1.Two streams of air are mixed in a steady-flow mixing chamber that has two inlets and a single exit. Specifically, 1 m³ /s of air at 120 kPa, 40°C is mixed with 2 m³ /s of air at 120 kPa, 90°C, resulting in a mixture at 120 kPa and 70 °C. The part of the pipe that contains the mixture has a cross-sectional area of 0.1 m². Determine the mass flow rate of the two entering airstreams and the velocity of the air mixture. [Ans: 1.335 kg/s; 2.303 kg/s; 29.87 m/s]
1.Two streams of air are mixed in a steady-flow mixing chamber that has two inlets and a single exit. Specifically, 1 m³ /s of air at 120 kPa, 40°C is mixed with 2 m³ /s of air at 120 kPa, 90°C, resulting in a mixture at 120 kPa and 70 °C. The part of the pipe that contains the mixture has a cross-sectional area of 0.1 m². Determine the mass flow rate of the two entering airstreams and the velocity of the air mixture. [Ans: 1.335 kg/s; 2.303 kg/s; 29.87 m/s]
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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![First Law of Thermodynamics Conservation Mass
Show solution step by step.
1.Two streams of air are mixed in a steady-flow mixing chamber that has two inlets and
a single exit. Specifically, 1 m³ /s of air at 120 kPa, 40°C is mixed with 2 m3 /s of air at 120
kPa, 90°C, resulting in a mixture at 120 kPa and 70 °C. The part of the pipe that contains
the mixture has a cross-sectional area of 0.1 m2. Determine the mass flow rate of the two
entering airstreams and the velocity of the air mixture.
[Ans: 1.335 kg/s; 2.303 kg/s; 29.87 m/s]
2.Dry air enters an industrial dryer with a pressure of 101 kPa, a temperature of 250°C,
and at a mass flow rate of 2.6 kg/h through a duct with a cross-sectional area of 0.85 m?.
A wet material is placed inside the dryer, and its rate of drying is 5.5 g/min. Determine the
mass flow rate of gases leaving the dryer and the average velocity of air entering the
dryer, assuming steady operation.
[Ans: 4.547 m/h]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3bce8720-5119-4e35-b24f-168868868a24%2Fcfe5fcc5-1868-4762-b5ec-876d1f5a1efd%2F6i5r8p_processed.png&w=3840&q=75)
Transcribed Image Text:First Law of Thermodynamics Conservation Mass
Show solution step by step.
1.Two streams of air are mixed in a steady-flow mixing chamber that has two inlets and
a single exit. Specifically, 1 m³ /s of air at 120 kPa, 40°C is mixed with 2 m3 /s of air at 120
kPa, 90°C, resulting in a mixture at 120 kPa and 70 °C. The part of the pipe that contains
the mixture has a cross-sectional area of 0.1 m2. Determine the mass flow rate of the two
entering airstreams and the velocity of the air mixture.
[Ans: 1.335 kg/s; 2.303 kg/s; 29.87 m/s]
2.Dry air enters an industrial dryer with a pressure of 101 kPa, a temperature of 250°C,
and at a mass flow rate of 2.6 kg/h through a duct with a cross-sectional area of 0.85 m?.
A wet material is placed inside the dryer, and its rate of drying is 5.5 g/min. Determine the
mass flow rate of gases leaving the dryer and the average velocity of air entering the
dryer, assuming steady operation.
[Ans: 4.547 m/h]
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