摘要
在美国电力公司和开发商对高效的超临界机组失去兴趣几十年后,最近他们又开始意识到其市场价值。这是由于燃料价格持续偏高,而超临界机组的运行效率也极具竞争性,并且热效率高,污染物(包括CO_2)排放低。文章从超临界机组的设计、可用率、可靠性、调峰能力及维护特性等各方面说明超临界机组的优越性。最后还讨论了超超临界机组的经济性及材料和研制情况。
After falling out of favor for decades, superefficient supercritical(SC) steam cycles recently have seen their stocks rise among U.S. utilities and developers. Among the reasons for the renewed interest are higher fuel prices, the premium that competition has placed on operating efficiency, and the inverse relationship between thermal efficiency and the production of pollutants including CO2. By analyzing the availiabity, reliability, cyclic duty and maintainability, the paper demonstrates the advantages of SC units. It is concluded with economic and material analysis.
