Solved: One lbm of butane (C4H10) is burned with 25 lbm of

Chapter 15, Problem 1523E

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QUESTION:

One lbm of butane (C4H10) is burned with 25 lbm of air that is at 908F and 14.7 psia. Assuming that the combustion is complete and the pressure of the products is 14.7 psia, determine (a) the percentage of theoretical air used and (b) the dew-point temperature of the products.

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QUESTION:

One lbm of butane (C4H10) is burned with 25 lbm of air that is at 908F and 14.7 psia. Assuming that the combustion is complete and the pressure of the products is 14.7 psia, determine (a) the percentage of theoretical air used and (b) the dew-point temperature of the products.

ANSWER:

Step 1 of 7

Butane is burned with air. The masses of butane and air are given. The percentage of theoretical air used and the dew-point temperature of the products are to be determined.

Assumptions  are

1. Combustion is complete.

2. The combustion products contain , , and  only.

3. Combustion gases are ideal gases.

The molar masses of C,, and air are , , and , respectively (Table A-1).

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