Abstract The half-cycle time effect on the performance of a solar single-stage dual-bed adsorption chiller, in Athens, Greece, in July, is investigated. The adsorption chiller coupled with the solar system is simulated, in real time, during the day for a) constant and b) adjusted half-cycle times and the system performance is monitored. In the former case, the half-cycle time is fixed, while in the latter one is dynamically adjusted according to the varying solar radiation intensity. Using a wide range of constant half-cycle times it is found that the maximum daily cooling capacity is obtained at some constant half-cycle time, which is larger than the optimum one of a single adsorption cycle. Similarly, using a wide range of adjusted half-cycle times, the one, providing the maximum cooling capacity is defined. The analysis is performed in a systematic manner through a proposed algebraic expression. It is found that the dynamically optimized adjusted half-cycle time operation mode provides about 12% higher daily and monthly cooling capacities than the corresponding maximum constant ones. This significant increase has been also confirmed for various incident solar radiation intensities.

中文翻译：

---

通过动态调整半周期时间优化太阳能吸附式冷水机组的性能

摘要 7 月在希腊雅典，研究了半周期时间对太阳能单级双床吸附式制冷机性能的影响。与太阳能系统耦合的吸附式制冷机在白天实时模拟，a) 恒定和 b) 调整半周期时间，并监控系统性能。在前一种情况下，半周期时间是固定的，而在后一种情况下，半周期时间是根据太阳辐射强度的变化动态调整的。使用大范围的恒定半循环时间，发现在某个恒定半循环时间获得最大日冷却能力，该半循环时间大于单个吸附循环的最佳时间。类似地，使用大范围的调整半循环时间，定义提供最大冷却能力的半循环时间。分析是通过建议的代数表达式以系统的方式进行的。发现动态优化的调整半周期时间运行模式比相应的最大恒定运行模式提供了约 12% 的日和月冷却能力。各种入射太阳辐射强度也证实了这种显着增加。