The shower head in Fig P6.142 delivers water at 50°C. An orifice-type flow reducer is to be installed. The upstream pressure is constant at 400 kPa. What flow rate, in gal/min, results without the reducer? What reducer orifice diameter would decrease the flow by 40 percent?

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O 1.5 cm p -400 kPa Flow reducer 45 holes, 1 5-mm diameter