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External structure
The external part of the greenhouse consists of four aluminum covers and [six PVPs] (https://github.com/hsgr/pom/wiki/External-structure#pvps).
Four external aluminum covers open and close during the day and the night respectively in order to help the aeroponic system. The fact that the covers are made of aluminum, which is electrically conductive, means that the outer shell can turn into a faraday cage, operating as a shield, and protecting the solar panels and electronics from damages occurred by solar storms.
The covers are covered internally with aerogel, in order to thermally insulate the greenhouse. The covers externally are painted by special silicon blue NASA paint, to minimize the heat loss during the night.
The six PVPs, when the shell is open, expand around the perimeter of the greenhouse. They use flexible and thin technology with 40% efficiency. According to a more rational model of 25% efficiency at least, lead us to the production of around 6 m^2 x 589 W/m^2 = 3534 W