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

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

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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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