  We investigate the heat properties of AdS Black Holes in higher dimensions.
We consider the study of the corresponding thermodynamical properties including
the heat capacity explored in the determination of the black hole stability. In
particular, we compute the heat latent. To overcome the instability problem,
the Maxwell construction, in the (T,S)-plane, is elaborated. This method is
used to modify the the Hawking-Page phase structure by removing the negative
heat capacity regions. Then, we discuss the thermodynamic cycle and the heat
engines using the way based on the extraction of the work from a black hole
solution.
