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Talk:Water efficiency/Archive 1

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I'd like to see the concept of water efficiency given mathematical definition on this page. Given that:

"In physics and engineering, including mechanical and electrical engineering, energy efficiency is a dimensionless number, with a value between 0 and 1 or, when multiplied by 100, is given as a percentage. The energy efficiency of a process is defined as

where W is the amount of useful work done by the process (in joules), and "energy" E is the quantity of energy (again, in joules) used to run the process.

Energy efficiency within a closed system can never exceed 100%." (from energy efficiency page)

or

(from exergy efficiency page)


Should water efficiency bsomething like:

-- Sholto Maud (talk 07:35 16 May 2007 (UTC)