guides and propels vehicles through the harnessing of electromagnetic force. • The term "maglev" refers not only to the vehicles but also to the railway system. • Maglev train uses magnetic levitation from a very large number of magnets for lif and propulsion. • Has the potential to be faster‚ quieter and smoother than wheeled mass transit systems Introduction • Power needed for levitation is usually not a large percentage of the overall consumption • In the present moment there are several countries
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A driveway is a type of private road for local access to one or a small group of structures‚ and is owned and maintained by an individual or group (hotel). There are various methods to clean a driveway but the most important secret to have a nice looking driveway for many years is to periodically clean and seal it. Allowing the stains or cracks to stay on the surface for long periods of time will cause permanent damage to your driveways. The most common equipment of cleaning driveway: 1
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Rapid prototyping 3D printers 3D printing is a form of additive manufacturing technology where a three dimensional object is created by laying down successive layers of material. 3D printers are generally faster‚ more affordable and easier to use than other additive manufacturing technologies. 3D printers offer product developers the ability to print parts and assemblies made of several materials with different mechanical and physical properties in a single build process. Advanced 3D printing
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Ejectors Give Any Suction Pressure Recent tests on multistage ejector systems will simplify your task of designing vacuum-producing equipment for any pressure. F. DUNCAN BERKELEY GRAHAM MANUFACTURING CO.‚ INC.‚ BATAVIA‚ N.Y. B ecause of overlapping performance‚ it’s often a lengthy problem to arrive at the most economical design of an ejector. In practically every new application of high vacuum‚ we find it necessary to investigate thoroughly the many available means of producing vacuum
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around 90% less pollutants than regular cars. With cars with this system‚ a hybrid car can cross longer distances than normal ones with less use of gasoline. They can get up to 55-60 mpg in city driving‚ while a typical SUV might travel just 15-20 mpg. Also there are 2 types of cars: the first type is the series‚ and the second type is called the parallels First draft: Hybrid electric vehicle A hybrid electric vehicle (HEV) is a vehicle which combines a conventional propulsion system with
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(HEV) are the special types of vehicles that make use of two things together‚ i.e. conventional internal combustion engine (ICE) and an electric propulsion system‚ which together help in achieving fuel efficiency as compared to any other vehicle. The degree of efficiency and improvement provided by the HEVs depend on the degree and the type of propulsion systems they make use of. The engineers have succeeded in adding several additional features such as special breaking etc. for making sure that these
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Fundamentals of Thermal-Fluid Sciences Yunus A. Çengel‚ Robert H. Turner‚ John M. Cimbala McGraw-Hill Week 6-7 (Chapter 8) ENTROPY KHAIRUL FADZLI BIN SAMAT Faculty of Manufacturing Engineering Universiti Teknikal Malaysia Melaka Copyright © The McGraw-Hill Companies‚ Inc. Permission required for reproduction or display. WHAT IS ENTROPY? Boltzmann relation A pure crystalline substance at absolute zero temperature is in perfect order‚ and its entropy is zero (the third law of thermodynamics)
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CRYOCAR ABSTRACT Cryogens are effective thermal storage media which‚ when used for automotive purposes‚ offer significant advantages over current and proposed electrochemical battery technologies‚ both in performance and economy. An automotive propulsion concept is presented which utilizes liquid nitrogen as the working fluid for an open Rankine cycle. The principle of operation is like that of a steam engine‚ except there is no combustion involved. Liquid nitrogen is pressurized and then vaporized
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for the motive steam pressure at the nozzle exit as a function of the evaporator and condenser pressures and the area ratios as a function of the entrainment ratio and the stream pressures. This allows for full design of the ejector‚ where defining the ejector load and the pressures of the motive steam‚ evaporator and condenser gives the entrainment ratio‚ the motive steam pressure at the nozzle outlet and the cross section areas of the diffuser and the nozzle. The developed correlations are based
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to utilize the force that can be produced by a jet of fluid on a surface diverting the flow. For example‚ the pelton wheel has been used to make flour. Firemen make use of the kinetic energy stored in a jet to deliver water above the level in the nozzle to extinguish fires in tall buildings. Fluid jets are also used in industry for cutting metals and debarring. This goes to show the importance of applications of the fluid jet in the technological aspects of various fields in our society.
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