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Development of Thermoelectric Generator
Anshad A ; Tobin Thomas; Anand P N; Aswin Joseph; Geo Eucharist James
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 346 - 352
Thermoelectric generators (TEG) in internal combustion engine (ICE) powered vehicles has been focused as a green energy technology to improve fuel economy and consequently to reduce emission of the greenhouse gas of 〖CO〗_2.Only small amount of the fuel combustion energy is converted to mechanical energy, while about a large amount is wasted through exhaust gas. A recent study revealed that the fuel economy of ICE vehicles can be increased by up to 20% simply by capturing the waste heat of gas and converting about 10% of it to electricity. The possibility of energy conversion using a thermoelectric generator (TEG) to tap the exhaust heat energy. TEG is like a heat engine which converts the heat energy into electric energy and it works on the principle of Seebeck effect. The seebeck effect is the conversion of temperature directly into electricity. As this exhaust heat recovery system reduces the wastage of energy, it improves the overall efficiency of vehicle. This system is profitable in the automobile industry. Generated useful power is used to charge the vehicle battery, to power auxiliary systems and minor electronics in vehicles. Harvesting that waste heat energy with a thermoelectric generator decreases the electric generator load on the engine which in turn can increase the fuel efficiency while lowering its emissions.
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A Study on Employees Motivational Factors at Omega Health Care of Trichy
Dr. V.M ANITHA RAJATHI ; JAYAPRITHA. U
MBA
Year: 2016, Volume:2, Issue : 11
Pages: 353 - 355
Motivation is a set of courses or action that are concerned with a kind of strength that boost up the performance and directs towards accomplishing some definite goals. Without motivating their employees organizations can’t run and can’t achieve their goals. It is the descriptive survey addressed seven motivating factors in the context of employee motivation theory. To describe the ranked importance of the following seven motivating factors: ((1) Good working conditions, (2) challenging work, (3) wages, (4) job security (5) job promotion and growth within the organization, (6) Appreciation & Recognition of work done, (7) Management loyalty to employees. Data were collected through a well-structured questionnaire delivered to the employees of the organization. Findings of the study suggest that job security, good wages, and job promotion and growth within the organization are key factors to higher employee motivation. Purposefully designed reward systems that include job enlargement, job enrichment, promotions, internal and external stipends, monetary, and non-monetary compensation should be considered.
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Heat Transfer Characteristics inside a Bottom Heated Square Enclosure
Vineeth V.K ; Vibu Mammen Jacob; Linoj V Lalu; Ligit George; Stephen Jose Mathew
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 356 - 365
The present work deals with numerical study of natural convective heat transfer in a 2D square enclosure heated from below. The top wall is exposed to ambient temperature whereas the side walls are kept adiabatic. The study is conducted for different conducting mediums inside. The conducting mediums considered for the study are air and Al2O3-water nanofluid. Simulations are run for a Rayleigh Number variation of 5x107 to 25x107. The heat transfer rate is found to increase with increase in hot wall temperature. For air, the thermal interactions are achieved through bulk motion of fluid. For Al2O3-water nanofluid, the mechanism of heat transfer is attained through local fluid interactions. But the nanofluids are also found to exhibit bulk movement at higher hot wall temperatures. Numerical study was done using FLUENT 14.0.
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All Terrain Versatile Wheelchair
Gabby John ; Akhil Ashok; Ashish Thomas Varughese; Jins Sony; Jason Cherian Issac
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 366 - 373
The proposed project envisages designing and fabricating a wheel chair equipped with versatile features aiding the physically challenged person to have more mobility while moving through various surface. The major challenge faced by the existing designs of normal wheel chairs in the market is their inability to climb steps even with the help of a bystander. However the existing step climbing wheelchair are designed only for that purpose and not economically designed for movement through flat normal surfaces. The proposed design of the wheelchair alleviates aforesaid disadvantages and is able to climb steps, move more easily through flat surfaces and rough terrains and more importantly it is economical. The proposed wheel chair employs caterpillar track mechanism. The centre of gravity is controlled by hydraulic shocks. This type of traction belt is responsible for contact with two steps at a time, thus enabling the wheel chair to move up or down over the steps. The forward, reverse and sideways motion of the proposed wheelchair is controlled with the aid of an electric motor and steering is operated by a mechanical pedal. This innovation made the wheel chair highly versatile and flexible in application.
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Study of Vortex Induced Vibrations for Harvesting Energy
Gaurao Gohate ; Sameer Jadhav; Saurabh Bobde; Abhilash Khairkar
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 374 - 378
Today, India is stepping towards becoming a global super power. This implies that, it is leading the list of developing countries in terms of economic development. Hence its energy requirement is going to increase manifold in the coming decades. To meet its energy requirement, coal cannot be the primary source of energy. This is because coal is depleting very fast. It is estimated that within few decades coal will get exhausted. The next clean choice of energy is solar power, but due to its lower concentration per unit area, it is very costly. India is having fifth largest installed wind power capacity in the world. As the regions with high wind speed are limited, the installation of conventional windmill is limited. Windmills that would provide safe, quite, simple, affordable and work on lesser wind speeds are need of the hour. The Bladeless Windmill is such a concept which works on the phenomenon of vortex shedding to capture the energy produced. Generally, structures are designed to minimize vortex induced vibrations in order to minimize mechanical failures. But here, we try to increase the vibrations in order to convert vortex induced vibrations into electricity. The paper studies the scope and feasibility of the bladeless windmill.
