Effect of Jetpump Throat Diameter and Secondary Discharge on Suction Pressure and Pump Efficiency

Fatkhur Rohman (Universitas Muhammadiyah Sidoarjo)
Eka Candra Wijaya (Universitas Muhammadiyah Sidoarjo)

PELS (Procedia of Engineering and Life Science)
Vol 1 No 1 (2021): Proceedings of the 1st Seminar Nasional Sains 2021

The throat diameter is one of the main parts of the jetpump, the throat diameter is a mixing chamber which has the function of mixing low-speed secondary fluids with high-speed primary fluids. The purpose of this study was to determine the effect of the throat jetpump diameter with a variation of 7,9,11 mm and secondary discharge with a variation of 10,15,20 L / minute on the suction pressure and pump efficiency. The highest test results were variations in the throat diameter of 11 mm and secondary discharge of 20 L / minute with a net discharge of 3.8 L / minute, an average discharge of 23.8 L / minute, a suction pressure of -0.25 and an efficiency value pump by 50%, the larger the throat diameter the greater the flow rate obtained.