Maximum work from two finite heat reservoirs
= Maximum work from two finite heat reservoirs
{title2=$W_{\max}$}
With constant <heat capacities> $C_1,C_2$, a <reversible heat engine> taking two bodies to a common <temperature> has $T_f=T_1^{C_1/(C_1+C_2)}T_2^{C_2/(C_1+C_2)}$. The maximum <work> is $C_1T_1+C_2T_2-(C_1+C_2)T_f$. <heat> isolation does not prohibit transferring <work> to a store included in the total isolated system.