1200 cm3/sec of water at 420 K is pumped in a 40 mm internal diameter pipe...

1200 cm³/sec of water at 420 K is pumped in a 40 mm internal diameter pipe

through a length of 150 m in a horizontal direction and up through a vertical length of 10 m . In the pipe there is a control valve which may be taken as equivalent to 200 pipe diameters and other pipe fittings equivalent to 60 pipe diameter. Also in the line there is a heat exchanger across which there is a loss in head of 1.5 of water. What power must be delivered to the pump if the unit is 60% efficient?

PS: roughness factor not given

Expert Solution

Amanda K answered 1 year ago

) A 50 mm-diameter propeller was installed in a 150 mm-diameter water pipe and the propeller...

) A 50 mm-diameter propeller was installed in a 150 mm-diameter water pipe and the propeller speed was measured for a range of water discharge in the pipe. The water had a density and dynamic viscosity of 1000 kg/m3 and 0.00112 Ns/m2 respectively. The measured results were as follows: Q (litres/s): 12 28 45 63 95 120 160 180 N (rps): 5 10 15 20 30 40 60 80 Plot the dependence of propeller coefficient against propeller Reynolds number. A...

Water flows through a cast iron pipe with a diameter of 30 mm. The pipe is...

Water flows through a cast iron pipe with a diameter of 30 mm. The pipe is inclined at an angle of 3 degrees from horizontal and is 40 m long. The water flows due to gravity only. What is the maximum volume flow rate of the water? You may ignore any minor loses.

Water is flowing through a pipe having the diameter 200 mm and 100 mm at sections...

Water is flowing through a pipe having the diameter 200 mm and 100 mm at sections 1 and 2 respectively. The rate of flow through the pipe is 35 liters per second. The section 1 is 6000 mm and section 2 is 4000 mm above the datum line. If the pressure at the section 1 is 0.4 N/mm2, find the intensity of pressure at section 2.

A 50 mm internal diameter horizontal steel pipe carrying steam is covered by a 50 mm...

A 50 mm internal diameter horizontal steel pipe carrying steam is covered by a 50 mm thick layer of a ceramic insulation material and is tightly wrapped with a 0.5 mm thick layer of clean aluminum foil. The wall thickness of the steel pipe is 3.9 mm. The entire pipe is surrounded by air at 20°C. The emissivity of the aluminum foil can be taken as 0.05. Determine the steady-state temperature of the outside surface of the aluminum foil if...

A plain carbon steel ball 2 mm in diameter is heated to 1200 K in an...

A plain carbon steel ball 2 mm in diameter is heated to 1200 K in an oven and then cooled slowly in ambient air at 300 K. The convection heat transfer coefficient between air and this steel ball is 20 W / (m2 * K). You can find the density, specific heat and thermal conductivity from the property tables attached in text book with reasonable assumptions. Please derive an equation estimating the changes of the temperature of this ball with...

A cast iron water pipe of 500 mm inside diameter and 20 mm thick, is supported...

A cast iron water pipe of 500 mm inside diameter and 20 mm thick, is supported over a span of 10 meters. Find the maximum bending stress in the pipe metal, when the pipe is running full. Take density of cast iron = 70.6 kN/m3 and water = 9.8 kN/m3

A pipe, 900 m long and 200 mm in diameter discharges water to the atmosphere at...

A pipe, 900 m long and 200 mm in diameter discharges water to the atmosphere at a point 10 m below the inlet level. With an inlet pressure of 40 kPa gauge, the flow rate is 40 litres/sec. At a point half way between the pipe inlet and outlet, a new tapping is made from which water is taken at a rate of 18 litres/sec. To what value must the inlet pressure be raised in order to maintain the same...

The steel pipe (100 mm outer diameter) is covered with two layers of insulation. The 40...

The steel pipe (100 mm outer diameter) is covered with two layers of insulation. The 40 mm thick inner layer has a thermal conductivity of 0.07 W / (mK). Outer layer, 20 mm thick has a thermal conductivity of 0.15 W / (m K). The pipe is used to drain 500 kPa pressurized steam. The temperature on the outer insulation surface is 24 ° C. If the pipe is 8 m long, determine the following: (assuming that the conduction heat...

Two water reservoirs are joined by a sharp ended flexible pipe 100 mm in diameter and...

Two water reservoirs are joined by a sharp ended flexible pipe 100 mm in diameter and 36 m long. The ends of the pipe differ in level by 4 m. The surface level of the upper reservoir is 1.8 m above the pipe inlet whilst that of the lower reservoir is 1.2 m above the pipe outlet. At a position 7.5 m horizontally from the upper reservoir, the pipe is required to pass over a barrier. Assuming that the pipe...

(a) For a 1.25-in.-diameter pipe, what is the maximum volumetric flow rate at which water can be pumped and the flow will remain laminar?

(a) For a 1.25-in.-diameter pipe, what is the maximum volumetric flow rate at which water can be pumped and the flow will remain laminar? Express your result in the dimensions of gallons per minute. (b) What would be the maximum fl ow rate for SAE 30 oil?

Question