1. A thin wall double tube heat exchanger should be used to cool oil (Cp = 2200 J / Kg * K) from 149 ° C to 40 ° C, with a mass flow of 2.3 Kg / s, using water ( Cp = 4180 J / Kg * K) that enters at 20 ° C, a ratio of 1.5 Kg / s. The diameter of the tube is 12cm and its length is 61 meters. Determine the total heat transfer coefficient of this exchanger applying a) the LMTD method and b) the NTU method

1. A thin wall double tube heat exchanger should be used to cool oil (Cp = 2200 J / Kg * K) from 149 ° C to 40 ° C, with a mass flow of 2.3 Kg / s, using water ( Cp = 4180 J / Kg * K) that enters at 20 ° C, a ratio of 1.5 Kg / s. The diameter of the tube is 12cm and its length is 61 meters. Determine the total heat transfer coefficient of this exchanger applying a) the LMTD method and b) the NTU method

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter14: Ocean Thermal Energy Conversion And Ocean Salinity Gradient Energy

Section: Chapter Questions

Problem 1P

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