Unformatted text preview: directly. These devices are mainly similar to each other. However, the pressure drop in the orifice tube is higher than in the Venturi. Therefore, the head loss in the Venturi is lower than in the orifice. On the other hand, Venturi is more expensive than the orifice tube. I found from the calculation in table 2 and 3 that the error in comparing between (Q)exp and (Q)the are not exceed 5.70% for the orifice and 6.73% for the Venturi. The source of error may due to poor reading the manometer, measuring exact 5liter/sec for each run and may have some leaking in some part of the devices....
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- Fall '09
- Venturi, Orifice plate, 6.73%, 5.70%, 7.85%, 5liter