2. Air is compressed steadily by an adiabatic compressor from 100kPa, 27°C to 400kPa and 200°C and the power input of the compressor is 5kW. Assume constant specific heats, and neglect the changes in kinetic and potential energies. Determine; a. The mass flow rate of air through the compressor, in kg/s. b. The isentropic efficiency of the compressor, in K. c. The rate of entropy generation of air during this process, in kW/K. 400kPa 200°C Air Compressor 5kW 100kPa 27°C

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.