The purpose of the research is to enhance the average cooling capacity during a cycle by a Ilew ( Ψ cle time allocation ． In the study ， the per ∬ ormance of the single stage adsorption refrigeration cycle with the new cycle time allocation was predicted by simulation ． The speci丘c cooling capacity ( SCC ) and the coe 伍 cient of performan ( COP ) were compared with those of the cycle with conventiollal cycle time allocation ．The optimization of the cycle time was performed using the particle swarm optimization ． The optimum cycle time Qfthe new cycle time allocation at each hot water temperature was obtained and it was compared with the optimum performance by the conventional cycle time allocation ． The results showed that the new cycle time allocation would improve the SCC of the single stage adsorption cycle due to the prolonged adsorption time ， Key Wor 〔 誌： Adsorption dhillers ， Cycle time ， Optimization ， Speei 丘c cooling capacity

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