Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Energy conversion efficiency
open-in-new
<p>Energy conversion efficiency (<i>η</i>) is the <a href="/facts/Ratio/mFmhQt7T">ratio</a> between the useful output of an <a href="/facts/Energy_conversion_machine/8g4seWcj">energy conversion machine</a> and the input, in <a href="/facts/Energy/wd8PrQM7">energy</a> terms. The input, as well as the useful output may be <a href="/facts/Chemical/EWcXU41d">chemical</a>, <a href="/facts/Electric_power/w61ID9yQ">electric power</a>, <a href="/facts/Mechanical_work/mbclFPBs">mechanical work</a>, <a href="/facts/Light/jeofpMn4">light</a> (radiation), or <a href="/facts/Heat/FjDGssCs">heat</a>. The resulting value, <i>η</i> (eta), ranges between 0 and 1. </p>