这些能量被用来加热盐水，使其局部蒸发，然后将所产生的水蒸气凝结下来。
The energy is used to heat the brine, partially evaporating it, and to condense the resulting water vapour.
这种充电方法也有局限，因为充电过程依赖于液体凝结，需要一个潮湿的环境，且局部温度要低于环境温度才行，如山洞或者河流。
There are some constraints: Because the process relies on condensation, it requires a humid environment, as well as a source of temperatures colder than the surrounding air, such as a cave or river.
同时，由于活泼气体(如氧气)的存在以及气泡凝结时产生的局部高温，导致金属表面发生电化学腐蚀。
At the same time, due to active gases (such as oxygen), as well as the presence of air bubbles generated when the local condensation heat, resulting in electrochemical corrosion of metal surface.
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