Research Papers/Topics in Mechanical Engineering

DESIGN AND FABRICATION OF A SOLAR POWERED STIRLING ENGINE AS A WATER PUMPING MACHINE

Abstract As the world keeps evolving, the demand for electricity increases. The growing energy consumption leads to higher cost that many people, especially in Ghanaian rural areas, cannot afford. Thus, considering this, this paper focuses on designing a Stirling engine to pump water in homes. In order to contribute to the use of renewable energy with a low carbon footprint, concentrated solar energy will be used to power this system once it is implemented. As such this, source of power was c...

DESIGN AND FABRICATION OF A MULTIDECK GARI SIEVING MACHINE

Abstract Gari is a very important staple food made from cassava and is eaten in many parts of Africa. Gari has a granular nature and may contain different sizes of grains ranging from as small as 1 mm to as large as 6 mm. Depending on where and how gari is going to be eaten, specific particle sizes are desirable. The market value of gari is therefore reduced if a given sample to be bought has different grain sizes mixed together. To correct this, gari is often sieved into varying particle siz...

AN AUTOMATIC RETRACTABLE CLOTHES DRYING RACK

Abstract Working adults and university students find it difficult to complete their laundry in a day because of the unpredictable weather conditions in the tropics of West Africa. There are existing drying machines, but these machines are either not smart or they are hard to install and maintain and they cause easy damage to the clothes. In comparison to the United States where electric drying is mostly used, about 16 billion kW is consumed per year or 5.8% of the whole resident electricity c...

Evaluation of a Small Hydro/Photovoltaic Hybrid System Potential for Electricity Generation for Federal University of Technology, Owerri

CHAPTER ONE: INTRODUCTION 1 Background of the Study 1 Statement of the Problem 6 Objectives of the Study 7 Justification for the Study 8 Scope and Limitations of the Work 9 Scope 9 Limitations 9 CHAPTER TWO: LITERATURE REVIEW 10 2.1 Small Hydropower Systems 10 2.1.1  Types of Hydroelectricity Generation 13 2.1.1.1 Conventional Hydroelectricity 13 2.1.1.2 Run-of-the-river Hydroelectricity 14 2.1.1.3 Pumped-storage Hydrelectricity 15 2.1.1.4 Tidal Hydroelectricity 15 2...

Modeling And Evaluation Of A Passive Flat-Plate Solar Collector

ABSTRACT This work investigated the variation of top loss heat transfer coefficient with the emittance of the absorber plate, the collector tilt angle and air gap spacing between the absorber plate and the cover plate. The effects of the emittance of the absorber plate, the collector tilt angle and air gap spacing between the plate and the cover on the collector performance were also considered. Data collected from the thermosyphon solar water heater constructed by the National Centre for En...

Experimental and Numerical Study of Multi Hole Extrusion Process: A Comparative Study

ABSTRACT When comparing with other manufacturing technologies, the extrusion technology always stands out as it is known to be highly efficient in terms of producing products of superior quality with the least possible amount of wastage. With the ever-increasing cost of materials, energy and the competition in the market, it becomes almost necessary to device a model with the minimum number of trials and shortest lead time. A multi-hole extrusion process was hence devised to serve the above n...

DEVELOPMENT OF A FLAT PLATE SOLAR STORE

ABSTRACT The fabrication of the solar dryer was successful and test were carried out for various performance comparisons such as No-load and Load performance of the dryer and direct sun drying comparison and noticeable differences was noticed in the final moisture content such that the maximum temperature recorded in the drying chamber and solar collector for No-load are 44.5 and 52 respectively and also for when the cabinet is loaded the above stated temperatures are 66 and 76.5 for a highes...

