Abstract Conventional operation strategy of silica gel-water adsorption chiller in solar cooling application uses fixed cycle time, but it deviates from real optimal cycle time because of varied solar hot water temperature. Mathematical model and simulation of a solar silica gel-water adsorption chiller was done and performance comparison in two operating strategies (fixed and varied cycle time) was made according to experiment data of a real solar system. An estimating equation for the optimal cycle time was developed by the simulation results, considering both COP and SCP by a weighting factor. Correlation of optimal cycle time and hot water temperature was fitted in a linear equation. Optimal half cycle time decreased with increasing hot water temperature and weighting factor. COPs of varied cycle time were much larger than those of fixed cycle time whereas SCPs of varied cycle time and fixed cycle time were nearly the same. So operation strategy of silica gel-water adsorption chiller with varied cycle time can significantly improve the whole utilization efficiency of solar cooling system without any decrease in cooling capacity.

中文翻译：

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硅胶-水吸附式冷水机在太阳能制冷应用中的运行策略研究

摘要 太阳能制冷应用中硅胶-水吸附式冷水机组的常规运行策略采用固定循环时间，但由于太阳能热水温度的变化而偏离了真正的最佳循环时间。根据真实太阳系的实验数据，对太阳能硅胶-水吸附式冷水机组进行数学模型和仿真，对两种运行策略（固定循环时间和可变循环时间）的性能进行了比较。最佳循环时间的估计方程是根据模拟结果开发的，通过加权因子同时考虑 COP 和 SCP。最佳循环时间和热水温度的相关性拟合为线性方程。最佳半循环时间随着热水温度和加权因子的增加而减少。不同周期时间的 COP 远大于固定周期时间的 COP，而不同周期时间和固定周期时间的 SCP 几乎相同。因此，硅胶-水吸附式冷水机组不同周期的运行策略可以显着提高太阳能冷却系统的整体利用效率，而不会降低制冷量。