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Engineering and Tech / Fundamentals of Thermodynamcs 8 / Chapter 4 / Problem 145HP

Fundamentals of Thermodynamcs | 8th Edition | ISBN: 9781118131992 | Authors: Claus Borgnakke, Richard E. Sonntag

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Assume a setup similar to that of the previous problem,

Chapter 4, Problem 145HP

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QUESTION:

Problem 145HP

Assume a setup similar to that of the previous problem, but with the air flowing in the opposite direction as the glass—it comes in where the glass goes out. How much air flow at 17°C is required to cool the glass to 450 K, assuming the air must be at least 120 K cooler than the glass at any location?

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QUESTION:

Problem 145HP

Assume a setup similar to that of the previous problem, but with the air flowing in the opposite direction as the glass—it comes in where the glass goes out. How much air flow at 17°C is required to cool the glass to 450 K, assuming the air must be at least 120 K cooler than the glass at any location?

ANSWER:

Solution

Step 1 of 3

We need t o find out how much airflow is required to cool the glass.

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