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普通中学在开展理化生实验中,需要用到蒸馏水。一般中学不具备蒸馏水器,市售的蒸馏水器耗电量大,电流达数十安培,学校现有线路不能适应,且价格较高,热效率较低。为解决一般中学教学用蒸馏水的供应问题,我们利用离子导电产生热量的原理,制作了一个简易蒸馏水器,经试用,效果很好,现介绍如下。
Ordinary middle schools need to use distilled water to carry out physical and chemical experiments. General secondary schools do not have a distilled water dispenser. Commercially available distilled water appliances consume a large amount of electricity and can reach tens of amperes. The school’s existing lines cannot be adapted, and the prices are high and the thermal efficiency is low. In order to solve the problem of supplying distilled water for general secondary school teaching, we used the principle of ion conduction to generate heat and produced a simple distilled water device. After trials, the effect was very good. Now it is introduced as follows.