Comments on “Temperature-heat diagram analysis method for heat recovery physical adsorption refrigeration cycle - Taking multi-stage cycle as an example”

The purpose of this discussion is to increase the awareness of the divergent views on the entransy concept among the readers of International Journal of Refrigeration. Comments are presented in particular on the paper by Xu et al. where the authors used entransy dissipation in their analysis. Based on the view points of various independent groups of researchers worldwide, I draw the attention of readers to the reality that entransy has no physical meaning.