2. Specifications for an axial flow coolant pump for one loop of a pressurized water nuclear reactor are:

Head= 85m , Flow rate = 20000m * 3 / h * r Speed 1490 rpm, Diameter = 1200mm . Water density 714kg / m * 3 ,Power 4MW electrical)

The manufacturer plans to build a model. Test conditions limit the available electric power to 500 kW and flow to 0.5m * 3 / s of cold water (1000kg / m * 3) If the model and prototype efficiencies are assumed equal,

find the scale ratios, and speed, and head of the model. Calculate the dimensionless specific speed of the prototype and confirm that it is identical with the model.