Energy Balance and Energy Ratio

Energy balance and energy payback ratio

The terms "energy balance" and "energy payback ratio", or "energy ratio", are used to describe system energy output related to system energy input.

The energy balance can be expressed as

Eo = dE + Ei                    (1)

or

dE = Eo - Ei                     (1b)

where

dE = energy balance

Eo = energy output

Ei = energy input

The energy ratio - system energy output to system energy input - can be expressed as

ER = Eo / Ei                      (2)

where

ER = energy ratio

Related Topics

  • Environment - Climate, meteorology, sun, wind and environmental resources
  • Statics - Loads - force and torque, beams and columns

Related Documents

  • 1st Law of Thermodynamics - The First Law of Thermodynamics simply states that energy can be neither created nor destroyed (conservation of energy). Thus power generation processes and energy sources actually involve conversion of energy from one form to another, rather than creation of energy from nothing
  • Ratio and Proportion - The ratio and proportion between quantities

Tag Search

Search the Engineering ToolBox

- "Search is the most efficient way to navigate the Engineering ToolBox!"

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your SketchUp model with the Engineering ToolBox - SketchUp Extension/Plugin - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

Translate the Engineering ToolBox!
About the Engineering ToolBox!

close