With the development of industrialization,water pollution is becoming more and more serious,fresh water supplying is becoming more and more inadequate.Some specialists have already researched the methods and developed new equipments which can extract water from air,but considering the large size and weight, the equipments were not convenient carry for field drinking by people.To overcome the shortcomings, the portable photoelectric water extraction device from air is studied, it consists of four parts,there are solar energy supply system, control system, refrigeration system and purification system.The device adapts the advanced method by the solar energy refrigeration to dew, it has four folding solar panels to get the energy and two shells which size could be changed along a slider and fixed by pins.Therefore, the new device has some advantages such as high refrigeration coefficient, high water intake rate, continuous operation long time without sunshine and excellent portability.
Sustainable energy generation is becoming increasingly important. Our oceans are largely an untapped source of energy. This paper presents an innovative design method for converting the linear motion of ocean waves into electricity energy. The design principle and the construction details have been presented.
The digital imaging technology based on underwater laser line-scanning is one of the developing and effective technologies for underwater electro-optical imaging. According to the requirements of ocean salvages, rescues and marine resources explorations, the technical features of the digital imaging system are analyzed comprehensively, the structural characteristics are discussed and the hardware components are introduced. The design gives the supports to develop the digital imaging system using underwater laser line-scanning technology and has great significance for application.
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