Water flows through a valve (see Fig. P5.70) with a weight flowrate,m . g, of 1000 lb/s....

Water flows through a valve (see Fig. P5.70) with a weight flowrate,m . g, of 1000 lb/s. The pressure just upstream of the valve is 90 psi, and the pressure drop across the valve is 5 psi. The inside diameters of the valve inlet and exit pipes are 12 and 24 in. If the flow through the valve occurs in a horizontal plane, determine the loss in available energy across the valve.