MAINTENANCE OF A 1.5 HP SPLIT UNIT AIR-CONDITIONER: Residential and commercial space cooling demands are increasing steadily throughout the world as what once was considered a luxury is now seemingly a necessity. In the school of engineering Imo State Polytechnic there are many split unit system, but is not all that is functioning well. This is as a result of lack of maintenance, which is aprove in the breakdown of the split unit system. The quality and effectiveness of the materials were checked very well a referred to the split unit system maintenance. In the course of the maintenance, suitable tools such as manifold gange and the quality of equipment were put into consideration...{read more to download full material} 

CONSTRUCTION AND FABRICATED OF A MOBILE DEEP FREEZER: This work on the construction and fabrication of a mobile deep freezer revolves around the concept of refrigeration. The concept of refrigeration revolves around the reverse Carnot cycle. This is  a cycle involving isentropic expansion (at the throttling valve), isothermal expansion (at the evaporator), isentropic compression (at the compressor) and isothermal compressor ( at the condenser) Compression raises the temperatures of the refrigerant above that of its natural surrounding so that it can give up its heat in a heat exchanger to a heat sink such as air or water (condenser). Expansion lowers the refrigerant temperature below the temperature that is to be produced inside the cooling compartment....{read more to download full material}

CONSTRUCTION AND FABRICATED OF AN ICE-BLOCK MAKING MACHINE:This work is titled construction and fabrication of an ice block making machine. Ice block making machine revolves around the concept of refrigeration. The concept of refrigeration revolves around the reverse Carnot cycle. This is a cycle involving isentropic expansion (at the throttling valve), isothermal expansion (at the evaporator), isentropic compression (at the compressor) and isothermal compressor ( at the condenser) Compression raises the temperatures of the refrigerant above that of its natural surrounding so that it can give up its heat in a heat exchanger to a heat sink such as air or water (condenser). Expansion lowers the refrigerant temperature below the temperature that is to be produced inside the cooling compartment...{read more to download full material}

DESIGN AND FABRICATION OF MOBILE FORGE BLOWER: In the early days, it was common for a blacksmith’s apprentice to use their lungs to blow air into a hollow tube, directly into the base of the fire. This method was not very effective as the majority of the oxygen they inhaled would get absorbed by the lungs, and the exhalation contained a lot of carbon dioxide which did not help the fire. Not only that – heavy breathing would quickly make apprentices dizzy from hyperventilation and could result in them passing out. Many apprentices would have begun their training before the age of ten. Life was tough for a blacksmith apprentice in those days, for sure. This was not an effective method. It was this reason that forge blower was introduced. The blower was designed to convert driver energy to kinetic energy by accelerating it to the outer rim of the impeller and the impeller driven by the connecting shaft adds the velocity component to the air by centrifugally casting the air away from the impeller vane tips...{read more to download full material}

DESIGN AND FABRICATION OF A MOBILE REFRIGERATOR: To contribute to the development of Engineering and Technology innovations. The research work carried out in this project will help greatly in that direction. We exphasised mainly on modern methods by which a refrigerator can be operated and maintained we also included the method used in design and fabrication, assembly and arriving at knowing the safety requirement.
During the process of production of this refrigerator, cost estimate is taken into consideration with durability of materials, portability of the product was also considered...{read more to download full material} 

DESIGN AND FABRICATION OF A MOBILE WATER SPRINKLER: Costs of taking a water sprinkler to a remote area is high. Moreover, the use of diesel fuel is also more expensive in the “new lands” due to the remoteness of desert farms or a place wire fire accident occur. Taking into account the costs of transportation, maintenance and overhauling of generators, using diesel will no longer be economically feasible or affordable for those farms in the near future. At the same time, Nigeria’s exporters lose competitiveness in the international market due to crop losses that were caused by lack of irrigation. High CO2 emissions, immense diesel spills into the soil and risky long distance transportation of diesel to the farms are just a few ecological downsides of diesel operated water pumps. This makes use mobile water sprinkler which allows the sprinkler to be move from one place to another when the need occurs. Movable water sprinkler is defined as a system that distributes water to targeted area...{read more to download full material}

