3B2 C8-11 (Chapter 8 - Compressor Theory and Designs Chapter 9 - Compressor Auxiliaries and Operation Chapter 10 - Refrigeration Principles and Systems Chapter 11 - Refrigeration Auxiliaries and Operation) Questions With Complete Solutions

3B2 C8-11 (Chapter 8 - Compressor Theory and Designs
Chapter 9 - Compressor Auxiliaries and Operation Chapter
10 - Refrigeration Principles and Systems Chapter 11 -
Refrigeration Auxiliaries and Operation) Questions With
Complete Solutions


The inlet piping to a compressor should be
_________________ to prevent _________________.
The _________________ to a compressor should be at least as
large as the compressor intake to prevent inlet flow
restriction.
The large volume of a wet air receiver creates
_________________ which _________________.
The _________________ of a wet air receiver creates low
velocity which encourages free water to drop to the bottom.
The dry air receiver contains a desiccant which removes
entrained moisture through _________________.
The dry air receiver contains a _________________ which
removes entrained moisture through adsorption.
The type of compressor chosen will depend on:
1) load requirement
2) operating cost
3)
The type of compressor chosen will depend on:

,1)
2)
3) if the air compressor is to be an oil-free or oil-lubricated
air compressor
The air filters designed to remove oil from the air are called
_________________.
The air filters designed to _________________ are
called coalescing filters.
The wet air receiver has the following important functions:
1) additional moisture separation
2)
3)
The wet air receiver has three important functions:
1)
2) stabilize the flow through the air dryers on system load
changes
3) provide storage capacity to prevent compression cycling
The dry air receiver serves several functions:
1) stabilizes system pressure
2) helps avoid overloading the air purification system when
demand surges
3)

,The dry air receiver serves several functions:
1)
2)
3) dampens out dew point and temperature spikes that
follow regeneration
In a system that uses a heated regeneration cycle for the air
dryers, the cooler and drier air in the dry air receiver helps to
dampen out the _________________ from the
_________________ from reinitialized regenerated towers.
In a system that uses a heated regeneration cycle for the air
dryers, the cooler and drier air in the _________________ helps
to dampen out the temperature and dew point increases from
the warm initial air flow from reinitialized regenerated towers.
The two types of filters used in an instrumentation air
system are _________________ and _________________.
The two types of filters used in an _________________
are prefilters and afterfilters.
The prefilters in an instrument air system are
_________________ filters if the compressor is not an oil free
design.
The prefilters in an instrument air system are coalescing filters if
_________________.
Coalescing filters help protect the dryer desiccant from
_________________.

, Coalescing filters help protect the _________________
from becoming contaminated with oil vapour and other
contaminants.
A coalescing filter contains _________________.
A _________________ filter contains a filtering media that
gathers together tiny moisture droplets from the air stream
as the air passes through the filter media.
An after filter is a _________________ filter that is
located downstream of the air dryers.
An after filter is a particulate filter that is located
_________________.
The after filter has a differential pressure gauge to indicate
_________________.
The after filter has a _________________ to indicate when the
filter media needs changing.
The purpose of the air dryers is _________________.
The purpose of the _________________ is to lower the dew
point of the air.
The two types of air dryers used in industry are
_________________ dryers and _________________ dryers.
The two types of _________________ used in industry
are refrigerated type and desiccant type.
The heatless type of desiccant dryer uses _________________.