RANCANG BANGUN DAN UJI UNJUK KERJA POMPA GEAR PADA SUHU FLUIDA 70 0 C (REDESIGN AND PERFOMANCE TEST FOR GEAR PUMP AT 70 DEGREES CELCIUS OF FLUIDS TEMPERATURE)

Abstract

The purpose of this research is cognizant of characteristic, transfer of fluid, and performance by operated Gear Pump. Material worked is ex lubricant which 77,905 cP viscosity then heated from atmospheric to 70 0 C by used heater and temperature of lubricant is guarded on 70 0 C by used thermostat. Valve are opened on 90 stroke and frequency inverter operated on 32 Hz up to 50 Hz take a rest 3 Hz. Variable for this research are frequency motor and stroke of valve. Circling (electric motor and pump),capacity (input and output), pressure (input and output), temperature (input and output) are analyzed every three minutes. The results for this research were: 1) Head optimum of pump system was 21,83 m height at 45 stroked valve and 50 Hz frequency. 2) Relative Volumetric Performance was taken a 61,05 % great at 90 stroked valve and 32 Hz frequency. 3) Relative Mechanic Performance was taken a 32,07 % great at 90 stroked valve and 50 Hz frequency. This research has been conclusion that circling, capacity, and pressure of each valve stroked as greater as developing of frequency, and type of this flow is laminar. keywords: Gear pump, frequency, stroke, head, performance