Wednesday, June 21, 2017

ThermoAcoustic Refrigeration PPT Seminar Report

Thermoacoustic Refrigeration PPT Seminar Report : Introduction

Thermoacoustic have been known for over years but the use of this phenomenon to develop engines and pumps is fairly recent. Thermoacoustic refrigeration is one such phenomenon that uses high intensity sound waves in a pressurized gas tube to pump heat from one place to other to produce refrigeration effect. In this type of refrigeration all sorts of conventional refrigerants are eliminated and sound waves take their place. All we need is a loud speaker and an acoustically insulated tube. Also this system completely eliminates the need for lubricants and results in 40% less energy consumption. Thermoacoustic heat engines have the advantage of operating with inert gases and with little or no moving parts, making them highly efficient ideal candidate for environmentally-safe refrigeration with almost zero maintenance cost. Now we will look into a thermoacoustic refrigerator, its principle and functions.
ThermoAcoustic Refrigeration PPT Full Seminar Report

Thermoacoustic Refrigeration PPT Seminar Report: Basic Working Principle

In a nutshell, a thermoacoustic engine converts heat from a high-temperature source into acoustic power while rejecting waste heat to a low temperature sink. A thermoacoustic refrigerator does the opposite, using acoustic power to pump heat from a cool source to a hot sink. These devices perform best when they employ noble gases as their thermodynamic working fluids. Unlike the chemicals used in refrigeration over the years, such gases are both nontoxic and environmentally benign. Another appealing feature of thermoacoustics is that one can easily flange an engine onto a refrigerator, creating a heat powered cooler with no moving parts at all.
The principle can be imagined as a loud speaker creating high amplitude sound waves that can compress refrigerant allowing heat absorption. The researches have exploited the fact that sound waves travel by compressing and expanding the gas they are generated in.

Thermoacoustic Refrigeration PPT Seminar Report: Conclusion

Thermoacoustic engines and refrigerators were already being considered a few years ago for specialized applications, where their simplicity, lack of lubrication and sliding seals, and their use of environmentally harmless working fluids were adequate compensation for their lower efficiencies. This latest breakthrough, coupled with other developments in the design of high power, single frequency loud speakers and reciprocating electric generators suggests that thermo acoustics may soon emerge as an environmentally attractive way to power hybrid electric vehicles, capture solar energy, refrigerate food, air condition buildings, liquefy industrial gases and serve in other capacities that are yet to be imagined.

Saturday, June 17, 2017

Axial-Field Electrical Machines PPT-Seminar Report

Here we have uploaded the Axial-Field Electrical Machines Seminar Report.We have discussed the configuration,Advantages and the various application of Axial-Field Electrical Machines in the seminar report. If you want to download the Axial-Field Electrical Machines Seminar Report kindly find the link at the bottom of the article.We have also uploaded the Axial-Field Electrical Machines PPT with various diagram.You can download Axial-Field Electrical Machines PPT by clicking the link below.
Axial-Field Electrical Machines were soon replaced by radial-field machines (Chan). These radial-field machines have been and are still used to a large extent. One example of a popular axial-field machine is the printed circuit servomotor. As mentioned above, one drawback of the axial-field design is the strong magnetic force between its stator and rotor. This problem may be alleviated by using a sandwich configuration with a stator placed between two rotors or a rotor sandwiched between two stators.
Axial-Field Electrical Machines PPT-Seminar Report

A study of axial-field machines reveals that high electrical power to weight ratios have been achieved as shown by the works. There is reason to believe that axial-field machines will be used in the future in a large number of applications where their special features offer distinct advantages. Some potential applications of the axial-field machines include car heater blower, radiator cooling fan, auxiliary power unit, wind-power generator, electric vehicle, high speed generator driven by a gas turbine, adjustable-speed pump drive, lawnmower motor, and others.
Axial-field machines offer an alternative to the conventional radial-field machines. Their main advantages over the conventional machines are:
• They can be designed (using permanent magnets) to possess a higher power-to-weight ratio.
• They have a larger diameter-to-length ratio.
• They have a planar and adjustable air gap.
• Their magnetic circuit topology can be easily varied so that many different types of axial field machines may be designed.
Axial-field electromagnetic differential induction motors are a promising solution for electrical cars because they can behave in the same way as an electro-magnetic differential supplied by a single set of inverters. The machines can have both higher efficiency and power density compared with two individual motors. Disc-type electrical machines with permanent-magnet excitation appear to be the best design in terms of compactness, suitability in shape, robustness, and superior electrical characteristics. Because the axial-field machines can be designed to possess high power to weight ratio, they are more suitable for use in aircrafts. Their relatively flat shape makes them also suitable for ceiling-fan motors, radiator cooling fans, etc…The possibility of using an ironless rotor in the axial-field machine makes it appropriate for applications with fast response and low inertia. Moreover, the prospect of separating the stator and the rotor makes the axial-field machine design suitable for sealed and screened machines, such as domestic pump motors and wheel-directly-coupled motors for electric vehicles. Finally, reductions in the cost of high-field permanent magnets are expected to open-up several applications for the axial-field machines.



