The research results of Wang Ruzhu's team at Shanghai Jiaotong University have achieved large-scale water production in semi-arid areas

Recently, the ITEWA team led by Professor Wang Ruzhu of Shanghai Jiaotong University published a paper in Nature Communications entitled Exceptional water production yield enabled by batch-processed portable water harvester in semi-arid climate.

Development of air water intake devices and optimization of their structure and parameters

The low yield of adsorption air water intake is difficult to carry out large-scale and commercial utilization, mainly due to the limited adsorption capacity of the adsorption material at low humidity, the rough system design and the unoptimized operation mode

Commonly used air water intake operation mode (a) day and night single circulation; (b) continuous; (c) Proposed batch replacement mode

Instead of adopting the common day-night single-cycle (a) and single-adsorbent adsorption-desorption continuous (b) modes of operation, the authors propose a unique batch operation strategy (c): multiple sorbs are simultaneously exposed to high relative humidity at night to absorb water vapor, and then alternately batch during the day to release water to take full advantage of the high relative humidity environment at night while maintaining a high desorption rate

The air water intake device was actually tested in a semi-arid climate (Lanzhou, Gansu, China) with a minimum relative humidity of 15%

Continuous working stability and water intake of air water intake devices under different simulated climatic conditions

Air water intake device performance prediction

To fully assess the potential for water production, the authors selected typical climate regions such as arid, semi-arid and humid climates around the world and conservatively estimated the amount of

Adsorption air water intake technology is a novel technology for obtaining drinking water in low humidity environments that has emerged in recent years, and has important research significance and application value

In recent years, the ITEWA team led by Professor Wang Ruzhu has published more than 30 interdisciplinary papers in Joule, Energy & Environmental Science, Advanced Material, Matter, Nature Communications, Chemical Society Reviews and other journals.

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