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Automatic Jack with Inflator and Electric Wrench
JIBIN P JOHN ; DEGIN JOHN; JEFFIN JAMES; JIBIN P PHILIP; PHILIP JACOB PERAKATHU
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 379 - 384
When it comes to travelling by cars, mishaps and unwanted incidents such as tyre puncture, low air pressure in tyre are extremely common. A conventional carjacking system makes use of mechanical advantage to lift the cars. Despite the mechanical advantage jacking up a car is a very difficult task for many people especially women and elderly people. The objective of this project is develop a new carjacking system in order to make the operation easier, safer and more reliable in order to save individuals from unnecessary expenditure of energy and reduce health risks especially backache problems. In the context of this particular project, the newly developed scissor jack uses a 12 V DC motor as the prime mover which works using the car battery. The motor is connected to the lead screw of the jack through reduction gear, so as the motor starts, the pinion is rotates with a torque equal to the motor torque. Since the pinion is in mesh with the gear (double the number of teeths in pinion) in the lead screw, the driven gear starts rotating with a multiplied torque, thereby lifting the car. The developed system also has a provision for inflating the tyre, which is used when the air pressure in the tyre is lesser than ideal conditions. The system uses a reciprocating type compressor which works on the 12 V supply. The main advantage of this system is that we can use it whenever we requires.
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90 degree Steering Mechanism
Arjun V Pradeep ; Aswin Ninan C; Inzamamul Haq L; Jijomon Joseph; Harikrishnan S
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 385 - 390
A new absolute eco-friendly vehicle with independent, low emission transportation possible for people who utilize wheelchair could definitely be an improvement in this system. For this, an eco-friendly vehicle, like an electric car which can steer through 90 degrees, thus reducing the turning radius with low efforts has to be defined. Automotive of present time does not have the ability to steer through 90 degrees. Such vehicles can help disabled people effectively. A lot of researches have been done on this field so as to implement this methodology but it has not yet been implemented. The idea is to use electric motors on any two diagonal wheels and a counter phase system implementation. The mechanism works at low speed only. The steering mechanism uses rack and pinion in defined gear ratios with the help of some bevel gears. The rear wheels are mounted in such a way that the power is transmitted even when it is being steered through 90 degrees. The vehicle is designed in such a way that it has facilities for disabled people to enter into and out of the vehicle without any external help. Even for people who depends fully on wheel chairs can easily enter the vehicle through the inclined passage provided at the rear side. Advantages of this system is that it can work in limited space and it reduces the time and effort for steering through 90 degrees thus making the system more flexible. It can be used for other applications such as parking, farm vehicles, trucks, forklifts etc.
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Vishwakarma Yojana an Approach Towards Rurbanization of ITADRA Village
VIHOL TANMAYSINH P. ; CHAUHAN NAVDEEPSINH D.; PATEL YASH B; PATEL DHAVALKUMAR M.
Civil Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 391 - 396
The Government of Gujarat has launched Vishwakarma Yojana (scheme) for development of villages by identifying the requirements of villages. Under this scheme, the villages are surveyed and this project was identified and selected for implementation. Rurbanization is to bring peace of mind to the villagers by providing them the basic amenities required and still keeping the village’s oulintact. This project gives one new idea for Development of rural villages. Also gives procedure how they fulfill requirement of the villages. Now a day people are moving from rural to urban are due to lack of basic amenities. With the help of this Yojana we can bring awareness about the thing which are not available at rural areas. So this help to provide better solution for the available problems in rural area like drinking water, Drainage facility, road network, etc.
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Electronic Braking System
ASWIN PHILIP ; ADARSH S; JOHAN BENNY; FEBIN CHERIAN; Nisthul.G
Mechanical Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 397 - 407
Generally the brakes are either hydraulically or pneumatically actuated systems. A dc motor can be used in certain system for controlling the brake application. From the study of various system of braking, which uses microcontroller, a new idea of braking for small scale application directly involving the working of a relays and a dc motor was evolved. The present project work seeks to create a pattern and design of electronic braking system using a dc motor. The project is categorized to two parts. The first parts deals with the general study of various braking system and its components. The second part deals with the various designs in accordance with the requirements. The basic precondition for developing electronic braking system is avoiding the hydraulic and pneumatic controlling and by designing a controller able to control automotive brake systems. So in this improved design we are trying to minimise the effort required for braking. In this system we are using a dc motor to actuate the fluid pressure in the brake calliper for braking.
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SEEDAL: Secure, Energy-Efficient, Delay-Aware, And Lifetime-Balancing Routing Protocol for Heterogeneous Wireless Sensor Networks
Arya. R ; Dr. N. K. Sakthivel
Computer Science and Engineering
Year: 2016, Volume:2, Issue : 11
Pages: 408 - 414
The latest research on Open Vehicle Routing (OVR) problems, a dynamic territory in operational research depends upon some features and requirements which can be contrasted with requirements in Wireless Sensor Networks domain. According to this perception, the computational overheads in Open Vehicle Routing can be compared to Routing problems in Wireless Sensor Network. To show that this methodology is possible, one data collection protocol called EDAL, was developed. The conservation of credibility and protection of the data is not considered in the outline of the EDAL protocol. Keeping in mind the end goal to conquer the issue with respect to the secure data transmission in EDAL, another protocol called SEEDAL, which remains for Secure, Energy-Efficient, Delay-Aware, and Lifetime-Balancing Routing Protocol for Heterogeneous Wireless Sensor Networks (SEEDAL) which provides a secure routing mechanism considering the concept of secret key sharing by means of encryption and decryption during the data transmission and data reception It likewise considers expense of giving security and some of its major impact on energy effectiveness. The design of SEEDAL protocol is efficient in terms of packet delay, network lifetime, energy efficiency, energy consumption.
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Abstract
