Question



1- Calculate the net positive suction head (NPSH) of the pump using the following data. i) - Vapor pressure of liquid -2.685
2- Liquid octane shall be drawn from an open suction vessel at 20°C. The geometrical suction lift sl is 5 m, on the suction s
1- Calculate the net positive suction head (NPSH) of the pump using the following data. i) - Vapor pressure of liquid -2.685 x 104 Pa i) - Distance between the level of liquid in the reservoir and suction line 1.2 m. The pump is above the liquid level. ii) -The density of liquid 865 kg/m3 iv)- Friction in the suction line 3.5 J/kg v) - Reservoir is open to atmosphere
2- Liquid octane shall be drawn from an open suction vessel at 20°C. The geometrical suction lift sl is 5 m, on the suction surface there is an atmospheric pressure of 1 bar abs. Vapor pressure and density at 20 °C are vapor pressure 0.013 bar abs. and p - 700 kg/m3. The suction line friction loss including non- return valve is estimated at he 1 m. Calculate the 1. NPSHA 2. Maximum NPSHA
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WM di 2 I0 a 丁 3. S血-4-多 la字萨ー[?.ur. Given ,Tooba 8.381 m NPSH ב 2 5NPSH D0 2 mbn 4.38 m

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