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为了帮助世界上的缺水地区,科学家正在努力寻找海水淡化的新方法。虽然脱去水里的盐是个简单的过程,但实际上要想廉价和方便地做到这一点是困难的。1985年2月底,日本海水利用促进中心实验室将完成为期5年的使用液化天然气除去海水中盐的实验。这个过程的物理原理很简单:当海水冻结时,盐就会从中分离出来。这时,用-161℃的液化天然气直接加在盛有海水的容器中,由于水温相对较高,使冷冻的液化天
To help the world’s water-scarce regions, scientists are trying to find new ways to desalinate water. Although removing salt from the water is a simple process, it is actually difficult to do it cheaply and conveniently. At the end of February 1985, Japan’s Laboratory for Seawater Utilization Promotion Center will complete a five-year experiment to remove salt from seawater using liquefied natural gas. The physical principle of this process is simple: When the seawater is frozen, the salt is separated. At this moment, the liquefied natural gas at -161 ° C is added directly to the container with seawater. Due to the relatively high water temperature, the frozen liquefied natural gas