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Suppose an engineer suggests that air instead of water could flow through the tube in Problem 6.24 and that the velocity of the air could be increased until the heat transfer coefficient with the air equals that obtained with water at 1.5 m/s. Determine the velocity required and comment on the feasibility of the engineer's suggestion. Note that the speed of sound in air at 100°C is 387 m/s.

Problem 6.24

High-pressure water at a bulk inlet temperature of 93°C is flowing with a velocity of 1.5 m/s through a 0.015-m-diameter tube, 0.3 m long. If the tube wall temperature is 204°C, determine the average heat transfer coefficient and estimate the bulk temperature rise of the water.

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92036924

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