advantages | diadvantages | |
Centrifugal pumps | + High capacities possible (> 5000 m3/hr) + Cheap + Simple + Pulsless capacity |
- Small heads (< 500 m) - Not self priming - Not suitable for viscous liquids (>200 cSt) |
Positive displacement pumps | + High heads (>5000 m) + Suitable for high viscosities (150-10,000 cSt) + Variable speed with constant efficiency + Mostly self priming |
- Low capacities (<100 m3/hr) - Complicated and heavy - Not leak free - Relatively expensive |
Capacity: | 500 m3/hr | |
Vertical distance between tanker bottom and quay: | 20 m | |
Total head (including friction head): | 60 m | |
Viscosity methanol (25 &grad;C): | 0,69 cSt (water = 1 cSt) |