DESIGN AND CONSTRUCTION OF MULTIPLE LATHE TOOL POST: A lathe tool post is a special clamping device that rigidly holds the lathe tool or tooling to the carriage of the lathe. A basic lathe tool post is designed to hold one turning or facing tool. More typically, a multiple lathe tool post might hold multiple tools, depending on the configuration of the lathe.
To use a multi-tool post, the lathe operator locks the desired tool into place, then locates the center line of the spindle with the cutting edge of the tool. The operator might need several attempts adjusting the tool post and tooling until the lathe tooling has been correctly centered. After it has been centered and clamped, the turning or facing tools should remain with the correct center line orientation while the new tools, also clamped by the same post, are bought into the cutting position...{read more to download full material}

80CM X 70CM X 50CM MOBILE DEEP FREEZER: Deepfreeze is a large home appliance that keeps its contents just below the freezing temperature. Freezers are electric and can be plugged into a standard household receptacle. A freezer is used for storing and extending the life of certain foods. There are various freezer capacity sizes on the market.  Freezer units are used in households and in industry and commerce. Food stored at or below −18 °C (0 °F) is safe indefinitely. Most household freezers maintain temperatures from −23 to −18 °C (−9 to 0 °F), although some freezer-only units can achieve −34 °C (−29 °F) and lower.
The need for an authentic and reliable report relating to the design and construction of 80cm x 70cm x 50cm mobile deep freezer is inevitable. It should be a top priority of every individual in order to avoid huge expenditure in purchase to foreign ones. Its for this reason that this report is written for the benefit of those who are privilege to design and construct their own deep freezer for used.
This report is base on ordinary and advanced level research, in order to aid easy reading and understood for an average person.
This report is divided into chapters, which discussed extensively, the introduction of mobile deep freezer, the introduction of mobile deep freezer, the history the practical refrigeration cycle with full attention given to design factors, working principle and choice of materials. The method use in fabrication, assembly and knowing the safety requirement. Subsequently, advanced information pertaining calculation about the project have been given in certain section of this report which will be beneficial to those interested in the design and construction of 80cm x 70cm x 50cm mobile deep freezer...{read more to download full material}

DESIGN AND CONSTRUCTION OF SOLAR DRYER : This work is titled design and construction of a solar dryer. Solar dryers are devices that use solar energy to dry substances, especially food. The solar drying system utilizes solar energy to heat up air and to dry any food substance loaded, which is not only beneficial in that it reduces wastage of agricultural produce and helps in preservation of agricultural produce, but it also makes transportation of such dried produce easy and promotes the health and welfare of the people. This paper presents the design and construction of a domestic passive solar food dryer. The dryer is composed of solar collector (air heater) and a solar drying chamber containing rack of four cheese cloth (net) trays both being integrated together. The air allowed in through air inlet is heated up in the solar collector and channeled through the drying chamber where it is utilized in drying (removing the moisture content from the food substance or agricultural produce loaded). The design was based on the geographical location which is Abeokuta and meteorological data were obtained for proper design specification. Locally available materials were used for the construction, chiefly comprising of wood (gmelina), polyurethane glass, mild steel metal sheet and net cloth for the trays...{read more to download full material}

DESIGN AND FABRICATION OF A DUST EXTRACTOR : In workshop, a good dust extraction system is essential. Dust can cause serious damage to health as well as reducing the effectiveness of your machine, or even causing damage to it.
In view of the above, we deemed it necessary that such a machine should be constructed to the Mechanical Engineering workshop to eradicate dust and thereby make the workshop environment clean and fit for students practical activities.
Man’s impact on global environment system especially in the area of dust extraction is now at a scale where it is disrupting.  These dust extractors varies in major ways.
The environmental degration is, in turn contributing to health threat in this part of the globe.  Unfortunately most factories, workshops which suppose to posses these machines for dust extractions a re not having them thereby making dust a very dangerous threat to man. 
Due to this ugly development it, is obvious that these factories and workshops can do little or nothing to protect our environment from this poor state.  It is therefore necessary that all and sundry should join the crusade of eradicating dust from our environment thereby making it clean.  Although before now people have tried to contribute their own quota in seeing to the end of the menace, get lack of interest, finance has posed a hindrance to the realization of this achievement...{read more to download full material}

