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A counter flow heat exchanger is used to cool 2000kg/hr of oil(Cp= 2.5 KJ/Kg K) from 105 oC to 30 oC by the use of water entering at 15 oC. If the overall heat transfer coefficient is approximate to be 1.5 Kw/m2K, make determination for water flow rate, the surface area needed and the effectiveness of heat exchanger. Presume that the exit temperature of the water is not to exceed 80 o C. Use NTU-effectiveness approach.
Calculate the maximum allowable internal pressure to which a cylinder with an internal diameter of 200 mm and external diameter of 300 mm may be subjected if the cylinder is to hav
T emperatur e Measurement by Using Thermometers: To measure temperature at temperature scale should be devised assigning arbitrary numbers to a known specific level of hotne
Engine Lubrication System: This system facilitates the lubrication of all the engine components, gears and other associated parts.
classify maintaince engineering
A solid shaft of diameter d is taken in power transmission. Because of modification of existing transmission system, it is needed to replace the solid shaft by a hollow shaft of th
Proof that energy is a property of system
laws of belts ?
In the drawing, the weight of the block on the table is 380 N and that of the hanging block is 215 N. Ignore all frictional effects, and assuming the pulley to be massless.
Ladder friction: .: A ladder is an arrangement which is used for climbing on the walls. It consists of two long uprights of wood or iron and connected by many cross bars. Th
Q. Show Experimental Verification of time Dilation ? Time dilation is a real effect, it can be verified by making this experiment. (Are created at high attitudes in the earth a
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