Compressors Flashcards

0
Q

When pressure is increased in an enclosed space the temperature…

increases or decreases

A

Increases

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1
Q

What are three ways pressure can be increased

A

Heat it
reduce the volume
add more gas into a confined space

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2
Q

Bernoulli’s principal and the law of conservation of energy apply to what

A

All fluids

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3
Q

What compressor has a sealed container where pressure is created on the inside surfaces by molecules of gas striking the surface creating a force

A

Positive displacement compressor

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4
Q

How does a dynamic compressor operate

A

Using bernoulli’s principle.

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5
Q

What does an absolute scale measure

A

Temperature and pressure

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6
Q

What are the two absolute temperature scales

A

Kelvin and Rankin

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7
Q

0° Kelvin is equal to what in degrees Celsius

A

-273°C

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8
Q

0° Rankine is equal to what in degrees Fahrenheit

A

-459°F

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9
Q

What does PSIA stand for

A

Pounds per square inch absolute

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10
Q

What does KPA stand for

A

Kilopascals

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11
Q

If all molecule motion has stopped and there is no pressure what is this called

A

Absolute pressure

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12
Q

Does gauge pressure account for atmosphere pressure

Yes
No

A

No

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13
Q

What occurs when the pressure in a container or building is less than the pressure surrounding it

A

Vacuum

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14
Q

Three common devices for measuring pressure

A

Barometer
Manometer
Bourbon tube

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15
Q

What can a barometer measure

A

Vacuum and pressure

16
Q

A manometer is most accurate for measuring what

17
Q

What happens when the bourbon tube gauge pressure goes up.

A

Is the tube to straighten out

18
Q

What does Bernoulli’s principle deal with

A

It constant flow of fluid

19
Q

Combined gas law is a combination of which laws

A

Boyle, Charles and Gay-Lussic

20
Q

What happens to the atmospheric pressure if an increase in altitude Occurs

A

Atmospheric pressure decreases

21
Q

List some problems moisture has on a compressed air system

A

Causes rust
Harmful to lubricants
Forms sludge
In some cases can cause moisture to freeze

22
Q

What is a single acting compressor

A

Compression happens on one side of the piston

23
Q

What is a double-acting compressor

A

Compresses gases on both sides of the piston

24
Which compressors are the most common because of the widest range of operating suction and discharge pressures
Reciprocating compressors
25
The term single acting means what
Compression happens on one side of the piston
26
The term double acting compressor means what
The piston can compress gas on both sides
27
Can the labyrinth compressor run without oil
Yes....creating a seal between the cylinder in the piston with a series of grooves machined on the piston and cylinder wall
28
An integral compressor is essentially "what" combined into one frame with one common crankshaft
An engine and a compressor combined
29
What does the conrod connect to on a diaphragm compressor
Flexible membrane or a diaphragm
30
Where is a gas injection compressor most common
Oil production
31
How is gas lift slightly different than gas injection
Gas Passes through a series of lift valves pushing the oil out of the well
32
How many compressors are used for gas gathering
One central compressor to pull gas from a series of locations into one central pipeline
33
When doing coal seam gas evacuation what is mainly evacuated from the ground
Methane
34
Since gas producers can buy cheaper gas in the off-season what is the most cost-effective way of gathering gas in a field
A gas storage in an old oil well stored underground
35
How many kilometers should a boost station be from one another
150 to 300 km along the pipeline
36
What kind of compressors are commonly used in the compressor boost station application
Centrifuge compressors because they perform better with large volumes