A boiler feed pump delivers 100 ft3/min of water at 400 F,

Chapter 2, Problem 155EUP

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QUESTION: Problem 155EUPA boiler feed pump delivers 100 ft3/min of water at 400 F, 3000 lbf/in.2 What is the mass flow rate (lbm/s)? What would be the percent error if the properties of saturated liquid at 400 F were used in the calculation? What if the properties of saturated liquid at 3000 lbf/in.2 were used?

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QUESTION: Problem 155EUPA boiler feed pump delivers 100 ft3/min of water at 400 F, 3000 lbf/in.2 What is the mass flow rate (lbm/s)? What would be the percent error if the properties of saturated liquid at 400 F were used in the calculation? What if the properties of saturated liquid at 3000 lbf/in.2 were used?

ANSWER:

Solution 155EUP

Step 1 of 4

Here we have to calculate the mass flow rate for given different cases.

Given data,

Volume flow rate,

Using                                  

Temperature,

Pressure,

To find,

Mass flow rate,

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