Problem 3.14 Nozzle is 1 inches in diameter You are in charge of the pumping uni

Question

Problem 3.14

Nozzle is 1 inches in diameter

You are in charge of the pumping unit used to pressurize a large water tank on a tire truck. The fire that you are to extinguish is on the sixth floor of a building. 70 ft higher than the truck hose level, as shown in Fig. P3.14. Figure P3.14. What is the minimum pressure in the large tank for the water to reach the fire? Neglect pressure losses in the hose. What is the velocity of the water as it exits the hose? The diameter of the nozzle is 3.0 in. What is the flow rate in gallons per minute? Note that 1 gal/min equals 0.002228 ft3/s.

Explanation / Answer

a) min pressure = rho * g* h = 62.4 * 32.17 * 70 = 140.51 Kpa i know only first part , may be useful for you.

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