MODIFIKASI ALAT PERCOBAAN KAVITASI PADA VENTURE DENGAN POMPA JENIS TURBIN UNTUK FLUIDA AIR SISTEM TERTUTUP ( MODIFICATION OF CAVITATION TEST INSTRUMENT ON THE VENTURE WITH TURBIN TYPE PUMP FOR CLOSE FLUID CIRCUIT )

Abstract

Cavitation is water hammer emergence in the fluid flow because of the decrease, so the pressure is below its saturated vapor pressure. Cavitation causes noise and vibration which heard in a pump operation. If me keep operation the pump, cavitation will causes the decline of the pump work and in the next level, it will damage the instalation and the pump it self. The rearregement of the experience tool have been modified in order to compare between the use of cylindrical venture and cubic venture. The experiment is aimed to get the carecteristic data and now for the cavitation influence to ward the head, flow rate, rotation, efecyenci, and friction coeficient with varios temperature and it also rules water fluid and kerosene. By using the instalation system opened and closed, hopefully this experiment could reveal the difference, both in the vacum inthe atmosphere pressure condition. From the ressult of the experiment and the data analysis influince cavitation in venture with water fluid. It could be known caracteristic of the cavitation influence with total head 4,059 m, maximum flow rate 19 l/m in 20 0 C and the minimum flowrate 17,5 L/m and total head 3,134 m in 60 0 C of temperature, mean while the maximum temperature, than the maxium rotation 2029 rpm in 50 0 C. From the result of experiment conclusion couldbe drawn that carecteristic of cavitation happened in the defferent temperature Word key : cavitation, head, flowrate, water, venture.