B103 Performance Improvement of Adsorption Chillers by the Optimization of Adsorption and Desorption Time

Abstract

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

Design and Performance of an Innovative Four-Bed, Three-Stage Adsorption Cycle

“…The simulation program developed for the proposed four-bed three-stage adsorption cycle was operated by adopting the basic input parameters and standard working conditions as presented in Table 2 [23]. The cycle time, operating time of each mode (i.e., τ 1 and τ 2 ), is one of the most important parameters of the system and effectively influences the overall performance.…”

“…Recently, experimental study on a two-stage adsorption freezing machine driven by a low temperature heat source was done by Wang et al [21]. However, the coefficient of performance (COP) of a two-stage adsorption cycle was found to be lower than that of the advanced single-stage chillers [22,23].…”

Innovative Design and Performance of Three-Bed Two-Stage Adsorption Cycle under Optimized Cycle Time

“…The simulation program developed for three-bed two-stage adsorption cycle was operated by adopting the basic input parameters and standard working conditions as presented in Table 2 (31) . The cycle time means operation time of each mode (i.e., τ 1 and τ 2 ) and it is one of the most important parameters of the system and influences the overall performance.…”

“…The optimal performance of the proposed cycle was compared with optimal performance of the former four-bed two-stage cycle (31) as shown in Fig. 11.…”