In this article, we calculate the heat flux passing through the horizon $. { \bf TS}|_{ r_h}$ and the difference of energy between the Einstein and M{ \o}ller prescription within the region ${ \cal M}$, in which is the region between outer horizon ${ \cal H}_+$ and inner horizon ${ \cal H}_-$, for the modified GHS solution, KLOPP solution and CLH solution. The formula . E_{ \rm Einstein}|_{ \cal M} = . E_{ \rm M{ \o}ller}|_{ \cal M} - \sum_{ \partial { \cal M}} { \bf TS}$ is obeyed for the mGHS solution and the KLOPP solution, but not for the CLH solution. Also, we suggest a RN-like stringy dyonic black hole solution, which comes from the KLOPP solution under a dual transformation, and its thermodynamical properties are the same as the KLOPP solution.
Categories: gr-qc