of the reference day is the cycle starting point.We note that the duration of each phase depends on the cycle operating conditions, the climatic data and the design considerations. Furthermore, each phase is influenced by the previous phase and the machine components need to be well-matched for a complete cycle.
At the beginning of the cycle, due to the solar radiance, the temperature and the pressure inside the adsorbed increase continuously until they attaint the saturation conditions which correspond to P_c = P_sa (T_c). The saturation pressure remains constant in the adsorber while the temperature continues to increase until it reaches the maximal cycle temperature T_max. Fig. 6(a) presents the