DESIGN AND FABRICATION OF A FUEL TANK: This work is fuel tank. A fuel tank is a safe container for flammable fluids. Though any storage tank for fuel may be so called, the term is typically applied to part of an engine system in which the fuel is stored and propelled (fuel pump) or released (pressurized gas) into an engine. Fuel tanks range in size and complexity from the small plastic tank of a butane lighter to the multi-chambered cryogenic Space Shuttle external tank. Typically, a fuel tank must allow or provide the following:

Proper design and construction of a fuel tank play a major role in the safety of the system of which the tank is a part. In most cases intact fuel tanks are very safe, as the tank is full of fuel vapour/air mixture that is well above the flammability limits, and thus cannot burn even if an ignition source were present (which is rare)...{read more to download full material}

DESIGN AND FABRICATION GAS BURNER: Burners play an integral role in oil and gas well pads. They generate the heat necessary for separating the oil, gas and water mixture and to keep the gases in their vapor phase during transportation through pipelines. Burners typically use a portion of the gas coming out of the ground as the fuel to produce the flame for heating. The gases extracted from the ground enter the burner skid (commonly referred to as burner fuel train) at a high pressure and hence they need to be pressure controlled for use in burners. This work is on fabrication of a gas burner...{read more to download full material}

DESIGN AND FABRICATION OF GRAIN GRINDING MACHINE: A grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding, which is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on the wheel's surface cuts a small chip from the workpiece via shear deformation.
Grinding machine consists of a bed with a fixture to guide and hold the work piece, and a power-driven grinding wheel spinning at the required speed. The speed is determined by the wheel’s diameter and manufacturer’s rating. The grinding head can travel across a fixed work piece, or the work piece can be moved while the grind head stays in a fixed position.
Fine control of the grinding head or table position is possible using a vernier calibrated hand wheel, or using the features of numerical controls.
Grinding machines remove material from the work piece by abrasion, which can generate substantial amounts of heat. To cool the work piece so that it does not overheat and go outside its tolerance, grinding machines incorporate a coolant. The coolant also benefits the machinist as the heat generated may cause burns. In high-precision grinding machines (most cylindrical and surface grinders), the final grinding stages are usually set up so that they remove about 200 nm (less than 1/10000 in) per pass - this generates so little heat that even with no coolant, the temperature rise is negligible....{read more to download full material}

DESIGN AND FABRICATION OF HYDRAULIC SCREW JACK: Jack is a mechanical device used as a lifting device to lift heavy loads or apply great forces. A mechanical jack employs a screw thread for lifting heavy equipment. Hydraulic screw jacks are typically used for shop work, rather than as an emergency jack to be carried with the vehicle. Use of jacks not designed for a specific vehicle requires more than the usual care in selecting ground conditions, the jacking point on the vehicle, and to ensure stability when the jack is extended. Hydraulic jacks are often used to lift elevators in low and medium rise buildings....{read more to download full material}

PEPPER GRINDING MACHINE WITH A DUAL POWER SUPPLY (ELECTRICITY AND FUEL): The aim of the project is to construct a domestic grain grinding machine to be powered by electric  and fuel  through pulley and belt transmission.
The project is to perform mostly blending and grinding on grains e.g beans, maize, melon, millet and such other food crops.
In construction of the project, there are various factors that is being put into consideration.
i.The size specification 
ii.The power of the electric motor to be used
iii.The domestic operation which can be performed by the machine.
iv.The capacity of the machine...{read more to download full material}

FABRICATION OF PNEUMATIC CRANE:The lifting and repositioning of a load from a crane vessel induces large disturbing forces and moments that need to be compensated for so that the crane vessel's mean attitude in heel or trim remains close to level. This paper describes the design and operation of a pneumatic crane compensation system that is used to counteract crane disturbing forces. This project deals with the fabrication of pneumatic mobile crane. The project work is concerned with the fabrication of the portable jib crane. This machine is very useful for lifting and transporting heavy jobs upto two tons for all types of jobs such as automobile repairs and service shops of central workshops, production industries, material handling units....{read more to download full material}

