The core working principle of the semiconductor refrigeration-based atmospheric water generator is to cool ambient air and liquefy the water vapor contained in the air into fine droplets, so as to realize the acquisition of fresh water. Ubiquitous moist air on the earth serves as the water source for atmospheric water harvesting, which is easily accessible and can be directly processed into fresh water. Compared with other water intake equipment, the atmospheric water generator requires no complex auxiliary devices. Featuring a compact structure and a small number of moving parts, it is convenient to be transported manually or by vehicle at any time. Therefore, atmospheric water harvesting is a preferred solution for distributed water intake systems.

Different from large-scale seawater desalination projects, the water generator based on atmospheric water harvesting is more applicable to field scientific expeditions, camp outposts and field troops, and can meet the water demand in arid, semi-arid and island regions.

Structure and Working Principle of Semiconductor Refrigeration-based Atmospheric Water Generator

The system of the semiconductor refrigeration-based atmospheric water generator consists of an air pump, temperature and humidity sensors, a condensation chamber, a water collector and a water circulation device. The water collector is internally equipped with a laser module, a water depth sensor and other components.

The air pump at the air inlet delivers ambient air into the condensation chamber, which is connected to semiconductor thermoelectric cooling chips. The chips continuously supply cooling capacity to the condensation chamber to reduce its internal temperature. The air entering the chamber comes into contact with the cold-end fins inside, triggering heat and moisture exchange between the moist air and the cold fins.

Since the temperature of the moist air is higher than that of the cold-end fins of the thermoelectric cooling chips, heat is transferred from the moist air to the fins through convective heat transfer, which gradually cools down the moist air. When the temperature of the moist air drops to the dew point corresponding to its relative humidity, the gaseous water vapor in the air will gradually condense into liquid water and precipitate, adhering to the fin surfaces to form fine droplets. As the droplets grow larger, their gravity exceeds the adhesive force provided by the fins, causing the droplets to drip down and be collected by the water tank arranged beneath the fins.

Adopting the Peltier effect of semiconductors to realize refrigeration and dew condensation for moisture extraction from humid air, this device has the advantages of simple operation, low power consumption, resource conservation and zero pollution. It provides an innovative method for fresh water acquisition in special environments.

Founded in 2015, Huajing Co., Ltd. is a technology-oriented innovative enterprise integrating the research and development, production, sales and service of temperature control equipment.

The company focuses on three core business segments: 1. Semiconductor refrigeration technology; 2. Vapor compression refrigeration technology; 3. Application technology of flexible heat-conducting electrothermal films.

We provide integrated technical solutions including 3D structural design, CAE thermal simulation analysis, and supporting electronic hardware and software development. Our products are widely applied in multiple industries such as consumer electronics, medical aesthetics and industrial communication.

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