An air compressor auxiliary which will decrease the power requirement is the:
a. Receiver
b. Diffuser
c. Intercooler
d. Unloader
e. Aftercooler
Answer: C
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Power Engineering Chapter 75
- If there is a shut-off valve between the aftercooler and the receiver, the aftercooler must be fitted with a?
- Intercoolers should be provided with what on the cooling water side?
- Reasons for cooling of air in a compressor is?
- The use of an intercooler to cool the air between stages of compression will reduce the power required for compression by around __ %.
- Which compressor has moving blades attached to the rotor, alternating with fixed blades attached to the casing?
- Disadvantage of centrifugal compressor is?
- The rotary screw compressor uses multistage designs when the pressure is above ___ kpa.
- The rotary screw compressor is suitable for high speeds ranging from __ to __ r/min.
- Which compressor features two intermeshing rotors contained within a close fitting casing?
- Rotary lobe compressor single-stage pressure is __ kPa and __ kPa for two-stage.
- Rotary lobe compressor runs at speeds of __ r/min:
- Which compressor has two figure-eight shaped impellers revolving in opposite directions within a casing?
- The sliding vane compressor disadvantages are?
- Which compressor must have intake and discharge valves to control the flow of air entering and leaving?
- Which compressors are dynamic type?
- Air receivers
- An air receiver used in an air compression, system will perform the following functions: 1. act as a storage vessel 2. eliminates pulsation in discharge lines 3. will separate out water from the air 4. controls the temperature of the air before it enters the system
- Where pistons move in a cylinder it is necessary for the lubricant to provide
- The valves on a reciprocating compressor are opened by
- Relative to a dry-pipe fire system, an automatic air supply shall be connected so that proper pressure can be maintained in each system, is a statement of the
- Higher gearing is commonly used on
- Single stage reciprocating air compressors
- Positive displacement air compressor types are
- Compressed air machinery would most likely be used in
- To reduce air temperature between stages, we would use: