A venturi meter similar to the one in Fig. 15.2 has an inlet diameter of 100 mm and a throat diameter of 50 mm. While it is carrying water at 80°C, a pressure difference of 55 kPa is observed between sections 1 and 2. Calculate the volume flow rate of water.

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Main pipe section Main pipe Throat section section Flow a =21°+20 a, = 50- 150 (b) Standard details of design O Hyspan