Dynamic exergy analysis of feed water heater in nuclear power plant during start-up process

被引：0
|
作者：
Zhang, Zhijiang [1 ]
Tian, Zhaofei [1 ]
Ma, Xiaoyu [1 ]
机构：
[1] Harbin Engn Univ, Fundamental Sci Nucl Safety & Simulat Technol Lab, Harbin 150001, Peoples R China
来源：
ENERGY | 2024年 / 292卷
关键词：
Feed water heater; Start-up process; Modeling and simulation; Dynamic exergy analysis; Exergy efficiency; Exergy destruction; EXCHANGER; GENERATION; EFFICIENCY; OPERATION; SYSTEMS; UNIT;
D O I：
10.1016/j.energy.2024.130499
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In order to study the thermal economy of the feed water heater (FWH) start-up process (SUP), a dynamic mechanism model has been established, and the dynamic exergy analysis was conducted using this model. The effects of step and continuous changes in extraction steam flow on the exergy characteristics of the SUP were investigated. For the step change study, the step amplitude of extraction steam flow increased from 12.5 % to 100 % and the effects on the exergy characteristics were analyzed. To study the effects of the continuous change in extraction steam flow, the exergy was characterized and analyzed with three types changes: the quick opening, the linear and the equal percentage. The dynamic characteristics of the exergy parameters during the SUP of the FWH were then clearly defined. The highest steady-state exergy efficiency (95.72 %) was achieved for the FWH when the step amplitude was at 50 %. The more optimal start-up method should have the equal percentage extraction steam flow change characteristics with the highest process average exergy efficiency (94.07 %) and the lowest accumulated exergy destruction (21.339 GJ). This study could provide important guiding significance for the SUP of the FWH.
引用
收藏
页数：14
相关论文
共 50 条
  • [21] Identification and analysis of current signal characteristics of nuclear power pump units based on start-up process
    Wang, Xiuli
    Yang, Shenpeng
    Zhi, Yifan
    Xia, Qichao
    Xu, Wei
    Zhao, Yuanyuan
    NUCLEAR ENGINEERING AND DESIGN, 2025, 436
  • [22] CORROSION OF STRUCTURAL MATERIALS DURING START-UP OF NUCLEAR POWER STATIONS.
    Sedov, V.M.
    Krutikov, P.G.
    Nemirov, N.V.
    Protection of Metals (English translation of Zaschita Metallov), 1981, 17 (01): : 88 - 90
  • [23] Selection and Experimental Research of the Passive Start-Up Neutron Detector in Nuclear Power Plant
    Jiang, Tianzhi
    Li, Biao
    Zhang, Yun
    Wang, Yinli
    Li, Wenping
    Huang, Youjun
    Shen, Feng
    Sun, Congjian
    Hedongli Gongcheng/Nuclear Power Engineering, 2022, 43 (03): : 139 - 143
  • [24] Analysis of start-up process and implementation of start-up protection of a large synchronous condenser
    Li Z.
    Wu C.
    Wan L.
    Pan S.
    Wang H.
    Li W.
    Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control, 2020, 48 (20): : 148 - 154
  • [25] Shell OMEGA process plant start-up successful
    不详
    CHEMISTRY WORLD, 2008, 5 (07): : 15 - 15
  • [26] Exergy Study of Sour Water Stripper Unit of Delayed Coker Unit in a Refinery plant: A Real Start-Up Plant
    Ibrahim, Ahmed Y.
    Ashour, Fatma H.
    Gadalla, Mamdouh A.
    EGYPTIAN JOURNAL OF CHEMISTRY, 2021, 64 (09): : 4821 - +
  • [27] Implementation of nuclear power plant simulation in start-up commissioning of reactor control system
    China Nuclear Power Engineering Co. Ltd., Shenzhen, Guangdong, 518124, China
    不详
    Hedongli Gongcheng, 2009, SUPPL. 2 (49-53+59):
  • [28] Successful start-up for pilot hydrogen power plant
    不详
    TCE, 2005, (765): : 5 - 5
  • [29] 11 CHECKPOINTS FOR POWER-PLANT START-UP
    RICHARDSON, DC
    POWER ENGINEERING, 1983, 87 (11) : 52 - 54
  • [30] Modeling of transient states in the start-up path during voltage and start-up power application
    Grzadzielski, Ireneusz
    Olejnik, Bartosz
    Zakrzewski, Mikolaj
    ARCHIVES OF ELECTRICAL ENGINEERING, 2019, 68 (04) : 749 - 769
12345