Question 1 of 6
Intermediate

The higher the CV value, the lower the friction loss across the device?

Question 2 of 6
Intermediate

How many basic boiler types exist?

Question 3 of 6
Intermediate

Which kind of pumps are used in boiler systems?

Question 4 of 6
Intermediate

Which is most likely cause for the need to constantly bleed air out of system?

Question 5 of 6
Intermediate

Why is cavitation always an issue in boiler feed applications?

Question 6 of 6
Intermediate

Which of the following parameters are not a part of the NPSHA calculation?

Question 6 of 6
Intermediate

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1: The higher the CV value, the lower the friction loss across the device?
True
1: The higher the CV value, the lower the friction loss across the device?
False
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2: How many basic boiler types exist?
1
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2: How many basic boiler types exist?
3
2: How many basic boiler types exist?
5
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2: How many basic boiler types exist?
7
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3: Which kind of pumps are used in boiler systems?
Single stage centrifugal pump
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3: Which kind of pumps are used in boiler systems?
Piston pump
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3: Which kind of pumps are used in boiler systems?
Multi-stage centrifugal pump
3: Which kind of pumps are used in boiler systems?
Screw spindle pump
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3: Which kind of pumps are used in boiler systems?
Dosing pump
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4: Which is most likely cause for the need to constantly bleed air out of system?
Low return water temperature
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4: Which is most likely cause for the need to constantly bleed air out of system?
High points in the piping, such as crossing up and over a beam
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4: Which is most likely cause for the need to constantly bleed air out of system?
Not “pumping away”
4: Which is most likely cause for the need to constantly bleed air out of system?
Long vertical runs without a high point
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5: Why is cavitation always an issue in boiler feed applications?
The pumps are all ways sized too small
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5: Why is cavitation always an issue in boiler feed applications?
Because of the chemicals used in the boiler water
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5: Why is cavitation always an issue in boiler feed applications?
The water is always at boiling temperature.
5: Why is cavitation always an issue in boiler feed applications?
The boiler feed pump always has a negative suction lift from a well
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6: Which of the following parameters are not a part of the NPSHA calculation?
hb = Pressure inside the deaerator
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6: Which of the following parameters are not a part of the NPSHA calculation?
hf = Friction loss in the suction pipe
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6: Which of the following parameters are not a part of the NPSHA calculation?
hv = Vapour pressure of the liquid
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6: Which of the following parameters are not a part of the NPSHA calculation?
hR = Regulation valve size
6: Which of the following parameters are not a part of the NPSHA calculation?
hgeo = Is the water level above or under the pump inlet
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6: Which of the following parameters are not a part of the NPSHA calculation?
hs = Safety factor
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