Seeking help with a calculation problem
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A pump has an inlet pipe diameter of 200 mm, a flow rate of Q = 7.78 L/s. The given performance parameter is H = 3.6 m; it is estimated that åh = 0.5 m. Calculate the required installation height under standard conditions as well as in the Lhasa area when pumping clean water at 40°C from an open container (Known: The atmospheric pressure in the Lhasa area is P¢=6.62 mHg; the saturated vapor pressure of liquid at the pumping temperature is P¢=7355 Pa; the density of pure water at 40°C is r¢=992.2 kg/m³. The performance parameters (H) specified for the pump are values measured under a standard atmospheric pressure of P=10.33 mHg and a saturated vapor pressure of pure water at 20°C of P=0.24 mHg.) ）
Ugh, seeing this reminds me of the exam days back in school; there must be fixed formulas for these, which can be applied directly.