Chapter Five

QUESTION $03-$ Reaction $($Francis$)$ Turbine

$3\mathrm{.}1$ An Inward Flow Reaction has an overall efficiency of $74\%.$ The heat head across the turbine is $5,5m,$ and the required power output is $125$ kW $.$ The runner's tangential velocity is While the flow velocity is$.$ If the speed of the runner is $230$ rpm with hydraulic losses accounting for $18\%$ of the energy available, Determine$-$

$3\mathrm{.}1\mathrm{.}1$ the guide vane exit angle.

$3\mathrm{.}1\mathrm{.}2$ the inlet angle of the runner vane.

$3\mathrm{.}1\mathrm{.}3$ the runner $(3)$ inlet.

$3\mathrm{.}1\mathrm{.}4$ the height of the runner at the inlet.

$(5)$

$[17]$