MR-HM 150.16 Series and parallel configuration of pumps Didactic Equipment Teaching Equipment Hydrodynamics Laboratory equipment
Description • series and parallel configuration of pumps • determining pump characteristic curves In complex systems, pumps can be connected in series or in parallel. In series operation the heads are added together and in parallel operation, the flow rates of the pumps are added. Series and parallel configuration of pumps behave similar to series and parallel configuration of electric resistances in electric circuits. The pump correlates with the electric resistance, the flow correlates with the electric current and the head with the voltage. With MR-HM 150.16 pumps are studied individually, in series and in parallel configuration. The experimental unit contains two identical centrifugal pumps and an intake tank with overflow. The overflow ensures a constant suction head in the tank, regardless of the water supply. Ball valves in the pipes allow easy switching between series and parallel operation. Pressures at inlet and outlet of the two pumps are displayed on manometers. The experimental unit is positioned easily and securely on the work surface of the MR-HM 150 base module. The water is supplied and the flow rate measured by MR-HM 150. Alternatively, the experimental unit can be operated by the laboratory supply. Learning objectives/experiments • investigation of pumps in series and parallel configuration · determining the head · recording the pump characteristics · determining the hydraulic power · determining the operating point Specification [1] investigation of series and parallel configuration of pumps [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
