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BOILER PARTS (Water wall and Drum)

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Boiler Parts : Water walls Almost all modern power boilers are equipped with water walls. In large boilers, water walls completely cover the interior surfaces of the furnace providing practically complete elimination of exposed refractory surface; Waterwalls serve as the only means of heating and evaporating the feed water supplied to the boiler from  economizers . Waterwalls usually consists of tangential vertical tubes and are connected at the top and bottom to headers. These tubes receive water from the boiler drum by means of downcomers connected between drum and Waterwalls lower header (Bottom Ring Header). In a boiler approximately 50% of the heat released by combustion of fuel in the furnace is  absorbed  by Waterwalls. Heat so absorbed by the Waterwalls is used in evaporation of water supplied to the boiler. The evaporated steam supplied to Boiler Drum again by mean of riser tubes from top header of water wall. W/W Top Header water wall of a thermal powe...
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Engineering Mechanics 2, work power, energy

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Work, Power and Energy : Work : Work is a product of applied force and displacement in the direction of force W = FxD where F is applied force and D is displacement in the direction of force Unit : F - N, D - m then W = Nm = Jule Displacement : Displacement is a vector quantity, it can be positive or negative. If a body starts its motion from a point and move in a zigzag path then the total length of the path is known as "Distance" and the shortest distance between the start and end point is known as "Displacement". Engineering Mechanics Power :  Rate of work done per unit time is known as Power. P = W/t = FxD/t  = Fx v ,  ( v is velocity ) Unit : Nm/sec = Jule/sec= Watt. Energy : Energy is the capacity of body to do work. Unit of Energy = Jule General types of energy :- Kinetic Energy  Potential Energy Nuclear Energy Chemical Energy Electrical Energy Solar Energy Kinetic Energy : The energy due to motion of a body is known as Kinetic Energy (KE) KE  = mv 2 /...
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Multi use of Google translate

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Google translate दोस्तो एक भाषा से दूसरी भाषा मे ट्रांसलेट करने के लिए बहुत से एप्प उपलब्ध हैं, जिनमे गूगल ट्रांसलेट के बारे में सभी जानते है। लेकिन बहुत से लोग इसका पूरा उपयोग नही जानते । जी है ये ऐसा ऍप्लिक्शन है जिसमे न केवल टाइप करके, बल्कि बोलकर और फ़ोटो क्लिक करके भी ट्रांसलेट किया जा सकता हैं। अधिक जानकारी जे लिए  वीडियो देखें Google translate ka behtareen upyog kaise kare
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