3. Mass Transfer from a Pipe Wall. Air at 52.6 °C and 1 atm abs pressure passes through a pipe with naphthalene lining. The pipe's diameter in 25 mm. The vapor pressure of naphthalene at 52.6 °C is 1.0 mm Hg. The diffusivity in air of naphthalene at 0 °C is 5.16x10 m²/s. For a 0.20 m section of a pipe that is lined with naphthalene calculate the exiting concentration if the entering air carries 0.001 kgmol/m of naphthalene and has a velocity of 0.30 m/s. A.3-3 Physical Properties of Air at 101.325 kPa (1 Atm Abs), SI Units ux 10 (Pa-s, or (K) (kg/m) (kJ/kg - K) kg/m s) (Wim- K) N, (1/K) Bx 10 9Bp l4 (1/K - m') T (°C) 2.79 x 10 2.04 x 10 1.72 x 10 0.02250 0.720 3.92 -17.8 255.4 1.379 1.0048 273.2 1.293 10.0 283.2 1.246 1.0048 37.8 311.0 1.137 1.62 1.0048 1.72 0.02423 0.715 3.65 1.78 0.02492 0.713 3.53 0.02700 0.705 3.22 1.12 x 10 0.02925 0.702 2.95 0.775 x 10* 2.15 0.03115 0.694 2.74 0.534 x 10 0.03323 0.692 2.54 0.386 x 10* 0.03531 0.689 2.38 0.289 x 10 0.03721 0.687 2.21 0.214 x 10 0.03894 0.686 2.09 0.168 x 10 0.04084 0.684 1.98 0.130 x 10 2.80 0.04258 0.680 1.87 0.104 x 10 1.0048 1.90 2.03 65.6 338.8 1.043 1.0090 93.3 366.5 0.964 1.0090 121.1 394.3 0.895 1.0132 148.9 422.1 0.838 1.0174 2.27 2.37 176.7 449.9 0.785 1.0216 2.50 2.60 204.4 477.6 0.740 1.0258 232.2 505.4 0.700 1.0300 260.0 533.2 0.662 1.0341 2.71
3. Mass Transfer from a Pipe Wall. Air at 52.6 °C and 1 atm abs pressure passes through a pipe with naphthalene lining. The pipe's diameter in 25 mm. The vapor pressure of naphthalene at 52.6 °C is 1.0 mm Hg. The diffusivity in air of naphthalene at 0 °C is 5.16x10 m²/s. For a 0.20 m section of a pipe that is lined with naphthalene calculate the exiting concentration if the entering air carries 0.001 kgmol/m of naphthalene and has a velocity of 0.30 m/s. A.3-3 Physical Properties of Air at 101.325 kPa (1 Atm Abs), SI Units ux 10 (Pa-s, or (K) (kg/m) (kJ/kg - K) kg/m s) (Wim- K) N, (1/K) Bx 10 9Bp l4 (1/K - m') T (°C) 2.79 x 10 2.04 x 10 1.72 x 10 0.02250 0.720 3.92 -17.8 255.4 1.379 1.0048 273.2 1.293 10.0 283.2 1.246 1.0048 37.8 311.0 1.137 1.62 1.0048 1.72 0.02423 0.715 3.65 1.78 0.02492 0.713 3.53 0.02700 0.705 3.22 1.12 x 10 0.02925 0.702 2.95 0.775 x 10* 2.15 0.03115 0.694 2.74 0.534 x 10 0.03323 0.692 2.54 0.386 x 10* 0.03531 0.689 2.38 0.289 x 10 0.03721 0.687 2.21 0.214 x 10 0.03894 0.686 2.09 0.168 x 10 0.04084 0.684 1.98 0.130 x 10 2.80 0.04258 0.680 1.87 0.104 x 10 1.0048 1.90 2.03 65.6 338.8 1.043 1.0090 93.3 366.5 0.964 1.0090 121.1 394.3 0.895 1.0132 148.9 422.1 0.838 1.0174 2.27 2.37 176.7 449.9 0.785 1.0216 2.50 2.60 204.4 477.6 0.740 1.0258 232.2 505.4 0.700 1.0300 260.0 533.2 0.662 1.0341 2.71
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
Transcribed Image Text:3. Mass Transfer from a Pipe Wall. Air at 52.6 °C and 1 atm abs pressure passes through a pipe with naphthalene
lining. The pipe's diameter in 25 mm. The vapor pressure of naphthalene at 52.6 °C is 1.0 mm Hg. The diffusivity
in air of naphthalene at 0 °C is 5.16x106 m?/s. For a 0.20 m section of a pipe that is lined with naphthalene,
calculate the exiting concentration if the entering air carries 0.001 kgmol/m of naphthalene and has a velocity of
0.30 m/s.
A.3-3 Physical Properties of Air at 101.325 kPa (1 Atm Abs), SI Units
Ax 105
(Pa s, or
(K) (kg/m) (kJ/kg K) kg/m s) (W{m K) N, (1/K)
Bx 10 9Bp 1
(1/K -m)
k
(°C)
- 17.8 255.4 1.379
2.79 x 10%
2.04 x 108
1.72 x 10
1.12 x 10
0.02925 0.702 2.95 0.775 x 10
0.03115 0.694 2.74 0.534 x 108
0.03323 0.692 2.54 0.386 x 10*
0.03531 0.689 2.38 0.289 x 108
0.03721 0.687 2.21 0.214 x 108
0.03894 0.686 2.09 0.168 x 10*
0.04084 0.684 1.98 0.130 x 10
0.04258 0.680 1.87 0.104 x 108
1.62
0.02250 0.720 3.92
0.02423 0.715 3.65
1.0048
273.2 1.293
1.0048
1.72
10.0 283.2 1.246
1.0048
1.78
0.02492 0.713 3.53
37.8 311.0 1.137
1.0048
1.90
0.02700 0.705 3.22
65.6 338.8 1.043
1.0090
2.03
93.3 366.5 0.964 1.0090
2.15
121.1 394.3 0.895 1.0132
2.27
148.9 422.1 0.838 1.0174
2.37
176.7 449.9 0.785
1.0216
2.50
204.4 477.6 0.740 1.0258
2.60
232.2 505.4 0.700
1.0300
2.71
260.0 533.2 0.662
1.0341
2.80
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