| 摘要 |
A solar thermal system, comprising a solar pond (10) for accumulating salt water heated by solar radiation and a moisture supply device (20) allowing the vapor evaporated from the water having impurities such as sea water to be absorbed by the salt water; a method of maintaining the solar pond; and a method of forming the solar pond; the system, wherein the moisture supply device may have an absorbing heat pump for receiving the supply of the salt water and the water having the impurities, and the salt water with excellent cleanliness is circulated to the solar pond by the operation of the moisture supply device, whereby scale deposit and propagation of algae in the solar pond can be prevented.
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