Textiles in defense Dr. Muhammad Mushtaq Mangat www.mushtaqmangat.org Textiles in defence Defence forces on land‚ sea‚ or air throughout the world are heavily reliant on technical textiles of all types – whether woven‚ knitted‚ nonwoven‚ coated‚ laminated‚ or other composite forms Technical textiles offer invaluable properties for military land forces in particular‚ who are required to move‚ live‚ survive and fight in hostile environments. They have to carry or wear all the necessities
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heat transfer equipment. It therefor comes as no surprise that finding a way to make HTF’s more efficient is desirable in the scientific community. Research is being done to attempt to rectify this issue by adding materials with a high thermal conductivity (metal’s and metal oxides) to HTF’s in accordance with Maxwell’s heat transfer equations [1]. Until recently this problem was addressed by using micro scale solid particles with millimeter sizes which were blended into the HTF’s. Unfortunately
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controlling the transfer of heat in a specified food. These properties are usually classified (Perry and Green‚ 1973) into thermodynamical properties‚ viz‚ specific volume‚ specific heat‚ and enthalpy; and heat transport properties‚ namely‚ thermal conductivity and thermal diffusivity. When considering the heating or cooling of foods‚ some other physical properties must be considered because of their intrinsic relationship with the ‘‘pure’’ thermal properties mentioned‚ such as density and viscosity
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temperature and to the area‚ at right angles to that gradient‚ through which the heat is flowing. If a plane wall of thickness (x) and area (A) and thermal conductivity (k) supports a temperature difference (T) then the heat transfer rate by conduction is given by the equation: Assuming a constant thermal conductivity throughout the material and a linear temperature distribution‚ this is: 4.0
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the field is given by the direction of that force. Electric fields contain electrical energy with energy density proportional to the square of the field amplitude. The electric field is to charge as gravitational acceleration is to mass and force density is to volume. 1. Suppose that two point charges‚ each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter. Determine the magnitude of the electrical force of repulsion between them. Given: Q1 = 1.00 C Q2 = 1.00 C
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affordable and reliable‚ have flexibility of control‚ and offer significant electrical energy savings through greatly reduced electric bills. They are used in a wide variety of applications for various reasons. For example‚ they are the most effective energy savers in pump and fan applications; they enhance process operations‚ particularly where flow control is involved. VFDs provide soft-start capabilities‚ which decrease electrical stresses and line voltage sags associated with full voltage motor start-ups
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First Edition‚ last update January 18‚ 2010 2 Lessons In Electric Circuits‚ Volume VI – Experiments By Tony R. Kuphaldt First Edition‚ last update January 18‚ 2010 i c 2002-2011‚ Tony R. Kuphaldt This book is published under the terms and conditions of the Design Science License. These terms and conditions allow for free copying‚ distribution‚ and/or modification of this document by the general public. The full Design Science License text is included in the last chapter. As an open
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Elizabeth. The project will see the erection of four wind “The project will see the erection of four wind turbines‚ utilizing the most modern engineering design...” turbines‚ utilizing the most modern engineering design approved for electrical grid application. The project will cost JPS over J$800 Million‚ and is scheduled for completion by the 4th quarter of 2010. It will result in the addition of 3 megawatts of electricity to the national grid. In preparation for the new
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Introduction to AC Machines Dr. Suad Ibrahim Shahl ELECTRICAL MACHINES II Lecturer: Dr. Suad Ibrahim Shahl Syllabus I. II. III. IV. V. VI. VII. Introduction to AC Machine Synchronous Generators Synchronous Motors Three-Phase Induction Machines Three-Phase Induction Motors Induction Generators Induction Regulators Recommended Textbook : 1) M.G.Say Alternating Current Machines Pitman Pub. 2) A.S. Langsdorf Theory of AC Machinery McGRAW-HILL Pub. 1 Introduction to AC Machines
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------------------------------------------------- ------------------------------------------------- ------------------------------------------------- KEYWORDS optimization‚ electrical discharge machining‚ soft computing‚ artificial neural network‚ fuzzy logic‚ evolutionary algorithms‚ -------------------------------------------------
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