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Procedure to Establish Critical Velocity of Fluid in a System that is Subject to Erosion Corrosion

IP.com Disclosure Number: IPCOM000050523D
Original Publication Date: 1982-Nov-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Zahavi, J: AUTHOR

Abstract

A series of experiments initially establish the critical values of particle concentration versus flow rate for particles of various size in a fluid system. This data is then organized to produce a plot of critical flow rate versus critical particle size. The actual particle size is known or can be measured, and the flow rate can be controlled. The system is operated at flow rates below the critical value to avoid the rapid deterioration through erosion-corrosion at the higher flow rates.

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Procedure to Establish Critical Velocity of Fluid in a System that is Subject to Erosion Corrosion

A series of experiments initially establish the critical values of particle concentration versus flow rate for particles of various size in a fluid system. This data is then organized to produce a plot of critical flow rate versus critical particle size. The actual particle size is known or can be measured, and the flow rate can be controlled. The system is operated at flow rates below the critical value to avoid the rapid deterioration through erosion-corrosion at the higher flow rates.

In a fluid-carrying system such as a pipe or a gas turbine, in which the fluid may be corrosive or may be contaminated with particles, erosion-corrosion can occur. Generally, erosion-corrosion increases very rapidly above critical values of particle size, particle concentration and flow rate. See Zahavi and Wagner, "Characterization of Erosion-Corrosion Processes" on pages 226 to 243 in the Proceedings of the Metallurgical Society of AIME, October 17-18, 1978. The paper describes the apparatus and technique for making these tests.

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