发电技术 ›› 2024, Vol. 45 ›› Issue (1): 79-89.DOI: 10.12096/j.2096-4528.pgt.22094

• 发电及环境保护 • 上一篇    下一篇

气侧均流装置对冷却三角单元流动传热特性影响的实验研究

郭滔1, 于海洋1, 冯海波2, 袁汉川2, 田兵1, 杨玉杰3, 赵元宾4, 赵倩4   

  1. 1.国能浙能宁东发电有限公司,宁夏回族自治区 银川市 750408
    2.国能沪电(上海)工程技术有限公司,上海市 普陀区 200062
    3.济南蓝辰能源技术有限公司,山东省 济南市 250101
    4.山东大学能源与动力工程学院,山东省 济南市 250061
  • 收稿日期:2023-09-13 出版日期:2024-02-29 发布日期:2024-02-29
  • 通讯作者: 赵元宾
  • 作者简介:郭滔(1974),男,高级工程师,主要研究方向为热能与动力工程,12080127@chnenergy.com.cn
    于海洋(1971),男,硕士,高级工程师,主要研究方向为电厂安全管理与节能管理,12875667@ceic.com
    冯海波(1979),男,工程师,从事火电厂节能减排降耗工作,haibo.feng.f@ceic.com
    袁汉川(1981),男,硕士,工程师,从事火电厂节能减排降耗工作,hanchuan.yuan@ceic.com
    田兵(1993),男,工程师,主要研究方向为火电厂汽轮机本体及其附属系统检修技术,409258223@qq.com
    杨玉杰(1978),女,工程师,主要研究方向为节能节水技术管理,18653183092@163.com
    赵元宾(1981),男,博士,副教授,主要研究方向为高效能量转换及节能技术,本文通信作者,zhyb@sdu.edu.cn
  • 基金资助:
    国家自然科学基金项目(51606112);山东省科技型中小企业创新能力提升工程(2022TSGC1026);国家能源集团宁夏电力有限公司科技创新项目(NXDL-2022-28)

Experimental Study on the Influence of Air Side Equalizing Device on the Flow Heat Transfer Characteristics of Cooling Delta Unit

Tao GUO1, Haiyang YU1, Haibo FENG2, Hanchuan YUAN2, Bing TIAN1, Yujie YANG3, Yuanbin ZHAO4, Qian ZHAO4   

  1. 1.Guodian Zheneng Ningdong Power Generation Co. , Ltd. , Yinchuan 750408, Ningxia Hui Autonomous Region, China
    2.CHN Energy Shanghai Engineering & Technology Co. , Ltd. , Putuo District, Shanghai 200062, China
    3.Jinan Lanchen Energy Technology Co. , Ltd. , Jinan 250101, Shandong Province, China
    4.School of Energy and Power Engineering, Shandong University, Jinan 250061, Shandong Province, China
  • Received:2023-09-13 Published:2024-02-29 Online:2024-02-29
  • Contact: Yuanbin ZHAO
  • Supported by:
    the National Natural Science Foundation of China(51606112);Science and Technology Innovation Capability Improvement Project of Medium-Sized Enterprises in Shandong Province(2022TSGC1026);Sci-Tech Innovation Project of China Energy Ningxia Power Electric Co., Ltd(NXDL-2022-28)

摘要:

对于间接空冷系统冷端基本传热元件-冷却三角单元,通过在其加装及相邻未加装气侧均流装置冷却三角单元内的两侧冷却柱沿散热管束横向布置风速、风温、壁温测点,进一步在左右两侧出水柱布置壁温测点,对比分析两侧冷却柱沿散热管束横向迎风风速、风温、壁温及出水壁温的变化规律,研究气侧均流装置对冷却三角单元流动传热特性及出水壁温分布的影响机制。研究结果表明:加装气侧均流装置后冷却三角单元两侧冷却柱沿散热管束横向迎风风温、壁温分布更加均匀,两侧出水柱壁温均值更低,且降低了两侧出水柱壁温差,气侧均流装置优化了两侧冷却柱的换热均匀性。

关键词: 煤电机组, 间接空冷系统, 冷却三角单元, 气侧均流装置, 流动传热, 水温分布

Abstract:

For the cooling delta unit, the basic heat transfer element of the cold end of the indirect air-cooling system, the wind speed, air temperature, and wall temperature measuring points were arranged laterally along the heat transfer bundle in the cooling columns on both sides of cooling delta with or without air equalizing apparatus. The wall temperature measuring points were further arranged on the left and right side of water outlet cooling columns. The changes of lateral windward wind speed, wind temperature, wall temperature and outlet water temperature of the cooling columns on both sides along the heat transfer bundles were compared and analyzed. And the influence mechanisms of the air equalizing apparatus on the flow and heat transfer characteristics of the cooling delta unit and the outlet water temperature were studied. The results show that, with the air equalizing apparatus, the distribution of lateral windward wind speed and wall temperature of the two sides cooling columns are more uniform along the heat transfer bundle.

Key words: coal-fired power unit, indirect air-cooling system, cooling delta, air side equalizing device, flow heat transfer, water temperature distribution

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