DEVELOPMENT OF A CASSAVA MASH SIEVING MACHINE FOR GARI PROCESSING OPERATIONS

Limited or poor food separation techniques into fine particles for further processing cause post-harvest losses of food crops and initiates the problem of food and nutritional insecurity in Nigeria. In order to solve this problem, food crops need to be processed into a lasting and nutritious consumable form through the use of mechanization. Different materials in powder form or solid form are separated by using two-level screening machines. This machine can be used in different industries lik...

DESIGN OF SIX-STROKE INTERNAL COMBUSTION SPARK IGNITION ENGINE

ABSTRACT The rate at which energy is lost by human activities is enormous. There is need to work on how to generate more energy and minimize the usage of the generated energy. In an internal combustion engine, there is need to focus on gaining energy usage by using generated heat during combustion process. To reduce the energy usage, emission rate and improve the efficiency of four-stroke internal combustion spark ignition engine, the four-stroke internal combustion spark ignition engine is m...

Use of an exergetic approach to analyze the performance of a vapor compression refrigeration system using a refrigerant solution of a nanoparticle (TiO2), mineral oil, and R410a (base refrige

ABSTRACT This project illustrates the use of an exergetic approach to analyze the performance of a vapor compression refrigeration system using a refrigerant solution of a nanoparticle (TiO2), mineral oil, and R410a (base refrigerant). Exergy investigation is a thermodynamics strategy which allows for the assessment and improvement of a refrigeration system in terms of efficiency and performance with basis placed on the 2nd law of thermodynamics. The primary objectives of this project are to ...

Generation of electrical power through Gas turbine.

The major components of a gas turbine are compressor, combustors, turbine and generator. It operates by continuous drawing in fresh air into the compressor. The Air is then compressed to a high pressure in the compressor and discharge into the combustion. Here the air is missed with gas and burns continuous once ignited to increase its energy level at constant pressure. The high pressure and temperature combustion product enters an expansion turbine that converts the gas thermal energy into m...

Effect of seawater corrosion on medium Carbon steel 0.34%C and 0.36%C

This project covers a study of the effect of seawater corrosion on 0.34% and 0.36% carbon steel  compositions. Two (2) specimens (steel rods) of length 150mm (each) for both steel compositions were  obtained. Out of each was gotten four (4) specimens of 10mm length, 10mm diameter and two  (2) specimens of 50mm length, 10mm diameter. This yielded a total of twelve (12) samples. For  each steel composition, one (1) specimen of 10mm length and one (1) specimen of 50mm length  were heat trea...

Analysis of Longitudinal Aerodynamic Characteristics of an Aircraft M

Analysis of Longitudinal Aerodynamic Characteristics of an  Aircraft Model with and Without Winglet  Altab Hossain a *, Prithvi Raj Arora b , Ataur Rahman c , Abdul Aziz Jaafar b ,  A.K.M. Parvez Iqbal a a Department of Mechanical Engineering, University Industry Selangor, Jln Timur Tambahan, 45600 Batang Berjuntai,  Selangor Darul Ehsan, Malaysia b Department of Aerospace Engineering, University Putra Malaysia, Malaysia c Department of Mechanical Engineering, International Islam...

Design and Construction of a Model Power Generating Windmill

This project covers the design and construction of a power generating windmill. The designs was carried out based on long-term available wind data of bida at 10m above the ground level. The average wind speed for Bida is 5.24m/s and rated turbine wind speed is 6.29m/s. The design of each components of the system were carefully constructed in a well equipped workshop within the school premises. Calculations were done manually for each components of the system and the results was match with the...

Design of Next Generation Civil and Military Aircraft with Ultra-High Bypass Engine using Composites, Advanced Materials and Technology

Abstract Indirect combustion noise had not been attracting research in the past, but recent indication seems to prove that it could be a threat in the future if not addressed. Means of reducing this type of noise to a low decibel value was also included. Noise is due to the ingestion of distorted atmospheric turbulence, as the two set of blades rotate in different direction. Open rotor noise is higher since the rotors are fully exposed to oncoming turbulence and lack ducting or a nacelle to a...


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