A pumping system for hot water is shown in the diagram below. A tank of hot...

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A pumping system for hot water is shown in the diagram below. A tank of hot water is open to atmosphere, and the liquid level is 0.4m above the tank outlet. A pump is connected to the tank outlet via a 25mm (nominal pipe size) cast iron schedule 40 pipe which is 1.2m long. The pipe feeds a pump, which operates at 0.001 m³/s. A valve on the pump suction line has a loss coefficient of 0.2. As is common with most centrifugal pumps, a pressure drop of 6 kPa is induced right at the impeller on the pump suction. What is the maximum temperature the hot water can be (in °C) without risking pump cavitation? Assume the tank is open to the atmosphere and the density of the hot water is 1000 kg/m³. Use linear interpolation where necessary to find your answer. 0.4 m valve 1.2 m pump A pumping system for hot water is shown in the diagram below. A tank of hot water is open to atmosphere, and the liquid level is 0.4m above the tank outlet. A pump is connected to the tank outlet via a 25mm (nominal pipe size) cast iron schedule 40 pipe which is 1.2m long. The pipe feeds a pump, which operates at 0.001 m³/s. A valve on the pump suction line has a loss coefficient of 0.2. As is common with most centrifugal pumps, a pressure drop of 6 kPa is induced right at the impeller on the pump suction. What is the maximum temperature the hot water can be (in °C) without risking pump cavitation? Assume the tank is open to the atmosphere and the density of the hot water is 1000 kg/m³. Use linear interpolation where necessary to find your answer. 0.4 m valve 1.2 m pump

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ANSWER To determine the maximum temperature of the hot water without risking pump cavitation we need to consider the pressure conditions at the pump suction Cavitation occurs when the pressure at the ... View the full answer