Boiler Basics Design and operation A boiler is an enclosed vessel that provides a means for combustion heat to be transferred into water until it becomes heated water or steam. The hot water or steam under pressure is then usable for transferring the heat for the steam requirements of process industries or for power generation. Combustion boilers are designed to use the chemical energy in fuel to raise the energy content of water so that it can be used for heating and power applications. Many fossil
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Horizontal boiler – If the axis of the boiler is horizontal. Parts of horizontal boiler can be inspected and repaired easily but it occupies more space. The vertical boiler occupies less floor area. Fire Tube and Water Tube Fire Tube – the hot gasses are inside the tubes and water surrounds the tubes. Eg: Cochran‚
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boilers may be classified according to following criteria: 1. According to relative position of water and hot gases. (a) Water tube boiler: A boiler in which the water flows through the tubes which are surrounded by hot combustion gases i.e. Babcock and Wilcox‚ Stirling‚ Benson boilers etc. (b) Fire tube boiler: The hot combustion gases pass through the boiler tubes‚ which are surrounded by water i.e. Lancashire‚ Cochran‚ Locomotive boilers etc. 2. According to water circulation arrangement
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The monitors come in many different forms. Cathode Ray Tube (CRT) and Liquid Crystal Display (LCD) are the most popular displays at this time. Plasma Display Panel (PDP)‚ Organic Light-Emitting Diode (OLED)‚ and Surface-conduction Electron-emitter Display (SED) are other technologies that exist for producing a VDU. Cathode Ray Tubes refers to the tube that is inside of the monitor. An electron gun‚ in the tube‚ shoots electrons down the tube and onto a charged screen. The screen is coated with a
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CAMIGUIN POLYTECHNIC STATE COLLEGE – Institute of Engineering and Computer Studies ACKNOWLEDGMENT The trainee extends his warm appreciation and gratitude to those who helped in the completion of his training. To the trainee’s parents and relatives for their endless support both moral and financial. To the OJT – in – charge‚ Engr. GIL B. SALAS for his teachings and reminders to be a good and responsible trainee and enrolling the trainee on their OJT. To the engineering instructors‚ for molding
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Boilers‚ Steam Boilers‚ Fire Tube Boilers‚ Water Tube Boilers‚ Wood Fired Boilers‚ Package Boilers‚ D type boilers in Australia and other countries and areas and across the international market. Fire Tube Boilers Our fire tube boilers are manufactured to last‚ they are available in a variety of different designs. Fire tube boilers are available in single pass‚ 2 pass and 3 pass patterns. Recent technology upgrades has allowed us to design more compact and efficient fire tube boiler designs. To match
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operate safely and productively is highly dependent upon the integrity of the boilers. In this business case‚ we enquired the opportunity of multiple-year preventative maintenance plan for utility boilers. The scope includes various sizes of fire-tube and water-tube boilers firing natural gas at a rate of 400‚000 BTUH or higher. The target customer base includes but is not limited to hospitals‚ universities‚ large buildings with central heating and cooling systems. As a part of the project we presented
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contains a drain‚ which removes contaminants and sediment from the water vessel‚ and a chimney‚ which allows heat to escape once it has passed through the water vessel. Boiler Configurations There are two main types of boilers: fire tubes and water tubes. In a fire tube boiler‚ heat is directed through metal rods that pass through the middle of the water vessel. The rods are arranged in banks so that the heat can pass through the vessel many times before escaping through the chimney.
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applications • • • • • Direction of axis of shell @ drum – vertical / horizontal The way of erected – stationary ‚ portable‚ marine Location of the furnace – internally @ externally fired Position of water & hot gases – water tube @ fire tube. As special boiler – natural circulation‚ force circulation and one through There are 3 range of boiler depending on usage LOW PRESSURE STEAM BOILER MEDIUM PRESSURE STEAM BOILER raging up to 15 psi HIGH PRESSURE STEAM BOILER
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TELEVISION BOON OR BANE Television is a striking creation of science in the world of technology. Fifty years ago‚ almost no one had television set. Now there are more household with TV than ever. Everything has boons and banes so television also has many boons and banes. Television is a resource that can be used to educate and entertain people of different ages. Without any doubt‚ watching TV is a good way of getting informed. Watching news gives a good insight into what really is happening in
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