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Bypass Heating System with Integrated Steam Ejector and Performance Analysis
- Vol. 58, Issue 11, Pages: 205-213(2025)
- 作者机构：
国网冀北电力有限公司电力科学研究院（华北电力科学研究院有限责任公司）,北京,100045
- 作者简介：
- 基金信息：
DOI：10.11930/j.issn.1004-9649.202406101
CLC：-
Published Online：01 December 2025，
Published：01 December 2025
- 稿件说明：
移动端阅览
许继东, 梅隆, 宋亚军, 王争明, 司派友, 赵宁, 刘双白. 集成蒸汽喷射器的旁路供热系统及性能分析[J]. 中国电力, 2025, 58(11): 205-213.
XU Jidong, MEI Long, SONG Yajun, et al. Bypass Heating System with Integrated Steam Ejector and Performance Analysis[J]. 2025, 58(11): 205-213.
许继东, 梅隆, 宋亚军, 王争明, 司派友, 赵宁, 刘双白. 集成蒸汽喷射器的旁路供热系统及性能分析[J]. 中国电力, 2025, 58(11): 205-213. DOI： 10.11930/j.issn.1004-9649.202406101.
XU Jidong, MEI Long, SONG Yajun, et al. Bypass Heating System with Integrated Steam Ejector and Performance Analysis[J]. 2025, 58(11): 205-213. DOI： 10.11930/j.issn.1004-9649.202406101.
摘要
针对常规旁路供热系统中旁路蒸汽在减温减压过程存在的余能损失问题，提出了一种耦合蒸汽喷射器的新型旁路供热系统。通过增设蒸汽喷射器，使旁路蒸汽引射汽轮机乏汽用于供热，不仅实现了能量的梯级利用，而且降低了机组冷源损失。以某300 MW热电联产机组为研究对象，使用 EBSILON建立了机组热力学计算模型，对新型旁路供热系统调峰能力、热力性能以及经济性进行全面分析。结果表明：相比于常规旁路系统，新型旁路系统供热能力增加97.26 MW，最小电负荷率降低0.14。在相同电热负荷工况下，新型系统发电热效率提高19.4%，节约标煤9.2 t/h，年化新增收益净现值达到216万元，具有较高的经济效益与推广价值。
Abstract
In order to solve the problem of residual energy loss of bypass steam in the process of temperature and pressure reduction in the normal pressure bypass heating system
a new bypass heating system connected to the bypass heating system was proposed. By adding a steam ejector
the bypass steam is injected into the steam turbine exhaust steam to provide heat
which not only reduces the energy cascade utilization
but also causes a loss of cold source in the central air conditioner. Taking a 300MW combined heat and power central air conditioner as the research object
a thermodynamic calculation model of air conditioner central air conditioner was established using EBSILON to conduct a comprehensive analysis of the peak shaving capacity
thermal performance and economy of the new bypass heating system. The results show that compared with the conventional bypass system
the heating capacity of the new bypass system increases by 97.26 MW
and the minimum electric load rate decreases by 0.14. Under the same electric heating load conditions
the new system's power generation thermal efficiency increased by 19.4%
saving 9.2 tons of standard coal per hour
and the annualized net present value of income increased by 2.16 million yuan
with higher economic benefits and promotion value.
关键词
Keywords
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