A drum$-$type steam generator operates at $17\mathrm{.}0$ MPa.

$1550$ kg$/$s of water descends through the downcomer,

cooled $7\mathrm{.}29$C below its saturation temperature.

The downcomer and risers are $11\mathrm{.}8$ m high. The

average density of the water$-$steam mixture in the

risers is $292$ kg$/$m$3.$

Pressure losses in the downcomer and risers total

$0\mathrm{.}467$ bar, exceeding the natural circulation driving

pressure.

Calculate the power $($kW$)$ needed to drive a forced

circulation pump to overcome the pressure losses, if

the isentropic efficiency of the pump is $77\mathrm{.}0\%.$