Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2 /min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1. What is the delivery isothermal efficiency of the compressor percentages to 2 decimal places? 2. What is the delivery volume in terms of stroke volume, provide the coefficient values of the swept volume to 4 decimal places? 3. What is the induced volume per stroke in m3 to 6 decimal places?
Albert bought a portable device to pump his truck tyres. On the manual, he found out
that the device is a single stage, single-acting air compressor. Air delivery for this
device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location
is 87 kPa and 20 ˚C, with a FAD of 0.22 m2
/min. The clearance volume is 4% of the
swept volume and the stoke/bore ratio is 1.3/1.
Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K
1. What is the delivery isothermal efficiency of the compressor percentages to 2 decimal places?
2. What is the delivery volume in terms of stroke volume, provide the coefficient values of the swept volume to 4 decimal places?
3. What is the induced volume per stroke in m3 to 6 decimal places?
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