A Review Of Design Analysis Methods For A Horizontal End Suction Centrifugal Pump

Abstract

Users of standard production model centrifugal pumps are frequently faces with the task of evaluation a group of very competitive bids. A thorough evaluation will involve both technical and commercial aspects of the submittals. As energy cost increase, the commercial value of a pump’s hydraulic efficiency becomes more significant. The vendor’s characteristic curve typically shows efficiencies which can be used to estimate power costs for a particular pump. Frequently, the type of pump discussed in this paper is a key component in a refinery or chemical process. Mechanical ruggedness may be more important than efficiency. This paper reviews some of the technical evaluation methods available to the user. The mechanical components of a horizontal end suction centrifugal pump are subjected to various hydraulic and/or mechanical forces. A determination of the magnitude and direction of such forces at various points along the characteristic curve permits further evaluation of the pump’s mechanical design for operation at best efficiency, minimum flow, runout, etc. An understanding of the principals involved herein should assist the user both in the initial equipment selection as well as troubleshooting after installation. The cause of a problem must normally be identified prior to its effective removal by modification of the equipment or the service,