MR-HM 150.07 Bernoulli's principle Educational Equipment Bernoulli Experiment Bench Description • investigation and verification ofBernoulli’s principle • static pressures and total pressure distribution along the Venturi nozzle • determination of the flow coefficient at different flow rates Bernoulli’s principle describes the relationship between the flow velocity of afluid and its pressure. An increase in velocity leads to a reduction in pressure ina flowing fluid, and vice versa. The totalpressure of the fluid remains constant. Bernoulli’s equation is also known as theprinciple of conservation of energy of theflow. The MR-HM 150.07 experimental unit isused to demonstrate Bernoulli’s principle by determining the pressures in aVenturi nozzle. The experimental unit includes a pipesection with a transparent Venturinozzle and a movable Pitot tube formeasuring the total pressure. The Pitottube is located within the Venturi nozzle,where it is displaced axially. The positionof the Pitot tube can be observedthrough the Venturi nozzle’s transparentfront panel. The Venturi nozzle is equipped with pressure measuring points to determine thestatic pressures. The pressures are displayed on the six tube manometers. Thetotal pressure is measured by the Pitottube and displayed on another singletube manometer. The experimental unit is positioned easily and securely on the work surface ofthe MR-HM 150 base module. The water issupplied and the flow rate measured byMR-HM 150. Alternatively, the experimentalunit can be operated by the laboratorysupply. Learning objectives/experiments • energy conversion in divergent/convergent pipe flow • recording the pressure curve in a Venturi nozzle • recording the velocity curve in a Venturi nozzle • determining the flow coefficient • recognising friction effects Specification [1] familiarisation with Bernoulli’s principle [2] Venturi nozzle with transparent front panel andmeasuring points for measuring the static pressures [3] axially movable Pitot tube for determining the totalpressure at various points within the Venturi nozzle [4] 6 tube manometers for displaying the static pressures [5] single tube manometer for displaying the total pressure [6] flow rate determined by MR-HM 150 base module [7] water supply using MR-HM 150 base module or vialaboratory supply Technical data Venturi nozzle • A: 84…338mm2 • angle at the inlet: 10,5° • angle at the outlet: 4° Pitot tube • movable range: 0…200mm • diameter: 4mm Pipes and pipe connectors: PVC Measuring ranges • pressure: · 0…290mmWC (static pressure) · 0…370mmWC (total pressure) LxWxH: 1100x680x900mm Weight: approx. 28kg Required for operation MR-HM 150 (closed water circuit) or water connection,drain Scope of delivery 1 experimental unit 1 set of instructional material
