Unit-3: First Law of Thermodynamics

Example: 

Flow Area of a Channel

The velocity of a stream of air is to be slowed by passing it through a flow channel which allows it to go from 50 kPa, -10^oC, and 700 m/s to 150 m/s. The process may be assumed to be quasi-static and adiabatic. Calculate the entrance and exit flow areas for a mass flow rate of 1.2 kg/s. (C_P = 1.005 kJ/kg.^oC.)