RECTIFICATION AND REPAIR OF A FAULTY AIR CONDITIONER IN THE MECHANICAL ENGINEERING DEPARTMENT: Air conditioners are meant to keep your home cool, but they can have quite the opposite effect if malfunctions occur. Electrical and mechanical failures, such as a short circuit, are the leading cause of A/C-related fires. Routine inspection is the best defense against electrical mishaps, especially if your home has antiquated wiring.
This unit covers diagnosing, repairing faults and replacing faulty components in refrigeration and air conditioning systems, components, interconnecting circuits and equipment operating at voltages up to 1,000 V a.c. It encompasses working safely, reading electrical circuit diagrams, refrigeration, hydronic and air distribution system diagrams and manufacturers reference material, sketching diagrams from traced wiring and piping systems, applying logical fault finding procedures, conducting repairs, replacing components and completing the necessary service documentation....{read more to download full material}

REPAIR AND REHABILITATION OF A FAULTY AIR CONDITION: Air conditioning is the process of altering the properties of air to more comfortable conditions, typically with the aim of distributing the conditioned air to an occupied space to improve thermal comfort and indoor air quality. In common use, an air conditioner is a device that lowers the air temperature. The cooling is typically achieved through a refrigeration cycle, but sometimes evaporation or free cooling is used.
In the most general sense, air conditioning can refer to any form of technology that modifies the condition of air (heating, cooling, (de-)humidification, cleaning, ventilation, or air movement). However, in construction, such a complete system of heating, ventilation, and air conditioning is referred to as HVAC (as opposed to AC).
Many homes and offices uses the air-conditioner to cool he temperature in their respective homes.  So the maintenance of the air-conditioner should be a top priority of every individual in order to avoid huge expenditure in the repairs of the system.  It’s for this reason that this report is written for the benefit of those whom are privileged to own an air-conditioner in their respective homes.
This report is based on ordinary and advanced level research, in order to aid easy reading and understanding for an average person.  This report begins with an introduction into the relevance of an air – conditioner, the history, description of the important components of the air – conditioner, the general maintenance and regular maintenance an serving, one is expected to carryout for effective performance of the air-conditioner and the faults discovered together with the repairs carried out.
Subsequently, advanced information pertaining to the repairs and calculations involving a faulty air conditioner have been giving certain sections of this report, which will be beneficial to those interested in the repairs of the faulty air conditioner....{read more to download full material}

DESIGN AND FABRICATION OF STIRLING ENGINE: This project work is on stirling engine. Stirling engine operates by cyclic compression and expansion of air or other gas (the working fluid) at different temperatures, such that there is a net conversion of heat energy to mechanical work. More specifically, the Stirling engine is a closed-cycle regenerative heat engine with a permanently gaseous working fluid. Closed-cycle, in this context, means a thermodynamic system in which the working fluid is permanently contained within the system, and regenerative describes the use of a specific type of internal heat exchanger and thermal store, known as the regenerator. The inclusion of a regenerator differentiates the Stirling engine from other closed cycle hot air engines.
The Stirling engine is noted for high efficiency compared to steam engines, quiet operation, and its ability to use almost any heat source. The heat energy source is generated external to the Stirling engine rather than by internal combustion as with the otto cycle or diesel cycle engines. Because the Stirling engine is compatible with alternative and renewable energy sources it could become increasingly significant as the price of conventional fuels rises, and also in light of concerns such as peak oil and climate change. This engine is currently exciting interest as the core component of micro combined heat and power (CHP) units, in which it is more efficient and safer than a comparable steam engine....{read more to download full material}

DESIGN OF A TACHOMETER:This work is on design of a tachometer. Tachometer is device that measures the speed of rotation of a disk or shaft in motors or other machines or is a sensor device for measuring the rotation speed of an object such as the engine shaft in a car. Tachometers work on the principle that a motor which is operated as a generator produces a voltage according to the velocity of the shaft. A tachometer is also known as a RPM gauge, or rev-counter, or revolution-counter. Tachometers usually display the RPM (revolutions per minute) on an analog dial, however in recent times digital displays are becoming popular. The initial mechanical tachometers were used for measuring centrifugal force. Some of the features of tachometers include self-test diagnostics, built-in or self-calibration, timers, and counters. Control types and user interfaces include computer programmable interfaces, digital front panels or analog front panels. Available electrical outputs of tachometers include switch or alarm, analog modulated frequency, analog current and analog voltage...{read more to download full material}

