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基于供热负荷的吸收式热泵供热机组变工况性能分析 预览

Off-design Performance Analysis of an Absorption Heat Pump Heating Supplying System based on Heating Load
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摘要 建立热力计算模型,基于供热负荷的变化,对热泵供热系统供暖期内的变工况进行模拟。比较改造前后两种供热模式在相同热负荷下的热经济性能;发掘并对比不同供热模式的最大供热能力。结果表明,随着供热负荷的增加,热网回水温度升高,热泵性能系数COP下降。改造后的热泵供热模式热经济性能要优于传统供热模式,在相同供热负荷下,热泵供热模式总的供热抽汽量明显低于传统抽凝供热模式;总的发电量比传统抽凝供热模式增加了3%左右;发电标准煤耗比传统抽凝供热模式最大降低了近3%。改造后的热泵供热模式能满足的最大供热面积比传统抽凝供热模式增大了17.5%,明显增强了原有系统的最大供热能力。 According to the established thermodynamic model, the off-design performance was simulated based on heating load. The thermal economic performance was compared between the two heating models before and after the reformation under the same heating load. Calculate and compare the maximum heating area of the both heating model. Results show that with the increasing of heating load, the temperature of heating network water rises up, and the heat pump COP decreases . The absorption heat pump heating supplying system is superior to the traditional extraction heating supplying system . Under the same heating load, the total heating extraction volume of heat pump hating model is significantly lower than the tradition extraction heating model, the total power generation increases by about 3% the tradition extraction heating model, and the maximum reduction of standard coal consumption rate is nearly 3%. The maximum heating area of heat pump hating model can be increased by 17.5% compared with the traditional c extraction heating model, and the maximum heating capacity of the original system is obviously increased.
作者 胡乔良 李伟 郜宁 刘伟 林翔 HU Qiao-liang;LI Wei;GAO Ning;LIU Wei;LIN Xiang(Xinjiang xinneng Group Company Limited, Urumqi Electric Power Construction Commissioning Institute, Urumqi 830000, China;Electric Power Research Institute of Xinjiang Power Grid Corporation, Urumqi 830000, China)
出处 《汽轮机技术》 北大核心 2019年第3期217-220,196共5页 Turbine Technology
基金 国家电网公司科技项目资助。
关键词 热泵供热 变工况 热经济性能 最大供热能力 cogeneration heat supply network and building heat storage peak regulation dynamic characteristics
作者简介 胡乔良(1984-),男,硕士研究生,工程师。主要从事火电机组节能优化相关研究。
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