ZM9111 Friction Loss in a Pipe Vocational Education Equipment For School Lab Hydraulic Bench Equipment
Description
The Friction Loss in a Pipe apparatus allows students to study the change in the laws of resistance for laminar to turbulent fl ow and fi nd the critical Reynolds number. The equipment is a small-bore, straight test pipe on a base plate. It works with our bench and stands on the hydraulic bench worktop. Static pressure tappings upstream and downstream of the test pipe connect to a water manometer or a handheld digital pressure meter (supplied). The back panel holds the manometer with calibrated scales. The water manometer measures lower diff erential pressures in the laminar and lower turbulent fl ow regions (just above the critical Reynolds Number). The pressure meter measures higher pressures in the turbulent fl ow region. The water manometer includes an air valve and hand-pump. The hand-pump adjusts the datum of the water manometer where necessary. A precision needle valve downstream of the test pipe accurately controls flow rate. To perform experiments, students stand the apparatus on the hydraulic bench and fi t the Header Tank (supplied) to the bench. For low fl ow rate experiments, the Header Tank supplies the test pipe. For higher fl ow rate experiments, the hydraulic bench supplies the test pipe directly. Students set the flow rate, measuring it by using a stopwatch to time the collection of water in a measuring vessel (both included). Students take readings of temperature from a thermometer (supplied) and readings of head from the manometer or the pressure meter. They then use the results to produce charts to help compare actual results with theory.
