Question
Download Solution PDFA 0.3 m diameter pipe carries oil of specific gravity 0.8 at flow velocity of 1.5 m/s and the pressure at a point A is 20 kN/m2 (gauge). If the point A is 3 m above the datum line, calculate the approximate total energy at point A in meters of oil.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The total energy at a point A (in m) = \(\frac{Pa}{\rho g}+\frac{V^{2}}{2g}\)+z
Where,
\(\frac{Pa}{\rho g}\)is pressure head
\(\frac{V^{2}}{2g}\) is velocity head.
Calculation:
Given,
Diameter = 0.3 m
Specific gravity =0.8
Flow velocity = 1.5 m/s
Pressure at point A = 20 kN/m2 or 20 kPa
Datum head = 3 m
So, The total energy at a point A (in m) = \(\frac{Pa}{\rho g}+\frac{V^{2}}{2g}\)+z
= \(\frac{20*1000}{0.8*1000*9.81 g}+\frac{1.5^{2}}{2*9.81}+3\)
= 2.54 +0.11 + 3 =5.65 m, which is near to option 3
Last updated on Jul 1, 2025
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