Energy is imparted to the liquid by means of a disk with curved vanes rotating on a shaft called the impeller. Basics concepts of operation, maintenance, and troubleshooting, part i. An increase in the fluid pressure from the pump inlet to. It is a member of a family known as rotary machines and consists of two basic parts. California state polytechnic university, pomona mechanical engineering department memorandum to. Fluid mechanics centrifugal pump performance experiment 1. The pumps role is to provide sufficient pressure to move the fluid through the system at the desired flow rate. The centrifugal compressor is a dynamic device similar to a centrifugal water pump. There is no math, just simple explanations of how pump systems work and how to select a centrifugal pump. Fundamentals of fluid mechanics chapter 12 pumps and. Basic concepts of operation, maintenance, and troubleshooting part i introduction the operating manual of any centrifugal pump often starts with a general statement, your centrifugal pump will give you completely trouble free and satisfactory service only. Centrifugal pumps develop pressure by increasing the velocity of the liquid liquid is literally flung out of the cutwater.
Daikin chillers use liquid refrigerant cooled hermetic electric motors. Typical selection criteria for centrifugal pumps are their design data flow rate or capac ity q, discharge head h, speed of rotation n and npsh, the. In this paper, centrifugal pump is analyzed by using a singlestage end suction centrifugal pump. Positive displacement pumps allow liquid to flow into an open cavity trap the liquid in the. Basic principles for the design of centrifugal pump. For those who want to do detail calculations, some examples have been included in the appendices. The compressor assembly is made up of a prime mover and a centrifugal compressor. Design and significant effect of a centrifugal pump by. Centrifugal pumps basically consist of a stationary pump casing and an impeller mounted on a rotating shaft. Centrifugal pumps also require that the fluid be available to the pumps suction nozzle. Basic principles for the design of basic principles for the design of centrifugal pump installations centrifugal pump installations sterling fluid systems group. This tutorial is intended for anyone that has an interest in centrifugal pumps. The basic pump parameters can be subdivided into those that deal with purely hydraulicliquid aspects and those. It raises the pressure and temperature of the refrigerant by converting kinetic energy into pressure.
The centrifugal pump is an extremely simple machine. Centrifugal pumps can be classified based on the manner in which fluid flows through the pump. Among the pumps available, the centrifugal pumps have attracted worldwide interest because centrifugal flow pumps have high efficiency. The figure at the top of the following page is a cross section of a centrifugal pump and shows the two basic parts. The majority of pumps produced by grundfos are centrifugal pumps. Velocity diagrams at the inlet and exit of a centrifugal pump impeller.
This portable document format \ pdf \ file contains bookmarks, thumbnails, and hyperlinks to help you navigate through the document. Basic pump parameters and the affinity laws instructor. Two main components of a centrifugal pump are the impeller and the casing. Fluid mechanics centrifugal pump performance experiment.
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