A heat exchanger consists of 15 m of copper tubing with an internal diameter of 15 mm. There are 14 return elbows in the system with a loss coefficient of 2.2 for each elbow. The pump in the system has a pump curve given bywhere h_p0 is head provided by the pump at zero discharge and Q_max is 10^–3 m³/s. Water at 40°C flows through the system. Find the system operating point for values of hp0 of 2 m, 10 m, and 20 m.

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3- Q h, = hpo Qmax