安全经济高效的先进能源

具有第四代安全经济特性的核电应该是人们期待的先进的清洁低碳能源。高温气冷堆是当今研发的第四代核电堆型之一,但现有的设计还存在需要排除的严重的安全隐患。堆芯不熔化,不等于说不会有严重事故发生。需要吸取国外球床高温堆和柱状高温堆两种实验堆型运行的经验教训、扩展安全观念和应对安全低概率事件,确保反应堆不出现后果极其严重的放射性释放事故。当热电转换系统采用与燃气蒸汽联合循环耦合应用的技术以后,会发挥高温堆所长,更大地提升转换效率,形成一种高安全低投资和高效率的双燃料清洁能源,可用于大堆或小堆的应用环境,可满足电力系统基本负荷和调锋负荷的需要。在工程设计上采取一系列改进和创新措施,包括釆用规则床模块化及地下反应堆设计以后,可在提高反应堆核心部位安全防卫能力的同时,防范低概率事件,成为一种新的安全经济高效的先进能源。

Advanced energy with safety,economy and high efficiency

The fourth generation of nuclear power is expected to generate advanced, clean and low carbon energy. The High Temperature Gas-cooled Reactor (HTGR) is the new generation of nuclear power with new safety feature, but there are still potential safety issues that must be addressed in the existing HTGR design. In the event where reactor core meltdown prevented, other serious safety issues could cause serious radioactivity release accidents. It is imperative to rethink "safety conception" to address low probability events and learn from the experiences made in the earlier models of pebble bed reactor and prismatic reactor in the new type HTGR design.In addition, HTGR reactor could be coupled with conventional natural gas combined cycle and forms a nuclear-natural gas coupled cycle, it will provide an energy system with low investment and high cycle efficiency. Using nuclear heat and natural gas, this system can be used for base-load and peak power production. When the ordered bed modular HTGR is placed under ground, it can improve defense capabilities, prevents low probability events and becomes a new energy source that offers safety, economy and high efficiency.