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In a double-pipe counter-flow heat exchanger 10,000kg/h of an oil having a specific heat 2095J/kg.K is cooled from 80C to 50C by 8000kg/h of cooling

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In a double-pipe counter-flow heat exchanger 10,000kg/h of an oil having a specific heat 2095J/kg.K is cooled from 80C to 50C by 8000kg/h of cooling water at 25C. Assume overall heat transfer coefficient of 300W/m2K and specific heat of water as 4180J/kgK : a) Determine LMTD b) Determine the heat exchanger area

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