<P> Energy conversion efficiency ( η ) is the ratio between the useful output of an energy conversion machine and the input , in energy terms . The input , as well as the useful output may be chemical , electric power , mechanical work , light ( radiation ) , or heat . </P>
<P> Energy conversion efficiency ( η ) is the ratio between the useful output of an energy conversion machine and the input , in energy terms . The input , as well as the useful output may be chemical , electric power , mechanical work , light ( radiation ) , or heat . </P>
ratio of useful energy to total input energy
ratio of useful energy to total input energy
Energy conversion efficiency ( η )
Energy conversion efficiency ( η )