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| 提高翅片管式换热器热力性能的方法 | |
| 引用本文： | 李革,于功志,程木军,张殿光.提高翅片管式换热器热力性能的方法[J].大连水产学院学报,2006,21(1):68-71. |
| 作者姓名： | 李革 于功志 程木军 张殿光 |
| 作者单位： | 1. 大连水产学院,辽宁省水产品加工及综合利用重点开放实验室,辽宁,大连,116023;大连水产学院,食品工程系,辽宁,大连,116023;大连理工大学,动力系,辽宁,大连,116024 2. 大连水产学院,机械工程学院,辽宁,大连,116023 3. 大连市海事局,辽宁,大连,116001 4. 大连水产学院,食品工程系,辽宁,大连,116023 |
| 摘 要： | 对翅片管式换热器结构进行了优化设计和改进,并采用TESCOR平台———换热器性能实验台对改进前后的换热器的热力性能进行了测试。提出了强化翅片管式换热器换热性能的两种方法:一种是将低温工况下易结霜的换热器(蒸发器)翅片管设计成变间距翅片结构,使其既增加了管内翅片的传热面积,又提高了管内气流的流速;另一种是将空调工况下的换热器的等螺距内螺纹管设计成变螺距内螺纹管,以增加管内气流的扰动,提高传热系数。并对用这两种方法改进后的换热器的热力性能进行了计算,结果表明,其传热系数分别提高了9.8%和3.82%。 |
| 关 键 词： | 换热器 翅片管 传热系数 热力计算 |
| 文章编号： | 1000-9957（2006）01-0068-04 |
| 收稿时间： | 04 12 2005 12:00AM |
| 修稿时间： | 2005-04-12 |
Methods for improving heat transfer in fin-tube heat exchangers |
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| LI Ge,YU Gong-zhi,CHENG Mu-jun,ZHANG Dian-guang.Methods for improving heat transfer in fin-tube heat exchangers[J].Journal of Dalian Fisheries University,2006,21(1):68-71. | |
| Authors: | LI Ge YU Gong-zhi CHENG Mu-jun ZHANG Dian-guang |
| Institution: | 1. Key and Open Laboratory of Aquatic Processing and Utilization of Liaoning Province, Dalian Fisheries Univ. , Dalian 116023, China; 2. Department of Food Precessing, Dalian Fisheries Univ., Dalian 116023, China; 3. Power Engineering Department of Dalian University of Technology, Dalian 116023, China; 4. School of Mechanical Engineering, Dalian Fisheries Univ. , Dalian 116023, China; 5. Dalian Maritime Safety Administrtion, Dalian 116001, China |
| Abstract: | In order to optimize the structure of fin-tube heat exchangers,two methods was put forward in the paper.Under refrigeration condition,the spacing of fins was varied in the easily-frosted heat exchangers.Under air-conditioning condition,the thread pitch of the inner screw thread tubes was varied.The results have shown that the heat transfer coefficients in the two cases can be increased by 9.8%% and 3.82% respectively. |
| Keywords: | heat exchanger fin-tube heat transfer coefficient thermodynamic calculation |
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