100 kgs/min of water flows inside a copper tube (5 cm interior diameter) to be heated to a temperature of 60°C. Initial temperature of the water is 20°C. The outer surface of the tube will be kept at 100°C (Constant temperature in the surface). Find the length of the tube needed to increase the water temperature from 20°C to 60°C. The properties of water at 40°C are >= 994.59 Kg/m^3, Cp= 4178.4 J/Kg, >=0.658 x10^-6 m^2/s, k=0.628W/m K and Pr=4.34.. Hint 1: Consider the thermal resistance of the copper negligible. Hint 2: Check if the flow is laminar or turbulent.

100 kgs/min of water flows inside a copper tube (5 cm interior diameter) to be heated to a temperature of 60°C. Initial temperature of the water is 20°C. The outer surface of the tube will be kept at 100°C (Constant temperature in the surface). Find the length of the tube needed to increase the water temperature from 20°C to 60°C. The properties of water at 40°C are >= 994.59 Kg/m^3, Cp= 4178.4 J/Kg, >=0.658 x10^-6 m^2/s, k=0.628W/m K and Pr=4.34.. Hint 1: Consider the thermal resistance of the copper negligible. Hint 2: Check if the flow is laminar or turbulent.

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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