4.2 A mixture of two gas flowsis used to calibrate an air pollution measurementinstrument. The calibration system is shown in Figure 4.23. If the calibration concentration Cealis 4.90 ppm,, the calibration gas flow rate Qeal is 0.010 L/min, and the total gas flow rate Qtotal is 1.000 L/min, what is the concentration of calibration tration upstream of the mixing point is zero. gas gas after mixing (C.)? Assume the concen- Qcal = 0.010 L/min Ceal = 4.90 ppm, Air inlet = 1.000 L/min C=0 Cd=?

Structural Analysis
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Chapter2: Loads On Structures
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Question 4.2

one signature requlres valldating.
The purpose of the pond is to allow time for the decay
of BOD to occur before discharge into the environ-
ment. BOD decays in the pond with a first-order rate
constant equal to 0.25/day. What is the BOD concen-
tration at the outflow of the pond, in units of mg/L?
4.2 A mixture of two gas flows is used to calibrate an
air pollution measurementinstrument. The calibration
system is shown in Figure 4.23. If the calibration gas
concentration Cealis 4.90ppm,, the calibration gas flow
rate Qeal is 0.010 L/min, and the total
Qtotal is 1.000 L/min, what is the concentration of
calibration gas
tration upstream of the mixing point is zero.
gas flow rate
after mixing (C)? Assume the concen-
0o=0.010 L/min
P3D4.90ppm,
Air inlet
C=0
O = 1.000 L/min
Cq = ?
Figure/4.23
Gas Calibration System.
Transcribed Image Text:one signature requlres valldating. The purpose of the pond is to allow time for the decay of BOD to occur before discharge into the environ- ment. BOD decays in the pond with a first-order rate constant equal to 0.25/day. What is the BOD concen- tration at the outflow of the pond, in units of mg/L? 4.2 A mixture of two gas flows is used to calibrate an air pollution measurementinstrument. The calibration system is shown in Figure 4.23. If the calibration gas concentration Cealis 4.90ppm,, the calibration gas flow rate Qeal is 0.010 L/min, and the total Qtotal is 1.000 L/min, what is the concentration of calibration gas tration upstream of the mixing point is zero. gas flow rate after mixing (C)? Assume the concen- 0o=0.010 L/min P3D4.90ppm, Air inlet C=0 O = 1.000 L/min Cq = ? Figure/4.23 Gas Calibration System.
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