DESIGN OF A DIGITAL TACHOMETER:A digital Tachometer is digital device which measure the speed of a rotating object. A rotating object can be a ceiling fan; it can be a car tyre etc. In this meter we just take no. of pulses for one minute then divide by 60, this gives the no. of pulses per min. And its reciprocal ie time for these pulses will be 60/N, where N are pulses for one minute. Then we apply these pulses(which in fact decide open gate time for counting the pulses of a clock signal). Now the no. of pulses of clock signal which are counted by a counter and divide by the open gate time (60/N) gives frquency of the of the rotating object. Since this frequency ie no. of pulses so this the original speed (rpm) of a rotating shaft...{read more to download full material}

THE DESIGN AND FABRICATION OF A IRON SHELLING MACHINE: A machine for corn Sheller is highly and greatly needed for consistence of usage of corn in local and international levels. With regards to this indispensable need, a corn-shelling machine is designed which operates to remove the corn grains and leaving the cobs intact.
In attainment to this design objective and aims, a proper considerations was given to the machinability factor which includes, installation, simplication, durability, choice material operational efficiently serviceability of the masculine low costing and prolonged life span when operates with utilization with minimal down fine  
The design details are given includes such items as materials and their characteristics. Adaptation methodology the parts relation with the whole device and the effect of the finished product upon which an inquisitive mind can make collection of fact in future which related to this project...{read more to download full material}

THE DESIGN AND FABRICATION OF AN ELECTRIC POPCORN FRYING MACHINE: The electrical popcorn machine is a device for preparing especial popcorn for the human consumption. The device in produced to help the masses to be self valiance in this are of down trodden economy.
This project work is divided into five chapters, chapter one; the introduction discusses the relevance of the project work, problems it is meant to address its importance, scope and limitation and definition of terms. 
Chapter two comprises the deign and construction, component and fabrication. The various types of heating elements and electric motors and then operation are discussed. 
Chapter three brings to the assembly, principles of operation and control of the motor. 
Chapter four highlights about the various safety rules project cost evaluation and investment opportunity. Chapter five discussed on insertion and testing recommendation and conclusion together with references and bibliography...{read more to download full material}

DESIGN AND CONSTRUCTION OF A VACUUM PUMP: A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. Positive displacement pumps use a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere. Momentum transfer pumps, also called molecular pumps, use high speed jets of dense fluid or high speed rotating blades to knock gas molecules out of the chamber. Entrapment pumps capture gases in a solid or adsorbed state. This includes cryopumps, getters, and ion pumps.
Positive displacement pumps are the most effective for low vacuums. Momentum transfer pumps in conjunction with one or two positive displacement pumps are the most common configuration used to achieve high vacuums. In this configuration the positive displacement pump serves two purposes. First it obtains a rough vacuum in the vessel being evacuated before the momentum transfer pump can be used to obtain the high vacuum, as momentum transfer pumps cannot start pumping at atmospheric pressures. Second the positive displacement pump backs up the momentum transfer pump by evacuating to low vacuum the accumulation of displaced molecules in the high vacuum pump. Entrapment pumps can be added to reach ultrahigh vacuums, but they require periodic regeneration of the surfaces that trap air molecules or ions. Due to this requirement their available operational time can be unacceptably short in low and high vacuums, thus limiting their use to ultrahigh vacuums. Pumps also differ in details like manufacturing tolerances, sealing material, pressure, flow, admission or no admission of oil vapor, service intervals, reliability, tolerance to dust, tolerance to chemicals, tolerance to liquids and vibration....{read more to download full material}

DESIGN OF A WASHING MACHINE:Laundering by hand involves soaking, beating, scrubbing, and rinsing dirty textiles. Before indoor plumbing, the housewife also had to carry all the water used for washing, boiling, and rinsing the laundry; according to an 1886 calculation, women fetched water eight to ten times every day from a pump, well, or spring Water for the laundry would be hand carried, heated on a fire for washing, then poured into the tub. That made the warm soapy water precious; it would be reused, first to wash the least soiled clothing, then to wash progressively dirtier laundry. Removal of soap and water from the clothing after washing was originally a separate process. First soap would be rinsed out with clear water. After rinsing, the soaking wet clothing would be formed into a roll and twisted by hand to extract water. The entire process often occupied an entire day of hard work, plus drying and ironing.
This work is based on a washing machine which is a machine to wash laundry, such as clothing and sheets. The term is mostly applied to machines that use water as opposed to dry cleaning (which uses alternative cleaning fluids, and is performed by specialist businesses) or ultrasonic cleaners....{read more to download full material}

DESIGN AND FABRICATION OF WOOD LATHE MACHINE: This write up outlines the design and fabrication of wood lathe machine. This type of lathe is capable of creating different wood designs using the cheapest available material and method.
To achieve functional and efficient wood lathe of this kind, we analyzed as well as synthesized the different possible design solutions and concepts.
The principle of turner is puts into consideration the case of its production, main finance and services, values durability, reliability and appearance of the machine.