Friday, June 16, 2017

“The Ghost” Revolutionary high speed stealth attack boat for the US military and Navy

The GHOST is a super-stealth warship that is invisible for the hostile radars. The craft was built by Juliet Marine Systems. Gregory Sancoff, the CEO of Juliet Marine Systems Inc. spent a decade designing and building this thing. The 60-foot long GHOST is shown bristling with weapons in slickly produced Juliet videos while its stealthy silhouette slices effortlessly and ominously through the water. It surpasses 50 knots (57 mph) by surrounding each ski with a bubble of air that helps it cut through water much easier than regular boats. It's a concept called super-cavitation. Ghost is powered by two jet engines, and uses a gyro-stabilized dual-pontoon supercavitating hull to run at top speed through 10-ft seas.
This fast attack stealth boat will make a difference. GHOST is a super-cavitating surface craft which is able to achieve 900 times less hull friction compared to a conventional watercraft and is developed by US Citizens for the US Navy at no cost to the US government for providing superior protection to US service personnel. GHOST is designed for fleet protection for navies with few blue-water needs but require a small and affordable craft in large numbers for near-shore maritime border patrol and defense missions; it is being offered to international customers including Bahrain, Qatar, Israel, Saudi Arabia, Japan, Taiwan, South Korea, and Singapore. While the GHOST is a surface vessel, the hydrodynamics of the twin submerged buoyant tubular foils are also a test bed for Juliet Marine's next planned prototype, a long duration UUV. The GHOST is a revolutionary proprietary technology vessel platform that will assure force protection through stealth fighter/attack capabilities along with integrated situation awareness.


Wednesday, June 14, 2017

Atmospheric Vortex Engine (AVE) PPT and Seminar Report


Atmospheric Vortex Engine (AVE) PPT and Seminar Report

Atmospheric Vortex Engine (AVE) Seminar Report Abstract

The demand for power has been increased nowadays in many folds and the need for a better, reliable and cleaner source of energy has become essential. Ultimately our aim is to fulfill the requirements of power demand. By research it is found that atmospheric vortex engine (AVE), the twin of solar chimney, seems to be a promising source and has many advantages than the latter. Through this research it is possible generating power from the residual heat source from the industries/thermal power plants. The atmospheric vortex engine(AVE) model is designed using computerized modeling and analyzed it using computational fluid dynamics. By varying the parameters, that influence the performance of atmospheric vortex engine (AVE), it is studied to obtain an optimum design and operating conditions. Also the atmospheric vortex engine (AVE) scaled model is fabricated and passed the flow to study about the vortex practically. It is found that it has enough strength to rotate a small turbine placed inside it. Also the smoke has been passed and small particles to visualize the flow. 

Atmospheric Vortex Engine (AVE): Introduction

An atmospheric vortex engine (AVE) is a device for producing mechanical energy by means of a controlled tornado-like vortex. The Vortex is produced by admitting warm or humid air tangentially into a circular arena. Tangential entries cause the warm moist air to spin as it rises forming an anchored convective vortex. The work of convection is captured with turbines located at ground level around the periphery of the arena. The heat source can be solar energy, warm water or waste heat. The process could become a major source of clean energy and could provide other benefits such as precipitation and cooling. 
Here we have uploaded an atmospheric vortex engine(AVE) PPT based on the refernces from http://vortexengine.ca . All the images used in atmospheric vortex engine(AVE) ppt are taken from the website and for educational purpose only. Atmospheric vortex engine(AVE) PPT covers the brief idea about the atmospheric vortex engine(AVE). For detail information kindly visit the website.Here we have also provided some documents which will help you to make atmospheric vortex engine(AVE) seminar report. You can use these documents for your seminar report for atmospheric vortex engine(AVE). The contents of atmospheric vortex engine(AVE) PPT and atmospheric vortex engine(AVE) seminar report may be subjected to copyright to the publishers.

Click Below Links to Download Atmospheric Vortex Engine (AVE) Seminar Report


Preview of  Atmospheric Vortex Engine (AVE) PPT

Semantic Web PPT and Seminar Report

Semantic Web PPT and Seminar Report

Semantic = Meaning
(the opposite of syntax/”syntactic”, which is the actual words used) 
semantic web ppt seminar report

The term was coined by Tim Berners-Lee for a web of data that can be processed by machines. The development of Semantic Web is well underway with a goal that it would be possible for machines to understand the information on the web rather than simply display. The major obstacle to this goal is the fact that most information on the web is designed solely for human consumption. This information should be structured in a way that machines can understand and process that information.
The concept of machine-understandable documents does not imply “Artificial Intelligence”. It only indicates a machine’s ability to solve well-defined problems by performing well-defined operations on well-defined data.The key technological threads that are currently employed in the development of Semantic Web are: eXtensible Markup Language (XML), Resource Description Framework (RDF), DAML (DARPA Agent Markup Language). 
Most of the web’s content today is designed for humans to read , and not for computer programs to process meaningfully.
Computers can
      - parse the web pages.
      - perform routine processing (here a header, there a link, etc.)
In general, they have no reliable way to understand and process the semantics.
The Semantic Web will bring structure to the meaningful content of the web of web pages,creating an environment where software agents roaming from page to page carry out sophisticated tasks for users.The Semantic Web is not a separate web.

Here we have given the best links for Semantic Web PPT. If you want to download the Semantic Web PPT Report then simply click the links given below. Semantic Web PPT is a nice topic for computer science engineering and IT students to present on a seminar. We have also provide you the links of W3C,where you can get more detail information which will help you to create Semantic Web PPT and Semantic Web seminar report.