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Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of 45 MW. Steam enters the turbine at 7 MPa and 500C and is cooled in the condenser at a pressure of 10 kPa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/s. Assume an isentropic efficiency of 87 percent for both the turbine and the pump. Determine (a) the thermal efficiency of the cycle, (b) the mass flow rate of the steam, and (c) the temperature of the cooling water.
How long wi1l it take for the mid plane temperature to achieve 50% of its maximum possible temperature reduction?
A car and a high -speed trian at constant speeds. three seconds after the train passes under the highway bridge the car crosses the bridge.
1. air is to be compressed from 1 atm and 298 k to 8 atm at a rate of 20000 lmin. a determine if this process should be
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a football player releases a ball with an initial velocity 80 fts at an angle 35 degrees above the horizontal.
an adiabatic steam turbine operates at steady state with inlet conditions p1500 kpa t1360 c steam leaves the turbine at
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modified brayton cycle is to be analyzed using the air-standard assumption with constant specific heats at a
Assume they test null hypothesis H0: versus H1: Will the engineers decide to use the steel if H0 is rejected? Will the engineers decide to use the steel if H0 is not rejected?
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