Finally, the parts were assembled and the machine test runs. To ensure the achievement of best performance, iterative procedures were carried out. The material, labour and overhead costs were determined to get the production cost of a prototype....{read more to download full material}

AUTOMATIC CONVEYOR FOR INDUSTRIAL AUTOMATION: In this project we have to control the conveyor automatically by sensing the objects placed in the conveyor. Also, by using RPM sensor we have to control the speed the motor. The number of tags handled by the conveyor on the whole will be displayed simultaneously along with regulating the speed of conveyor. This project will save the power of motor operating the conveyor by regulating the conveyor automation, i.e. the conveyor actuates only when a tag is sensed.
Dynamic environments pose a challenge to the read performances of current RPM control systems. Moving tags on a conveyor belt affect the read performance of a static reader. Our project attempts to evaluate a static reader identifying moving tags on a conveyor belt. We propose an algorithm enabling the conveyor belt to dynamically adjust its speed according to the load automatically, also it reliably identify tags without prior knowledge of how tags are distributed on the conveyor belt. We show by simulations that our algorithm yields more than 99% of tags being successfully identified, along with trying to maximize the average speed of the conveyor belt. In addition, the algorithm can be applied for different reader's ranges. The number of tags handled by the conveyor on the whole will be displayed simultaneously along with regulating the speed of conveyor. This project will save the power of motor operating the conveyor by regulating the conveyor automation, i.e. the conveyor actuates only when a tag is sensed.
This Automatic Conveyor for Industrial Automation consists of two object sensors, rpm sensor, and rpm control circuit which controls the speed of the motor driving the conveyor. The object sensors which detect the objects sends signal to the motor driving circuit to on/off the motor....{read more to download full material}

FABRICATION OF A POLYTHIENE BAG SEALING AND CUTTING MACHINE: Previously, the packaging system has done by the use of paper, clothing material, etc. These methods are either given way to cellophane packaging system. Different types of packaging system emerged owing to the facts of invention of which the most commonly used is the cellophane packaging and sealing.
This machine is meant for sealing and cutting of nylon bag of different sizes. This machine is operated with electrical system. This machine can cut and seal nylon of different sizes. It also comprises of materials as follows: Mechanical and Electrical section. Mechanical section includes the frame structure, lever and the pedal mechanism.  Electrical section includes the transformer, Regular and the micro switch...{read more to download full material}

FABRICATION OF A PORTABLE CAMP BED: A camp bed is a small portable, lightweight bed used in situations where larger permanent beds cannot be used. The main advantage of this bed is its portability and compactness. Camp beds are generally used by armies or organizations, in tourism, and in emergency situations when there is a need to quickly provide accommodation for victims. Camp beds generally consist of a foldable lightweight wood or metal frame, covered with canvas, linen or nylon.
In this project, three (3) alternative design solutions were considered for the camp-bed.  The authors utilize the local raw materials (with cost consideration) for the comments.  The merits and demerits of each of the alternative with respect to the considered grip were also discussed and the solutions of the alternatives that best satisfied the limitations were selection, design and cost analysis, production process and operations maintenance and problem encountered during the design were also included...{read more to download full material}

DESIGN AND FABRICATION OF GRAIN DRYER: Drying of Seed Grain If grain is destined for use as seed then it must be dried in a manner that preserves the viability of the seed. Seed embryos are killed by temperatures higher than 40-42°C and therefore low temperature drying regimes must be used. Seed grain may be dried in any type of dryer provided that it is operated at a low temperature and preferably with higher air flow rates than generally used. It is essential that batches of grain of different varieties are not mixed in any way and therefore the dryers and associated equipment used must be designed for easy cleaning.
This work focuses of fabrication of a portable and movable grain dryer used for drying grains such as wheat, paddy, maize and sunflower....{read more to download full material}

