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TeachMeFinance.com - explain Energy grade line (EGL) (energy line, energy gradient) Energy grade line (EGL) (energy line, energy gradient) The term 'Energy grade line (EGL) (energy line, energy gradient)' as it applies to the area of reclamation can be defined as ' The line showing the total energy at any point in a pipe. The total energy in the flow of the section with reference to a datum line is the sum of the elevation of the pipe centerline, the piezometric height (or pressure head), and the velocity head. The energy grade line will slope (drop) in the direction of flow except where energy is added by mechanical devices. The line representing the elevation of the total head of flow is the energy line. The slope of the line is known as the energy gradient. See hydraulic grade line'. Previous 5 Terms: Energy Efficiency Energy efficiency, Electricity Energy efficient motors Energy exchange Energy expenditures Next 5 Terms: Energy Helicity Index Energy information Energy Information Administration (EIA) Energy Intensity Energy intensity (Commercial Buildings Energy Consumption Survey) About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.