Atmospheric water harvesting (AWH) is emerging as a promising technique of water production in remote and isolated areas away from natural water resources. The present study describes potential of the AWH from low-humid regions under the climatic conditions of Hail city (27.64° N, 41.75° E) in Saudi Arabia. Trapezoidal prism solar still of 5-shelves is developed, where the shelves are filled with black cotton cloth bed saturated with calcium chloride solution. The solar still is opened during night hours, enabling the descant to absorb humidity from humid air (absorption process) and closed during day hours causing desorption of water under higher temperatures (regeneration process). The vapor condensates on a glass surface and is collected in a bottle. Under low-humid conditions of the Hail city, the desiccant balanced approximately at 48% saturation concentration. The water production of the device reaches 1.06 l/m²day by consuming 22.96 MJ solar energy/l of water with a cost of $0.055 per liter. The present study has demonstrated high potential of the AWH technique from low-humid regions up to 26.5%. The proposed device is standalone with promising performance, which needs neither the natural water resources nor the infrastructure. The device is suitable for remote and isolated small communities.

大气水收集（AWH）作为一种有前途的生产技术正在出现，该技术在远离自然水资源的偏远和偏远地区生产。本研究描述了沙特阿拉伯冰雹城市（北纬27.64°，东经41.75°E）气候条件下低湿地区AWH的潜力。开发了5层梯形棱柱形太阳蒸馏器，其中的架子上充满了用氯化钙溶液饱和的黑色棉布床。太阳蒸馏器在夜间开放，从而使取消扫描仪能够吸收潮湿空气中的湿气（吸收过程），而在白天则关闭，从而导致较高温度下的水解吸（再生过程）。蒸气在玻璃表面上凝结并收集在瓶子中。在雹市的低湿条件下，干燥剂在约48％的饱和浓度下达到平衡。设备的产水量达到1.06 l / m²天，每升水消耗22.96 MJ太阳能，每升成本为0.055美元。本研究表明，从低湿地区到高达26.5％的AWH技术具有很高的潜力。拟议中的设备是独立的，具有令人鼓舞的性能，既不需要自然水资源，也不需要基础设施。该设备适用于偏远和孤立的小型社区。