decay heat

简明释义

衰变热

英英释义

例句

1.Failure to manage decay heat (衰变热) can lead to overheating and potential reactor damage.

未能管理衰变热（衰变热）可能导致过热和潜在的反应堆损坏。

2.The nuclear reactor must be designed to safely remove decay heat (衰变热) after the fission process stops.

核反应堆必须设计得能够安全地去除衰变热（衰变热）在裂变过程停止后。

3.After a reactor is shut down, decay heat (衰变热) continues to be produced for a significant amount of time.

在反应堆关闭后，衰变热（衰变热）仍会持续产生相当长的时间。

4.Engineers monitor decay heat (衰变热) levels to ensure the reactor core remains cool.

工程师监测衰变热（衰变热）水平，以确保反应堆核心保持冷却。

5.The cooling system must be capable of handling decay heat (衰变热) for several days post-shutdown.

冷却系统必须能够处理停机后几天内的衰变热（衰变热）。

作文

Decay heat, or 衰变热, is a term that refers to the residual heat generated by the decay of radioactive materials. This phenomenon is particularly significant in the context of nuclear reactors and radioactive waste management. When a nuclear reactor is shut down, it does not immediately cool to ambient temperature; instead, it continues to produce heat due to the decay of fission products. Understanding 衰变热 is crucial for ensuring the safety and efficiency of nuclear operations.In a nuclear reactor, when uranium or other fissile materials undergo fission, they produce not only energy but also a variety of radioactive isotopes. These isotopes are unstable and will decay over time, releasing energy in the form of heat. This heat, known as 衰变热, can be significant, especially in the first few hours after the reactor has been shut down. For instance, immediately after a reactor is turned off, the amount of 衰变热 produced can be about 6-7% of the thermal power output at full operation. This percentage decreases over time, but it remains a critical factor for several days, and even weeks, following a shutdown.The management of 衰变热 is essential for the safety of nuclear facilities. If the heat generated by the decay is not adequately removed, it can lead to overheating of the reactor core and potentially result in a meltdown. Therefore, nuclear plants are equipped with emergency cooling systems designed to handle this residual heat. These systems must be operational even after the reactor is no longer generating power from fission reactions.Moreover, the concept of 衰变热 extends beyond just the operational phase of a nuclear reactor. It is also a fundamental consideration in the long-term storage of nuclear waste. Radioactive waste contains isotopes that will continue to decay and produce heat for many years. As such, the design of storage facilities must account for the heat generated by these materials. Engineers and scientists must carefully calculate the expected 衰变热 to ensure that containment structures remain safe and effective over time.In addition to its implications for safety, 衰变热 also plays a role in the economics of nuclear power. The costs associated with managing the heat produced after a reactor shuts down can influence the overall cost of electricity production. Efficient cooling systems and proper waste management practices can mitigate some of these costs, making nuclear energy more competitive compared to other sources.In conclusion, 衰变热 is a critical aspect of nuclear science that encompasses both safety and economic considerations. Its understanding is vital for the safe operation of nuclear reactors and the management of radioactive waste. As the world continues to explore sustainable energy solutions, the significance of 衰变热 will likely grow, emphasizing the need for continued research and innovation in this field. By prioritizing the understanding and management of 衰变热, we can work towards a safer and more efficient future in nuclear energy.

衰变热是一个术语，指的是由放射性物质衰变产生的残余热。这一现象在核反应堆和放射性废物管理的背景下尤为重要。当核反应堆关闭时，它并不会立即冷却到环境温度；相反，由于裂变产物的衰变，它继续产生热量。理解衰变热对于确保核能操作的安全性和效率至关重要。在核反应堆中，当铀或其他可裂变材料发生裂变时，它们不仅产生能量，还会产生多种放射性同位素。这些同位素是不稳定的，会随着时间的推移而衰变，释放出以热量形式存在的能量。这个热量被称为衰变热，在反应堆关闭后的头几小时内可能非常显著。例如，在反应堆关闭后立即产生的衰变热量可能约为全功率输出的6-7%。虽然这个百分比会随着时间的推移而减少，但在关闭后的几天甚至几周内，它仍然是一个关键因素。衰变热的管理对于核设施的安全至关重要。如果未能充分去除衰变产生的热量，可能导致反应堆核心过热，并可能导致熔毁。因此，核电厂配备了应急冷却系统，旨在处理这些残余热量。这些系统必须在反应堆不再通过裂变反应产生电力后仍然能够正常运行。此外，衰变热的概念不仅限于核反应堆的运行阶段。它在核废物的长期储存中也是一个基本考虑因素。放射性废物包含的同位素在许多年内将继续衰变并产生热量。因此，储存设施的设计必须考虑这些材料所产生的热量。工程师和科学家必须仔细计算预期的衰变热，以确保封闭结构在长期内保持安全和有效。除了对安全的影响外，衰变热还在核电的经济学中发挥着作用。管理反应堆关闭后产生的热量所需的成本可能会影响电力生产的整体成本。高效的冷却系统和适当的废物管理措施可以缓解部分这些成本，使核能在与其他能源相比时更具竞争力。总之，衰变热是核科学中的一个关键方面，涵盖了安全性和经济性考虑。理解它对核反应堆的安全运行和放射性废物管理至关重要。随着世界继续探索可持续能源解决方案，衰变热的重要性可能会增加，这强调了在这一领域继续研究和创新的必要性。通过优先考虑对衰变热的理解和管理，我们可以朝着核能安全和高效的未来迈进。