The moment of silence at that baseball game was for a united states army ranger , pat tillman , who had been killed in the hills of afghanistan that very day . he was from arizona . he was a graduate of asu , with a 3 . 86 grade point average 那一刻静默是为著当天一位在阿富汗遇害的士兵，他来自亚利桑那，是亚利桑那大学的毕业生，他的平均积点有3 . 86 ，以优等成绩毕业。
In this article , the law of power consumption by the asu , the factors affecting the consumption and the dynamical characteristics of the asu will be profoundly discussed by means of theoretical study and simulation as well 本文以igcc电站的空分系统为研究对象，依靠理论研究和仿真建模相结合为手段，对空分系统的能耗规律、能耗影响因素及其动态响应都做了较为深入的研究。
Besides , the dynamical characteristics of the asu also have great influence on those of the overall igcc plant . it ' s long start - up time and off - design regulation time have great restriction on flexibility and reliability of the overall plant 另外，空分系统的动态特性对igcc电站的动态特性也有很大的影响，其启动时间长，工况调整时间也很长，在很大程度上影响了整个电站的运行灵活性和可靠性。
In the second place , based on the asu of buggenum igcc plant in netherlands , both static and dynamical model for distillation tower of the asu are created and some valuable conclusions are gained as well . finally , a compartmental simplified model is created for distillation tower of the asu , in order to reduce the simulation time and increase the simulation efficiency . the new model will be helpful to the further simulation and on - line optimal control for the asu of the igcc plant 其次，本文以荷兰buggenum电站的空分系统为原型，基于matlab建立了空分系统精馏塔的半图形化动、静态数学模型，并通过模拟，得出了一些有价值的结论：当空分系统的压力变化时，氧气产品浓度的响应时间常数为两小时左右，说明空分系统是igcc电站最大延迟环节；而且虽然氧气浓度最后会稳定在igcc电站所要求的范围之内，但在过渡过程中会超出限制，这些都为igcc电站的安全运行及控制系统设计提供了有价值的信息。
In the first place , with the comparison among several sorts of configurations between the asu and gas turbine , ep - asu is theoretically proved to have better overall igcc power output , overall efficiency and net cost of power generation than lp - asu . furthermore , the pressure ratio of the asu and the temperature diffenrence of the main reboiler / condencer are found to be the two key factors which affect the power consumption by the asu 具体来说，本文首先通过对空分系统与燃气轮机配置方案的深入研究和对比，从理论上说明了ep - asu与lp - asu相比能耗更低、投资更省、效率更高；并进一步得出空分压比和空分系统的主冷温差是影响空分系统能耗的关键性因素。
Asu , especially the configuration between the asu and gas turbine has great impact , which concentrates on the power consumption by the asu , on the igcc power output , overall efficiency and the net cost of power generation of the igcc plant . therefore , it is significant to make a study on the relationship between the asu and gas turbine and the factors which influence the power consumption by the asu 空分系统的选择，特别是空分系统与燃气轮机的配置关系，对igcc电站的供电效率、功率输出及净发电成本都有很大的影响；而这些影响，集中表现在空分系统的能耗之上，因此研究空分系统配置与能耗的关系以及空分系统的能耗规律及其影响因素至关重要。
