MR-HM 150.16 Series and parallel configuration of pumps Teaching Equipment Hydraulic Bench Description • series and parallel configurationof pumps • determining pump characteristiccurves
In complex systems, pumps can be connected in series or in parallel. In seriesoperation the heads are added togetherand in parallel operation, the flow ratesof the pumps are added. Series and parallel configuration of pumps behave similar to series and parallel configurationof electric resistances in electric circuits. The pump correlates with the electric resistance, the flow correlates withthe electric current and the head withthe voltage. With MR-HM 150.16 pumps are studied individually, in series and in parallel configuration. The experimental unit contains twoidentical centrifugal pumps and an intake tank with overflow. The overflow ensures a constant suction head in thetank, regardless of the water supply. Ballvalves in the pipes allow easy switchingbetween series and parallel operation. Pressures at inlet and outlet of the twopumps are displayed on manometers. 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 • investigation of pumps in series andparallel configuration · determining the head · recording the pump characteristics · determining the hydraulic power · determining the operating point
Specification [1] investigation of series and parallel configuration ofpumps [2] two identical centrifugal pumps [3] transparent tank as intake tank [4] overflow in the tank ensures constant suction head [5] ball valves used to switch between series and parallel operation [6] manometers at inlet and outlet of each pump [7] flow rate determined by base module MR-HM 150 [8] water supply via MR-HM 150 or via laboratory supply
Technical data 2x centrifugal pump • power consumption: 370W • max. flow rate: 21L/min • max. head: 12m Tank: 13L Pipes and pipe connections: PVC
Measuring ranges • pressure (inlet): 2x -1…1,5bar • pressure (outlet): 3x 0…2,5bar 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1110x650x500mm Weight: approx. 62kg Required for operation MR-HM 150 (closed water circuit) or water connection,drain Scope of delivery 1 experimental unit 1 set of instructional material