Throttle FlowR-134a is throttled in a line flowing at

Chapter 4, Problem 39HP

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QUESTION:

Problem 39HP

Throttle Flow

R-134a is throttled in a line flowing at 25°C, 750 kPa with negligible kinetic energy to a pressure of 165 kPa. Find the exit temperature and the ratio of the exit pipe diameter to that of the inlet pipe (Dex/Din) so that the velocity stays constant.

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QUESTION:

Problem 39HP

Throttle Flow

R-134a is throttled in a line flowing at 25°C, 750 kPa with negligible kinetic energy to a pressure of 165 kPa. Find the exit temperature and the ratio of the exit pipe diameter to that of the inlet pipe (Dex/Din) so that the velocity stays constant.

ANSWER:

Solution

Step 1 of 3

We need to find out the exit temperature and the ratio of the exit pipe diameter to that of the inlet pipe so that the velocity stays constant.

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