| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology for generating steam having a stable steam quality and an excellent response to load changes. <P>SOLUTION: In a first steam generator, flow rates Y1 and Y2 of combustion fuel supplied to a vapor phase of a heat exchanger are feedback-controlled based on steam temperature Tm, while the flow rate Y3 of combustion fuel supplied to a liquid phase is feedback-controlled based on steam flow rate Fm. The two types of feedback controls are carried out independently from each other. A second steam generator is controlled based on the steam temperature Tm, calculated as a weighted average of a plurality of local steam temperatures measured at points near the outlets of a plurality of small channels wherein the steam flows. <P>COPYRIGHT: (C)2003,JPO |
