Question: A steady-flow boiler is essentially a long, heated, variable-area duct with liquid water coming in at one end and steam coming out at the other

A steady-flow boiler is essentially a long, heated, variable-area duct with liquid water coming in at one end and steam coming out at the other end. Water enters at 420 K and 20 MPa and leaves at 880 K and 20 MPa. Determine the ratio of the outlet area to the inlet area if the outlet velocity is equal to the inlet velocity.

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