Letter to the editor on “Temperature-heat diagram analysis method for heat recovery physical adsorption refrigeration cycle-Taking multi stage cycle as an example” by S. Z. Xu et al., vol. 74, 2017, pp. 254-268

- The temperature-heat graphic method is due to Adrian Bejan.
- Entransy (the 'analogy' between heat and work storage) violates the laws of thermodynamics.
- Nationalism in the guise of scholarship should be discouraged.