Experimental study of pumps as turbines with height variation

• Main Authors: Sitorus, Tulus B., Telaumbanua, Iman, Hafid, Burhan, Napitupulu, Farel H., Ambarita, Himsar
• Format: Conference Proceeding
• Language: English
• Subjects: Alternative energy sources; Electric potential; Energy utilization; Pumps; Reservoirs; Turbines; Voltage
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0129968

Water energy utilization is the right thing to overcome the energy crisis we are against. Plants that utilize water energy are environmentally friendly and require minimal investment in their design. Pumps as turbines are one of the appropriate alternatives to optimize the utilization of this water energy. By reversing the workings of the pump that previously pumped the fluid, the PAT utilizes the flow pressure from a height to move the impeller and its shaft. This mechanical energy will then be passed on to the generator to be converted into electricity. This study conducted experimental studies to find out the pump’s performance as a turbine by varying the height of the reservoir. The test is set with a reservoir height of 5.18 m, and 9.28 m using the pump with a capacity is 1.25 m3/minute with a head of 12 m. The output rotation of the pump is transmitted to the generator with a pulley and belt and connected to a load is five light bulbs of 100 W. This study obtained a height of 5.18 m, the highest power obtained with a load of 100 Watt which is 68.1 Watt. The highest power is obtained with a load of 400 Watt and about 195 Watt. For voltage, the graph tends to increase over time. At the height of 5.28 m, it shows that the highest level at 100 Watt of loading produces a voltage of 227 Volt. While at the height of 9.28, the highest voltage at a loading of 400 Watt of 280 Volts.