Analisis Pengaruh Ketinggian Isap terhadap Performa Hidraulik Pompa Shimizu PS-130 BIT

Water pumps are widely used to meet household clean water demands. One of the factors affecting pump performance is suction height, as it influences flow capacity, head, efficiency, and the potential occurrence of cavitation. This study aimed to analyze the effect of suction height on the performance of the Shimizu PS-130 BIT pump in terms of flow capacity, total head, pump efficiency, and cavitation tendency. The research was conducted using a quantitative experimental method. The suction height variations applied were 2 m, 4 m, and 6 m. Testing was carried out by measuring flow rate, suction pressure, discharge pressure, and calculating head losses and pump efficiency for each suction height variation. The experimental data were then analyzed to determine the performance characteristics of the pump under different operating conditions.The results showed that increasing suction height led to a decrease in pump flow capacity from 0.000325 m³/s at a suction height of 2 m to 0.000300 m³/s at a suction height of 6 m. The total head increased from 2.50 m at a suction height of 2 m to 6.27 m at a suction height of 6 m. Pump efficiency decreased with increasing suction height, with the highest efficiency of 27% obtained at a suction height of 2 m and the lowest efficiency of 25% at a suction height of 6 m. Increasing suction height also reduced the pressure on the suction side, thereby increasing the tendency for cavitation, which may reduce pump performance. Overall, suction height significantly affected the hydraulic characteristics of the Shimizu PS-130 BIT pump, where lower suction heights resulted in better flow capacity and pump efficiency.