
This paper reviews vehicle standards in Ghana and other parts of Africa. The paper also considers the cost of ownership of electric vehicles in Ghana. Tesla Model 3, Tesla Model S, Nissan Leaf and Toyota Prius are compared to Toyota Corolla. The parameters considered are initial cost, maintenance cost (spare parts and labour), fuel cost, and availa...
Recent developments in artificial intelligence (AI) modeling tools allows for envisaging that AI will remove elements of human mechanical effort from welding operations. This paper contributes to this development by proposing an AI tungsten inert gas (TIG) welding algorithm that can assist human welders to select desirable end factors to achieve go...
This works considered the possibility of using raw palm kernel oil as an alternative to petroleum diesel fuel in a VW engine. At present, very little results on engine durability tests of palm kernel oil use as a fuel has been recorded in literature. A Four-stroke indirect injection diesel engine with capacity of 314,280x 10³mm³ and compression rat...
This paper focuses on the effects of HEV (Hybrid-Electric Vehicles) Powertrains on fuel economy and overall system efficiency. Three different hybrid-electric powertrains: Series; Parallel and Combined have been simulated on ADVISOR by the use of MATLAB platform. Three drive cycles, Urban Dynamometer Driving Schedule (UDDS), New European Driving Cy...
Three energy storage systems, namely Nickel Zinc, Nickel Metal Hydride and Lithium ion batteries were simulated on ADVISOR (Advanced vehicle simulator) to determine their impact on fuel economy. ADVISOR, a drivetrain analysis tool developed in MATLAB/Simulink for comparing fuel economy and emissions performance and designed by the National Renewabl...
This paper investigates the effect of turbocharger on the performance and emissions of a four-cylinder engine-fueled petroleum diesel, straight palm kernel oil, and straight coconut oil. The performance was measured in terms of brake power, brake torque, brake-specific fuel consumption, and brake thermal efficiency. A naturally aspirated four-strok...
In this research work, the experimental investigation on effect of preheating on the performance and emissions of a direct injection diesel engine has been reported. Four different fuels were tested using the same diesel engine: crude palm kernel oil (CPKO), preheated crude palm kernel oil (PCPKO), palm kernel oil methyl ester (PKOME) and petroleum...
Injection parameters are known to impact most on diesel engine emissions and performance but there is little work in literature regarding the effect of injection parameters on biodiesel engine performance. Studies of the effect of injection timing and pressure on emissions and brake specific consumption has been carried out on a 48 kW, VW Polo, MK3...
Biodiesel blends with petroleum diesel have long been experimented on and considered good alternatives to petroleum diesel. Most blends considered biodiesel percentages of 20 and less. This work considered blending B100 of separate biodiesel feedstocks to determine their influence on improving physiochemical properties and engine performance. Palm...
In this study, the effect of H2SO4 on viscosity of methyl esters from Jatropha oil (JCME), palm kernel oil (PKOME) from Elaeis guineensis species, and coconut oil (COME) has been studied. Effect of methanol to oil molar mass ratio on yield of the three feedstocks has also been studied. Methyl ester yield was decreased by esterification process usin...
Characteristics of biodiesel from Palm Kernel Oil Methyl Ester (PKOME), Jatropha Curcas Methyl Ester (JCME) & Coconut Oil Methyl Ester (COME) and their blends have been determined to run in a compression ignition direct injection (CIDI) internal combustion engine. The vegetable oils of Ghanaian origin (PKOME, COME and JCME) were converted to biodie...