- Longer periods without sun reduce the systems’ efficiency drastically. Therefore, the polar regions are unfavorable to the implementation of such a system. Luckily, those regions currently don’t suffer much from drought and electricity needs.
- The produced water is pure and is therefore unsuitable for direct consumption.
Setting it up
In order to tackle the first limitation stated above, the system needs a starting phase during which its efficiency is progressively increased. Once the expected operating speed is reached, the system operates continuously with only slight variations in efficiency as a function of the local atmospheric conditions and the alternation day-night.
It is even possible to further increase the systems’ efficiency and stability: By using part of the water produced to restore natural hydrographic systems in the surrounding area, the environment near the system will be covered with vegetation and the moisture of the area will increase as the area extends. This enables for a larger quantity of water to be extracted.
Water in the soil
Competition & existing market
There have already been many passive and active system attempts to extract water from the air. Both have been proven to function, but currently have drawbacks that makes them non-sustainable for our purpose:
- Existing active systems have a low production and the energy cost to pay for electricity is high. Moreover, many regions remain totally isolated from any (clean) electricity source.
- Existing passive systems are currently only able to extract a small amount of water and any pollution present in the air is found in the water. These passive systems are also highly dependent on atmospheric conditions, making them poor candidates for daily production capable of supplying large human facilities.
It is therefore necessary to rapidly develop a technology that allows the construction of plants ranging from small local production to the domestic scale up to an industrial production capable of supplying cities.