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Question:
“Magnesium Bunmeiron (Magnesium Civilization)” describes that equipment and running cost of “Pegasus desalination device” is much lower than other methods such as reverse osmotic membrane.
However, a practical desalination plant will be much bigger than a pilot machine. Can it put out the assumed performance with the practical plant, even if you can get a good result with the pilot machine?

Answer:
Our plant consists of group of small devices.
In utilizing sunlight, the small device is optimal. This is because the volume is proportional to the 3rd power of length and the surface area to the square of the length and hence the ratio of surface area to the volume is larger for shorter length. Therefore we had better use number of small devices in order to effectively use the solar energy.
Thus any kind of huge plant uses the small device of the same size but uses huge number of devices. You will find a similar image by photovoltaic cells.
(YABE Takashi)

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