5. A sample stream of dry gas is being withdrawn from a stack. The stack gases are at 200 °C and 730 mmHg. The stream flows through a heated filter, a set of cooled impingers, a small air pump, and them through a flow meter, as shown in Figure 1. The rate of flow is determined to be 30.0 liters/min at 20 °C and 790 mm Hg. a) Calculate the actual volumetric flow rate through the filter (at T = 200 °C and P = 730 mmHg). b) If 1.42 mg of solid particles are collected on the filter in 30 minutes, calculate the concentration of particles in the stack gas (in mg/m³)

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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5. A sample stream of dry gas is being withdrawn from a stack. The stack gases are at 200 °C
and 730 mmHg. The stream flows through a heated filter, a set of cooled impingers, a small
air pump, and them through a flow meter, as shown in Figure 1. The rate of flow is determined
to be 30.0 liters/min at 20 °C and 790 mm Hg.
a) Calculate the actual volumetric flow rate through the filter (at T = 200 °C and P =
730 mmHg).
b) If 1.42 mg of solid particles are collected on the filter in 30 minutes, calculate the
concentration of particles in the stack gas (in mg/m³)
temperature
sensor
probe-
-Qualse
reverse-type
heated area -
pitot tube
stack wall
thermometer
filter holder
pitot manometer thermometers impingers
bypass valve
orifice
thermometer
ice bath
check valve
main valve
silica gel
vacuum line
dry gas meter airtight
pump
Figure 1: EPA Method 5 - particulate sampling apparatus.
Transcribed Image Text:5. A sample stream of dry gas is being withdrawn from a stack. The stack gases are at 200 °C and 730 mmHg. The stream flows through a heated filter, a set of cooled impingers, a small air pump, and them through a flow meter, as shown in Figure 1. The rate of flow is determined to be 30.0 liters/min at 20 °C and 790 mm Hg. a) Calculate the actual volumetric flow rate through the filter (at T = 200 °C and P = 730 mmHg). b) If 1.42 mg of solid particles are collected on the filter in 30 minutes, calculate the concentration of particles in the stack gas (in mg/m³) temperature sensor probe- -Qualse reverse-type heated area - pitot tube stack wall thermometer filter holder pitot manometer thermometers impingers bypass valve orifice thermometer ice bath check valve main valve silica gel vacuum line dry gas meter airtight pump Figure 1: EPA Method 5 - particulate sampling apparatus.
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