A long counter-flow heat exchanger cools water from 40°C to 10°C by passing the water via the inner cube through an enclosure of cold fluid. The water is flowing through a 3-cm diameter tube at a rate of 0.27 kg/s. The cold fluid enters the enclosure at -10°C and has a convection coefficient of 1200 W/m².K. The mass flow rate of the cold fluid and its specific heat are 1.2 kg/s and 1340 J/kg-K, respectively. (a) Assuming the flow is fully developed, find out the convection coefficient of the water flow. (b) What is the length of the heat exchanger? 1554 W/m²K 21.9m Water Cold Fluid

A long counter-flow heat exchanger cools water from 40°C to 10°C by passing the water via the inner cube through an enclosure of cold fluid. The water is flowing through a 3-cm diameter tube at a rate of 0.27 kg/s. The cold fluid enters the enclosure at -10°C and has a convection coefficient of 1200 W/m².K. The mass flow rate of the cold fluid and its specific heat are 1.2 kg/s and 1340 J/kg-K, respectively. (a) Assuming the flow is fully developed, find out the convection coefficient of the water flow. (b) What is the length of the heat exchanger? 1554 W/m²K 21.9m Water Cold Fluid

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A long counter-flow heat exchanger cools water from 40°C to 10°C by passing the water via the inner
tube through an enclosure of cold fluid. The water is flowing through a 3-cm diameter tube at a rate of
0.27 kg/s. The cold fluid enters the enclosure at −10°C and has a convection coefficient of 1200 W/m².K.
The mass flow rate of the cold fluid and its specific heat are 1.2 kg/s and 1340 J/kg-K, respectively.
(a) Assuming the flow is fully developed, find out the convection coefficient of the water flow.
(b) What is the length of the heat exchanger?
1554 W/m²K
2
21.9m
Water
Cold Fluid

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