What is the mass flow rate of air through the air compressor

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Reference no: EM131278133

During winter, the system of Prob. 10-102E must supply 2 × 10⁶ Btu/h of heat to the buildings. What is the mass flow rate of air through the air compressor and the system's total electrical power production in winter?

Prob. 10-102E:

It has been suggested that the steam passing through the condenser of the combined cycle in Prob. 10-101E be routed to buildings during the winter to heat them. When this is done, the pressure in the heating system where the steam is now condensed will have to be increased to 10 psia. How does this change the overall thermal efficiency of the combined cycle?

Prob. 10-101E:

Atmospheric air enters the air compressor of a simple combined gas-steam power system at 14.7 psia and 80°F. The air compressor's compression ratio is 10; the gas cycle's maximum temperature is 2100°F; and the air compressor and turbine have an isentropic efficiency of 90 percent. The gas leaves the heat exchanger 50°F hotter than the saturation temperature of the steam in the heat exchanger. The steam pressure in the heat exchanger is 800 psia, and the steam leaves the heat exchanger at 600°F. The steam-condenser pressure is 5 psia and the isentropic efficiency of the steam turbine is 95 percent. Determine the overall thermal efficiency of this combined cycle. For air, use constant specific heats at room temperature.

Reference no: EM131278133

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