This paper presents a thermodynamic analysis of a hierarchical gas cycle powered by a high-temperature helium-cooled reactor supplemented by an analysis of the unit cost of electricity generation. Nuclear energy is currently the only emission-free source of energy capable of satisfying the needs of modern civilization. However, despite the low impact of fuel price on the price of electricity and/or heat produced, the efficiency of these facilities should be increased i.a. because of generation of radioactive waste. The second extremely important aspect is safety. Gas reactors provide a level of safety not achievable by water-cooled reactors, primarily because of lower pressures, lack of evaporation (sudden increase in volume), and inactivity of coolant. However, a key aspect of any power technology is the cost-effectiveness of constructing and operating power plants. For this reason the analysis of unit cost of electricity production is performed.

本文介绍了由高温氦冷反应堆提供动力的分级气体循环的热力学分析，并辅以对发电单位成本的分析。核能是目前唯一能够满足现代文明需要的零排放能源。然而，尽管燃料价格对产生的电力和/或热力价格的影响很小，但由于放射性废物的产生，这些设施的效率应该提高。第二个极其重要的方面是安全性。气体反应堆提供了水冷反应堆无法达到的安全水平，主要是因为压力较低、缺乏蒸发（体积突然增加）和冷却剂不活动。然而，任何电力技术的一个关键方面是建设和运营发电厂的成本效益。为此，对电力生产的单位成本进行了分析。