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UID:pretalx-amfc2026-X8DEBQ@modelica.simtek.cc
DTSTART;TZID=CST:20260921T162500
DTEND;TZID=CST:20260921T165000
DESCRIPTION:Based on cascade energy utilization\, a hightemperature gas-coo
 led reactor (HTGR) combined cycle offers an efficient energy conversion sc
 heme\, but its complex system configuration\, strong parameter coupling\, 
 and dynamic response mechanisms require systematic analysis. In this paper
 \, a dynamic model of an HTGR combined cycle system is developed in Modeli
 ca and validated by comparison with reference results. A negative reactivi
 ty disturbance of -300 pcm is then introduced to investigate the system tr
 ansient response\, with further comparison between constant-pressure and s
 liding-pressure operation. The results show that the steam generator heat-
 transfer rate decreases by 10.8% under sliding-pressure operation\, less t
 han the 15.1% decrease under constant-pressure operation\, indicating bett
 er heat-transfer matching. However\, steam turbine power decreases by 15.8
 %\, compared with 3.8% under constant-pressure operation. Therefore\, cons
 tantpressure operation is more suitable for maintaining main steam pressur
 e and steam turbine power\, whereas sliding-pressure operation is more app
 ropriate for partial-load heat-transfer matching and load following.
DTSTAMP:20261004T074047Z
LOCATION:Energy (R2002)
SUMMARY:Modelica-Based Dynamic Analysis of an HTGR Combined Cycle System un
 der Negative Reactivity Disturbance: Comparison of Constant-Pressure and S
 liding-Pressure Operation - Haojie Qu\, Ming Ding
URL:https://modelica.simtek.cc/amfc2026/talk/X8DEBQ/
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