The manager has been asked an engineer to propose a solution related to the air compressor. The air compressor is required to deliver air at 20 bar. The engineer has decided to use a single-stage with double-acting compressor with stroke to bore ratio of 1.2/1 and the clearance volume is 5% of the swept volume. The swept volume is 0.0003 m3. The compressor operates at 1400 rpm in free air condition of 1.02 bar and 24℃. Due to valve opening and heated cylinder wall, the actual induction conditions are 1.0 bar and 35℃. With the given index compression-expansion of 1.3 and specific gas constant R = 0.287 kJ/kg-K, you are required to help the engineer in solving the following issues: i. Sketch the related pressure-volume (p-V) diagram with appropriate label. ii. Calculate the volume induced per cycle, [m3]. iii. Calculate the free air delivery (FAD), [m3/min] iv. Determine the indicated power, [kW] v. Calculate the volumetric efficiency, [%]
The manager has been asked an engineer to propose a solution related to the air compressor. The air compressor is required to deliver air at 20 bar. The engineer has decided to use a single-stage with double-acting compressor with stroke to bore ratio of 1.2/1 and the clearance volume is 5% of the swept volume. The swept volume is 0.0003 m3. The compressor operates at 1400 rpm in free air condition of 1.02 bar and 24℃. Due to valve opening and heated cylinder wall, the actual induction conditions are 1.0 bar and 35℃. With the given index compression-expansion of 1.3 and specific gas constant R = 0.287 kJ/kg-K, you are required to help the engineer in solving the following issues:
i. Sketch the related pressure-volume (p-V) diagram with appropriate label.
ii. Calculate the volume induced per cycle, [m3].
iii. Calculate the free air delivery (FAD), [m3/min]
iv. Determine the indicated power, [kW]
v. Calculate the volumetric efficiency, [%]
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