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Powerless Air Conditioning with Integrated Water Heating
Nishin Asharaf ; Nicku Abhraham ; Sajin Chacko; Shijo George; Tom Mathew
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 170 - 177
The planet is progressively marching towards a serious electric energy crisis, owing to an escalating desire of electric energy becoming greater than its supply. We have always accepted that the energy we make use of each day is not unrestricted, still we take it for granted. So it is better to utilize the available resources. Among these solar energy is the most abundant and cheap resource available. So here we use only solar energy for the cooling of buildings and also for water heating. In this project, we utilize only solar power for the cooling process and also for water heating. The cooling process proceeds as the temperature of atmosphere increases by sun rays. This can also be used as a room heater in winter condition by proper adjustment. The main highlight of our project is that only solar energy is utilized for the cooling and heating process. No other external power sources are used. Our product is eco-friendly and pollution less. This can also installed at remote areas where electricity is not available and in regions where atmospheric temperature is high e.g. Rajasthan. It is well suited for middle class family as it requires only initial investment and less maintenance cost. No separate water heater is required for domestic purpose.
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Design High Speed Conventional D Flip-Flop using 32NM CMOS Technology
Mr. PRATHAMESH G. DHOBLE ; Mrs. AVINASH D. KALE
Electronics & Communication Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 178 - 184
A Delay (D) flip-flop is an edge triggering device. A high speed, low power consumption, positive edge triggered conventional Delay (D) flip-flop can be designed for increasing the speed of counter in Phase locked loop, using 32nm CMOS technology. The conventional D flip-flop has higher operating frequencies but it features static power dissipation. The designed counter can be used in the divider chip of the phase locked loop. A divide counter is required in the feedback loop to increase the VCO frequency above the input reference frequency. The propose circuit will be faster than conventional circuit as it will be a fast reset operation. The circuit will be consuming less power as it prevents short circuit power consumption. The circuit operates at low voltage power supply.
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ELIMINATING harmonics of SINGLE phase five level cascaded inverter
TAILOR ANKIT KISHORBHAI
Electrical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 185 - 190
This paper present Cascaded Hybrid Multilevel Inverter (CHMLI) is an attractive topology for high voltage DC-AC conversion. This paper focuses on a single-phase five-level inverter with eliminating harmonics. The inverter consists of a two full bridge inverter. The inverter produces output voltage in five levels: 0, +0.5Vdc, +Vdc, -0.5Vdc and –Vdc.. This paper present sequential switching hybrid-modulation strategies for cascaded multilevel inverter and comparison of two hybrid pulse width modulation techniques. the main characteristics of these modulation are the reduction of switching losses with good harmonics performance, balance power loss dissipate among the device with in a cell .the feasibility of these hybrid modulation are verified matlab/simulink software and simulation result are presented.
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CFD ANALYSIS OF A 24 HOUR OPERATING SOLAR REFRIGERATION ABSORPTION TECHNOLOGY
ARUNKUMAR H ; ARUN GEORGE; BENSON P SUNNY; JESBIN ANTONY; LIJU MATHEW ALEXANDER
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 191 - 201
A computational fluid dynamics (CFD) model is used to investigate outlet temperatures in heat exchanger within generator by varying fluid velocities and also used to investigate outlet temperature in evaporator and heat flux rate at walls of evaporator. The solar refrigeration absorption system taken for analysis is a continuously operating refrigerant storage system. R-717(Ammonia) is used as refrigerant. Aqua-ammonia vapor absorption refrigeration systems, which operate such that both, the generation of aqua ammonia vapors and the production of cold utilizing the generated aqua-ammonia vapors, take place at the same time are known as continuous-based operation systems. Model is completed using Solid works. Analysis is carried out in ANSYS 14. FLUENT is the software used to simulate fluid flow problems. It is generally used for computational Fluid Dynamics problems. It uses the finite-volume method to solve the governing equation for a fluid. It provides a wide field to solve problems. Numerical computations have been carried out to find coefficient of performance (COP). Variation of temperature at outlet of heat exchanger and evaporator are studied. Difference in maximum and minimum temperature at outlet of heat exchanger and evaporator at different fluid velocities are noted. The obtained profiles indicate variation in temperature of fluid. Graphs showing variation of COP with varying evaporator and generator temperatures are plotted. Air taken from outlet of evaporator via blower is used for refrigeration.
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DEsGn OF 3D BLADES FOR SMALL SCALE WELLS TURBINE
SRIRAM.S.KUMAR ; SHYJO JOHNSON; TOM.B.THACHUPARAMBIL; VIVEK JOSEPH JOHN; G.ANIl KUMAR
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 202 - 207
Wells turbine is a self-rectifying air turbine which is widely used in oscillating water column energy converter. The Wells turbine will always rotate in the same direction irrespective of the direction of the oscillating airflow. Furthermore the Wells turbine has a simple configuration and structure. This is why the Wells turbine is very commonly used for conversion of wave energy. At present 2-dimensional blades are being used for the conversion of wave energy. We are proposing 3-dimensional blades that can improve the steady characteristics of the current wells turbine. The effect of 3-dimensional blade on the turbine characteristics has been analyzed based on different inlet velocities and steady characteristics were found out. Further, the aim of the use of 3-dimentional blade for Wells turbine is to prevent flow separation on the suction surface near tip, which is a major drawback in the case of existing one. The chord length is constant with radius and the blade thickness increases gradually from hub to tip. The blade profiles are NACA0015 at hub, NACA0020 at mean radius and NACA0025 at tip. The performance of wells turbine with 3-dimensional blades has been compared with those of original Wells turbine, i.e., the turbine with 2-dimensional blades. As a result, it has been concluded that both the efficiency and turbine characteristics can be improved by the use of 3-dimensional blade.
