Improvement in the Efficiency of an Impeller by Projecting the Vane into the Eye

✍ Scribed by P. Kalokasis; C.B. Akritidis

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 120 KB
• Volume: 75
• Category: Article
• ISSN: 0021-8634
• DOI: 10.1006/jaer.1999.0518

✦ Synopsis

The in#uence of the vane geometry on the hydraulic losses at the inlet of a centrifugal pump impeller has been investigated in this work. The edge of each vane has been projected into the eye, at di!erent lengths, and the pump characteristics (#ow rate, total head, speed and energy input) were measured in each case. Then the overall e$ciency of the pump was calculated using the collected data. The tests were run in a closed cycle test rig. A signi"cant increase of the e$ciency of the pump can be obtained by projecting the vanes into the eye of the impeller. Also, the total head of the pump increases depending on the length of the projection and the speed of rotation.