1. Engineering
  2. Mechanical Engineering
  3. 2 p1 relative b rajah 3afigure 3a a centrifugal...

Question: 2 p1 relative b rajah 3afigure 3a a centrifugal...

Question details

2 P1 relative βι B, Rajah 3a/Figure 3a

A centrifugal pump is being designed to pump liquid refrigerant R-134a at room temperature and atmospheric pressure. The impeller inlet and outlet radii are r100 and r2 180 mm respectively (Figure 3a). The impeller inlet and outlet widths are bl = 50 and b2-30 mm (Figure 3a). The pump is to deliver 0.25 m/s of the liquid at a net head of 14.5 m when the impeller rotates at 1720 rpm. Design the blade shape for the case in which these operating conditions are the design conditions of the pump (V,0, Figure 3a), specifically calculate angles B: and β2 and calculate the horsepower requirement of the pump. For R-134a, at T-20 °C, specific volume v 0.0008157 m/kg. (7 markah/marks)

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution