What is a nuclear reactor?(核反应堆是什么)
[来源于https://whatisnuclear.com/] A nuclear reactor is a system that contains and controls sustained nuclear chain reactions. Reactors are used for generating electricity,moving aircraft carriers and submarines,producing medical isotopes for imaging and cancer treatment,and for conducting research.
Main components (1) The core of the reactor contains all of the nuclear fuel and generates all of the heat. It contains low-enriched uranium (<5% U-235),control systems,and structural materials. The core can contain hundreds of thousands of individual fuel pins. Animated reactor system
The image above (reproduced from the NRC) shows a nuclear reactor heating up water and spinning a generator to produce electricity. It captures the essence of the system well. The water coming into the condenser and then going right back out would be water from a river,lake,or ocean. It goes out the cooling towers. As you can see,this water does not go near the radioactivity,which is in the reactor vessel.
全堆芯的一个实例:
This is a full core,made up of several hundred assemblies. Some assemblies are control assemblies. Various fuel assemblies around the core have different fuel in them. They vary in enrichment and age,among other parameters. The assemblies may also vary with height,with different enrichments at the top of the core from those at the bottom. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |