本文以HFC134a和HCFC22为工质对光管及两种不同槽型的强化传热管(DAE-2管与DAEC管)的水平管内凝结换热进行了对比实验研究。研究发现，DAE-2管平均换热系数比光管提高了140%170%, 而单位长度阻力损失增加了50%100%, DAEC管平均换热系数比光管提高了160%200%, 同时单位长度阻力损失增加了70%130%。此外，本文给出了DAE-2管和DAEC管平均换热系数及阻力损失的计算关联式,可用于冷凝器设计
Using HFC134a and HCFC22 as the working fluid, the comparative experimentalstudies on horizontal condensation in smooth tube and two other augumented heattransfer tubes with different groove shapes (DAE-2 tube and DAEC tube)areconducted. As the experimental results indicated, compared with the smoothtube, the average heat transfer coefficient of DAE-2 is improved by140%to 170% and the pressure drop per unit length increased by 50%to100%. In addition, the average heat transfer coefficient of DAEC tube isenhanced by 160%to 200% and the pressure drop per unit length increased by70% to 130%. Further more, the empirical formulas about average heat transfercoefficient and pressure drop of the DAE-2 tube and DAEC tube are given inthis paper，which can be used to design condensers
参考文献
| [1] | 王维城,张文喜.DAE高效蒸发传热管内沸腾换热系数及压力损失的准则关联式[J].制冷学报,1991(02):1. |
| [2] | D P Rohsenow W M;Baron A B .Forced Convective CondensationInside Tubes: a Heat Transfer Equation for Condenser Design[J].ASHRAE Transactions,1973(79):157-165. |
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