In the simplified depiction of an ice rink with an ice resurfacing machine operating (shown in Figure), points 1 and 3 represent the ventilation air intake and exhaust for the entire ice rink, and point 2 is the resurfacing machine's exhaust. Conditions at each point are (C indicates the concentration of carbon monoxide, CO): point 1: Q1=3.0 m3/s, C1=10 mg/m3; point 2: emission rate = 8 mg/s of nonreactive CO; point 3: Q3, C3 unknown. The ice rink volume (V) is 5.0 x 104 m3. (a) Define a control volume as the interior of the ice rink. What is the mass flux of CO into the control volume, in units of mg/s? (b) Assume that the resurfacing machine has been operating for a very long time, and that the air within the ice rink is well mixed. What is the concentration of CO within the ice rink, in units of mg/m3? loe Rink

In the simplified depiction of an ice rink with an ice resurfacing machine operating (shown in Figure), points 1 and 3 represent the ventilation air intake and exhaust for the entire ice rink, and point 2 is the resurfacing machine's exhaust. Conditions at each point are (C indicates the concentration of carbon monoxide, CO): point 1: Q1=3.0 m3/s, C1=10 mg/m3; point 2: emission rate = 8 mg/s of nonreactive CO; point 3: Q3, C3 unknown. The ice rink volume (V) is 5.0 x 104 m3. (a) Define a control volume as the interior of the ice rink. What is the mass flux of CO into the control volume, in units of mg/s? (b) Assume that the resurfacing machine has been operating for a very long time, and that the air within the ice rink is well mixed. What is the concentration of CO within the ice rink, in units of mg/m3? loe Rink

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter14: Computational Engineering Tools Electronic Spreadsheets

Section: Chapter Questions

Problem 18P

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In the simplified depiction of an ice rink with an ice resurfacing machine operating (shown in Figure), points
1 and 3 represent the ventilation air intake and exhaust for the entire ice rink, and point 2 is the resurfacing
machine's exhaust. Conditions at each point are (C indicates the concentration of carbon monoxide, CO):
point 1: Q1=3.0 m3/s, C1=10 mg/m3; point 2: emission rate = 8 mg/s of nonreactive CO; point 3: Q3, C3
unknown. The ice rink volume (V) is 5.0 x 104 m3. (a) Define a control volume as the interior of the ice rink.
What is the mass flux of CO into the control volume, in units of mg/s? (b) Assume that the resurfacing
machine has been operating for a very long time, and that the air within the ice rink is well mixed. What is
the concentration of CO within the ice rink, in units of mg/m3?
loe Rink

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