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For the shown...

Question

For the shown Rankine cycle with one open feed water heater, the percentage of mass bled off for regeneration is______.

11.055

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Solution

The correct option is A 11.055
For a regenerative cycle with open feed water heater, if x production is bled off for regeneration, then
$x \times h_{2} + (1 - x) h_{3} = h_{6}$
or $x = \frac{h_{6} - h_{3}}{h_{2} - h_{3}}$
So, $x = \frac{680 - 395}{2973 - 395} = 0.11055$
$% x = 11.055 %$

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