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为降低核电站的电能成本,在热工设计方面需要解决一系列问题,归纳起来为两方面:稳态和动态工况的热工水力问题。这里集中讨论稳态工况下的几个问题。一、关于MDNBR与to,max的合理匹配压水反应堆中MDNBR与to,max都有限制值,一般认为,这两个限制值同时接近各自的限制值(而又不超过)时匹配最好,可以在保证安全的要求下最充分挖掘经济潜力。通过计算分析表明,在新堆稳态最大计算热功率下,要使这两个设计值同时达到限制值,需要进行多方案的计算,计算中往往先遇到MDNBR,然后才是to,max限制值。因此,
In order to reduce the electricity cost of nuclear power plants, a series of problems need to be solved in thermal design, which can be summed up in two aspects: thermal and hydraulic problems in steady-state and dynamic conditions. Here to focus on a few steady-state conditions. A reasonable match between MDNBR and to, max The MDNBR and to, max in pressurized water reactors have a limit value. It is generally believed that the two limit values are close to their respective limit values (but not exceed) The economic potential can be tapped to the fullest on the requirements of ensuring safety. The calculation and analysis show that under the maximum thermal power of new heap steady state, if the two design values reach the limit value at the same time, multiple schemes need to be calculated, MDNBR is often encountered in the calculation, and then the to and max limits value. therefore,