You are asked to consider replacing an old air compressor in a factory with a new, more efficient compressor, but you need to determine the energy savings for switching. Currently, the factory needs 2 kg/s of compressed air. The air intake to the compressor is 100 kPa and 15°C. The current compressor produces compressed air at 400 kPa and a temperature of 240°C. You find a new compressor that will produce the compressed air at 400 kPa with an isentropic efficiency of 80%. How much less power does the new compressor use than the old compressor?
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