A. Cooling and lubricating compressor components
B. Improve the purity of compressed air
C. Reduce equipment noise
D. Increase equipment life
Answer: A
Analysis: The lubricating oil system of the oil-injected air compressor cools and lubricates the compressor components by injecting lubricating oil into the compression chamber.
A. Increase energy consumption B. Reduce noise C. Frequent start-ups and stops lead to loss D. Increase the exhaust temperature Answer: C Analysis: Insufficient capacity of the air storage tank will lead to frequent start-ups and stops of the air compressor and increase loss.
Answer: Ensure the installation site is clean, dry, and well-ventilated, and check the power supply and piping connections.
Answer: The motor power varies depending on the compressor model and flow demand, with specifications such as 5.5kW, 7.5kW, 11kW, etc.
A. 1-3% B. 8-12% C. 15-25% D. 30-40% Answer: C Analysis: The clearance volume of reciprocating air compressor causes a 15-25% efficiency decrease.
A. General B. Poor C. Better D. Very good answer: D. very good