THE DESIGN AND FABRICATION OF A GRAIN GRINDING MACHINE: A grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding, which is a type of machining using an abrasive wheel as the cutting tool. Each grain of abrasive on the wheel's surface cuts a small chip from the workpiece via shear deformation.
Grinding machine consists of a bed with a fixture to guide and hold the work piece, and a power-driven grinding wheel spinning at the required speed. The speed is determined by the wheel’s diameter and manufacturer’s rating. The grinding head can travel across a fixed work piece, or the work piece can be moved while the grind head stays in a fixed position.
Fine control of the grinding head or table position is possible using a vernier calibrated hand wheel, or using the features of numerical controls.
Grinding machines remove material from the work piece by abrasion, which can generate substantial amounts of heat. To cool the work piece so that it does not overheat and go outside its tolerance, grinding machines incorporate a coolant. The coolant also benefits the machinist as the heat generated may cause burns. In high-precision grinding machines (most cylindrical and surface grinders), the final grinding stages are usually set up so that they remove about 200 nm (less than 1/10000 in) per pass - this generates so little heat that even with no coolant, the temperature rise is negligible...{read more to download full material}

DESIGN AND FABRICATION OF A HEAT EXCHANGER: A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries, natural gas processing, and sewage treatment. The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air.
For efficiency, heat exchangers are designed to maximize the surface area of the wall between the two fluids, while minimizing resistance to fluid flow through the exchanger. The exchanger's performance can also be affected by the addition of fins or corrugations in one or both directions, which increase surface area and may channel fluid flow or induce turbulence....{read more to download full material}

DESIGN AND CONSTRUCTION OF A METALLIC BOOK SHELF: The importance of books is gaining new insight or perspectives on issues that matter to the reader that helps them to have a new understanding of the world around them. Readers can apply the insight in everyday life or as a way of building upon the knowledge that already encompasses their mind and enrich their lives.
Books are used recoding of what is happening or event that has already taken place which can be storing information it is useful and for the information that such books contained not to cost it support to be properly kept and these can be done when those books are kept in a cool dry place and a place free from rodents and insects attacked, this brings about the deign and construction of a metallic bookshelf that will be economically cheap and equally meet up its demands.  This project aims at designing and constructing a book metallic shelf hose capability will be to contain different standard sizes of books at minimum paces. What is taken into consideration in this project are the cost of its production, processes, and maintenance. Other considerable factors are the functional aspect of the plant/equipment and its durability as well as the reliability. Portability, stability and the physical appearance of the entire equipment...{read more to download full material}

THE DESIGN AND FABRICATION OF AN ELECTRIC POPCORN FRYING MACHINE:The electrical popcorn machine is a device for preparing especial popcorn for the human consumption. The device in produced to help the masses to be self valiance in this are of down trodden economy.
This project work is divided into five chapters, chapter one; the introduction discusses the relevance of the project work, problems it is meant to address its importance, scope and limitation and definition of terms.
Chapter two comprises the deign and construction, component and fabrication. The various types of heating elements and electric motors and then operation are discussed.
Chapter three brings to the assembly, principles of operation and control of the motor.
Chapter four highlights about the various safety rules project cost evaluation and investment opportunity.

DESIGN AND FABRICATION OF A PORTABLE MOBILE DRYER: In many countries of the world, the use of thermal systems in the agricultural area to conserve vegetables, fruits, coffee and other crops has shown to be practical, economical and the responsible approach environmentally.  Thermal heating systems to dry food and other crops can improve the quality of the product, while reducing wasted produce.  Under the module of Advance topics in mechanical engineering projects, we were assigned to design the low cost vegetable dryer. The design of portable mobile dryer consists of several steps and sequence procedure. This report consists of back ground about project and the first chapter covers the introduction about drying and our project. Second chapter covers the literature review. The third chapter consist with design methodology The forth chapter is written on materials and methods and fifth chapter gives cost estimation for the dryer, and also  covers conclusions and recommendations and final chapter consist with references.
This project report gives a great guideline about designing of low cost portable mobile dryer compare with the other competitive industrial food processing technique...{read more to download full material}