Find the second-law efficiency of the turbine
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A compressor is used to bring saturated water vapor at 1 MPa up to 15 MPa where actual exit temperature. Find the irreversibility and the second-law efficiency.
How much will Fred be willing to lend to Ted in return for $1,000 two years from now if he uses a compounded interest rate per year.
The actual specific work is 210 kJ/kg, and the isentropic efficiency is 82%. Find the exit pressure and the second-law efficiency.
After the two periods, how much interest has been paid on the principal amount?
A steam turbine receives 5 kg/s steam at 400oC, 10 MPa. One flow of 0.8 kg/s is extracted at 3 MPa as saturated. Find the second-law efficiency of the turbine.
Suppose you deposit $1,000 into a savings account that earns interest at the rate of 4%, compounded annually.
Find the exergy at the initial and final states and the destruction of exergy in the process.
The intercooler in the previous problem uses cold liquid water to cool nitrogen. Find the flow rate of the water and the exergy destruction in this intercooler.
What pattern of cash flows, an ordinary annuity or an annuity due, does a rental agreement follow?
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