Abstract In this paper, a novel hybridization between adsorption desalination cycle and two ejectors is proposed to increase the freshwater productivity by several folds. Silica gel/water is used as a working pair for this integration. The proposed hybrid system, donated as AD2EJ, has two sorption beds, two evaporators, two condensers, and two ejectors. Performance of the hybrid cycle is evaluated numerically in terms of specific daily freshwater production (SDWP) and Coefficient of Performance (COP). Mathematical models of the adsorption desalination cycle and ejectors are validated. The numerical results reveal that the optimal half-cycle time is about 400 s, at which the SDWP of the AD2EJ system is calculated as 23.0 m3 per ton of silica gel at a COP of 1.64 using a regeneration temperature of 85 °C. This amount of freshwater is 3 times higher than that of the basic adsorption desalination system (ADS). Further enhancement is achieved by linking the condenser and evaporator of the AD2EJ cycle via an internal heat recovery circuit. The SDWP of this system (AD2EJ-HR) is found to be 79.4 m3/ton at a COP of 2.22 at a regeneration temperature of 95 °C and 400 s half-cycle time.

中文翻译：

---

一种新型循环吸附式脱盐系统，具有两级喷射器，可提高产水量和效率

摘要 在本文中，提出了吸附脱盐循环和两个喷射器之间的新型混合，以将淡水生产率提高几倍。硅胶/水用作此集成的工作对。提议的混合系统，捐赠为 AD2EJ，有两个吸附床、两个蒸发器、两个冷凝器和两个喷射器。混合循环的性能根据特定的每日淡水产量 (SDWP) 和性能系数 (COP) 进行数值评估。验证了吸附脱盐循环和喷射器的数学模型。数值结果表明，最佳半周期时间约为 400 s，在此时间，AD2EJ 系统的 SDWP 计算为每吨硅胶 23.0 m3，COP 为 1.64，再生温度为 85 °C。这个淡水量是基本吸附脱盐系统（ADS）的3倍。通过内部热回收回路连接 AD2EJ 循环的冷凝器和蒸发器，实现了进一步的增强。发现该系统 (AD2EJ-HR) 的 SDWP 为 79.4 立方米/吨，COP 为 2.22，再生温度为 95 °C，半周期时间为 400 秒。