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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.
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Q. can you explain Shell molds? These molds are prepared by pouring a mixture of sand and thermosetting resin over the heated surface of a metallic pattern, which results into
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Angle of twist is zero on the shaft: A shaft 10 m long and 100 mm diameter during its length is fixed at the ends and is subjected to two opposite torques of 8 kN-m and 10 kN-
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