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multipurpose exersize cycle
khan mohd aqeel ; rizvi sameer abbas; sayed arshad ; shaikh irfan; Mr.prof. Ziya
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 208 - 210
Exercise cycle is the main mode of exercise in many urban areas. Power generated by pedaling can be used in many applications i.e. power generation ,run a washing machine, run mixer grinder etc. basically this project is extremely useful in all over the world . Riding a cycle helps in maintaining a good physic and along with it gives us its power to reduce our efforts and save our time also. Basically we don’t put any extra effort and we utilize our exercise energy only. In India, these types of energy are really needed. Because we already suffering from shortage of electricity and energy resources. Problem statement: As we know, renewable energy sources can be replenished in a short period of time. These abundant and sustainable energy sources can be used to curb our need for fossil fuels, thus reducing impact to humans, other species and their habitats. India needs more and more energy every year, whether it is fuel to create electricity or fuel for our vehicles. There is constant hated political debate regarding the best decision for our nation's energy security. While politicians debate over this issue, they lose sight of alternatives to oil, like wind, solar, geothermal and hydro power. India will not be energy independent if all resources are used to exploit every last drop of oil on Indian soil. By taking all this things in consideration we select this project and this is the only method to reduce use of electricity and produce it with our salves to run a fan or turn on the light when power is cut off.
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E-votING SYSTEM FOR MODERN INDIVIDUAL
MADHUMITA HARI DESHPANDE ; DEEPALI ZAMBARE; PRAJAKTA MANDLE; KOMAL HANKARE; KANCHAN SHELKE
Computer Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 211 - 216
The present voting system has many issues. The most prominent among them is the problem that the voter is not present in his/her country or local area at the time of elections, therefore, he/she is unable to cast his/her vote. Our approach aims at solving this problem. We have endeavoured to introduce an E-Voting System, which uses Android technology. The system includes an android application that will permit the voter to cast his/her vote from any remote location using mobile phone/ cell phone or any device supporting Android OS(2.2 and higher versions). This application uses two-factor authentication mechanism in order to ensure authenticity of voter’s identity. The two-factor authentication mechanism comprises of Face Recognition using Template Matching technique and OTP. Overall an effort has been made to deliver an E-voting System that provides better performance, security, accuracy and reliability to the entire Election process.
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A review on techniques for modeling and optimizing process parameters for Electro Discharge Machining
NIRAV G. PATEL ; NARESH D. CHAUHAN; PARTHIV T. TRIVEDI
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 217 - 221
Electro Discharge Machining Processes are used only when no other traditional machining process, like drilling, milling, grinding and other traditional machining operation can meet the necessary requirements efficiently and economically. Electro discharge machining is a non-traditional machining process , in general adopted to difficult to machine material, hard material components or machining geometrically complex, that are precise and difficult-to-machine such as ceramics, composites, heat treated tool steels, super alloys etc. Electro discharge machining is a thermo-electric non-traditional machining process in which material removal takes place through the process of controlled spark generation between a pair of electrodes which are submerged in a dielectric medium. The purpose of this paper is overview of EDM process, modelling of process parameters, and also discuss about controlling the electrical process parameter, and empirical relation between process parameters and optimization of process parameters in EDM process.
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Pseudo Noise Sequence Generation Using Elliptic Curve For CDMA and Security Application
NIVEDITA SINGH ; MANOJ KUMAR; PAYAL DWIVEDI; BARKHA SHRIVASTAVA
Electronics & Communication Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 222 - 227
Spread spectrum communication is a new theory and modulation technique and different from the conventional communication system. A good correlation property and large linear period of Pseudo-random sequence is the basis of spread spectrum communication systems intern CDMA (code division multiple access communication systems). In this paper PN (pseudo noise) sequence/ code which is referred as the high rate digital code is generated on MATLAB by use of cyclic elliptic curve. This paper presents an investigation on use of Genetic Algorithm (GA) for the purpose of encryption of audio and video input. A pseudo random sequences, is use in various applications like CDMA, image protection, speech security, watermark etc. The most commonly used sequences in direct sequence spread spectrum systems are maximal length codes, gold codes and barker codes. The sequence offers a variety of correlation properties like auto and cross correlation, sensitivity, key space etc. Based on a measure described in this, the correlation properties of sets of these sequences are compared to well-known sequence sets and after comparing it we can apply it in various applications.
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capillary water provision system
Kiran Thomas ; Joju Thomas K; Dheeraj M; Christin Thomas ; Philip Jacob Perakathu
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 228 - 232
Water provision system using capillary action is a restoration propagation operation. The capillary action occurs due to the combined effect of three phenomena’s namely cohesion, adhesion, and surface tension. This is a low cost approach to supply an efficient and continuous source of moisture to plants. A variety of materials can be used to construct this system. In this study, a system has been designed and water is allowed to reach the root of plants through capillary action. For the betterment of water transfer, a porous material is embedded into the system. Using this system water can be provided to a certain height without the aid of mechanical devices like motor and pump. This method can be used to provide water to small plants and also to large plants in their initial growing stages. This largely helps in reducing wastage of water and helps in efficient use of water especially in water scarce regions. This system can be modified for more applications in the future.
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Abstract
