Chapter 7, Problem 7.54P

The figure shows a turbine operating at a steady state that provides power to an air compressor and an electric generator. Air enters the turbine with a volumetric flow rate of 1.3 m³/s at 527°C, 10.0 bar and exits the turbine at 107°C, 1 bar. The turbine provides power of 900 kW to the compressor and 1400 kW to the generator. Air can be modeled as an ideal gas and kinetic and potential energy changes are negligible. a. Determine the mass flow rate of the air, in kg/s. b. For the turbine as the control volume, determine the rate of heat transfer, in kW. Air 1 Compressor Air W₁ = 900 kW (AV)1. P1 T₁ = 527°C Turbine 2 WEG = 1400 kW Electric Generator T₂ = 107°C P2 = 1 bar +

Air with a mass flow rate of 2.5 kg/s enters a horizontal nozzle operating at steady state at 480 K, 350 kPa, and velocity of 5 m/s. At the exit, the temperature is 300 K and the velocity is 450 m/s. Using the ideal gas model for air with constant cp=1.011 kJ/kg K, determine: (a) the area at the inlet, in m²; (b) Calculate the work done by the control volume and the flow work, in KW; . (c) the heat transfer to the nozzle from its surroundings, in kW.

THERMODYNAMICS - Conservation of Mass UPLOAD AND EXPLAIN COMPLETE SOLUTION. Consider steam that enters a turbine at 70 bar, 530oC with a velocity of 64 m/s. The turbine is operating at steady state conditions and the steam leaves the turbine as a dry saturated vapor at 10 bar. The inlet diameter of the turbine is 0.45 m and the outlet diameter is 3.6 m. Determine the mass flow rate of steam through the turbine.