| 烟气型吸收式制冷机的变工况特性研究 |
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| 引用本文： | 郑剑娇,郭培军,隋军,韩巍,石文星,金红光.烟气型吸收式制冷机的变工况特性研究[J].工程热物理学报,2012(8):1275-1278. |
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| 作者姓名： | 郑剑娇 郭培军 隋军 韩巍 石文星 金红光 |
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| 作者单位： | 中国科学院工程热物理研究所;中国科学院研究生院;清华大学建筑学院 |
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| 基金项目： | 国家重点基础研究发展计划973项目(No.2010CB227306);国家自然科学基金资助项目(No.50906086);国家863计划资助项目(No.2009AA05Z218) |
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| 摘 要： | 基于分布式冷热电联产系统变工况运行的实际需要,建立了烟气型双效溴化锂吸收式制冷机的变工况模型。制冷机变工况模拟计算时,保持浓溶液流量及换热系数(高压发生器除外)不变,得到了烟气进口温度、烟气流量及冷却水进口温度变化时的制冷机各重要性能参数曲线,发现当烟气流量低于50%时,COP下降较快,冷却水进口温度降低时有利于制冷机运行,但是要注意防止浓溶液结晶。制冷机额定工况模拟计算时,与已有文献进行对比,验证模型的可靠性。
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| 关 键 词： | 吸收式制冷 变工况 浓溶液 模拟 |
Off-Design Performance of an Exhaust-Fired Absorption Refrigerator |
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| ZHENG Jian-Jiao,GUO Pei-Jun,SUI Jun,HAN Wei,SHI Wen-Xing,JIN Hong-Guang.Off-Design Performance of an Exhaust-Fired Absorption Refrigerator[J].Journal of Engineering Thermophysics,2012(8):1275-1278. |
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| Authors: | ZHENG Jian-Jiao GUO Pei-Jun SUI Jun HAN Wei SHI Wen-Xing JIN Hong-Guang |
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| Institution: | 1 (1.Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China; 2.Graduate University of Chinese Academy of Sciences,Beijing 100190,China; 3.School of Architecture,Tsinghua University,Beijing 100190,China) |
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| Abstract: | This paper proposed a mathematical model to simulate the off-design performance of an exhaust-fired double-effect absorption refrigerator in a CCHP(Combined cooling,heating and power) system.Effects of exhaust gas inlet temperature and flow rate,cooling water inlet temperature on the performance of absorption refrigerator have been investigated,with the assumptions of constant value of strong solution flow rate and heat transfer coefficients.When the exhaust gas flow ratio is below 50%,COP drops quickly.The decrease of cooling water inlet temperature can improve the performance of absorption refrigerator,with the prevention of solution crystallization.The model has been compared with a published model to validate. |
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| Keywords: | absorption refrigerator off-design performance strong solution simulation |
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