建立了基于分排参数模型的数字化设计算法，以实现圆柱型直通表冷器的数字化设计与计算分析.模型在热力学、传热学的基础上，采用二分法进行迭代计算.利用建立的算法模型对不同制冷工况下的圆柱型直通表冷器进行设计计算，并与平面翅片管表冷器(总换热面积相等)的试验数据进行了比对分析.结果表明，对于循环风量和进出水温差一定的设计模式，标准工况下的圆柱型直通表冷器能提供更大的冷量；减小进水温度对换热影响作用不明显，而当提高进风温度，平面翅片管表冷器有更好的换热效果.计算同时得到了各排换热管的冷量分布规律，靠近进风、圆弧直径较小的换热管其换热性能更好，冷量更大.
For the purpose of digital design and calculation of cylindrical straight-through heat exchanger, design model based on sub-row-parameter model is established. The dichotomy iteration, based on thermodynamics and heat transfer theory, is employed. Model calculated results of cylindrical heat exchanger in different cooling conditions were compared with the experimental data of fin-tube heat exchanger. The results show that total cooling capacity of cylindrical heat exchanger is higher in standard condition. The reduction of water inlet temperature don’t have obvious impact on heat transfer while fin-tube heat exchanger will provide larger cooling capacity with the increase of air inlet temperature. The cooling capacity distribution of each row of tubes is also studied through calculation: the tubes with smaller diameter, which are closer to the air inlet, have better heat exchange performance and higher cooling capacity.
［1］王强, 刘燕龙, 刘祖一, 等. 不均匀风速分布下翅片管换热器的优化分析与实验［J］. 制冷学报, 2016, 37(6): 13-19.
WANG Qiang, LIU Yanlong, LIU Zuyi, et al. An optimized design and experimental research on finned-tube evaporator with nonuniform air distribution ［J］. Journal of Refrigeration, 2016, 37(6): 13-19.
［2］LEE W J, KIM H J, JEONG J H. Method for determining the optimum number of circuits for a fin-tube condenser in a heat pump ［J］. International Journal of Heat and Mass Transfer, 2016, 98: 462-471.
［3］韩维哲, 丁国良, 胡海涛, 等. 湿工况下翅片管换热器空气侧热质传递的数值模型［J］. 上海交通大学学报, 2013, 47(3): 385-391.
HAN Weizhe, DING Guoliang, HU Haitao, et al. Numerical model of heat and mass transfer for tube-finned heat exchangers under dehumidifying conditions ［J］. Journal of Shanghai Jiao Tong University, 2013, 47(3): 385-391.
［4］GU L, MIN J, WU X, et al. Airside heat transfer and pressure loss characteristics of bare and finned tube heat exchangers used for aero engine cooling considering variable air properties ［J］. International Journal of Heat and Mass Transfer, 2017, 108: 1839-1849.
［5］VOGUELIN S T J, RUSSEIL S, BOUGEARD D, et al. Numerical analysis of the fin spacing effect on the horseshoe vortex system evolution in a two-rows finned-tube heat exchanger ［J］. International Journal of Numerical Methods for Heat & Fluid Flow, 2013, 23(7): 1136-1154.
［6］GOUDARZI K, RAMEZANI S R, ZENDEHBUDI G. Estimation of thermal contact resistance in fin-tube heat exchanger using inverse heat transfer methods［J］. European Journal of Computational Mechanics, 2013, 22(5/6): 237-253.
［7］WU X, ZHAO J, WANG F. Simplified number of transfer unit formulas for the thermal performance calculation of multi-pass fin-tube heat exchangers ［J］. Science and Technology for the Built Environment, 2015, 21(2): 238-245.
［8］姚晔, 连之伟, 周湘江. 风机盘管换热器动态换热模型及计算机仿真［J］. 上海交通大学学报, 2004, 38(2): 316-320.
YAO Ye, LIAN Zhiwei, ZHOU Xiangjiang. Dyna-mic model and simulation of fan-coil heat exchanger ［J］. Journal of Shanghai Jiao Tong University, 2004, 38(2): 316-320.
［9］王磊, 谷波, 冯梦怡. 组合式空调箱中盘管热回收的性能分析［J］. 流体机械, 2016, 44(7): 63-69.
WANG Lei, GU Bo, FENG Mengyi. Performance analysis on the coil-heat recovery in air handle unit ［J］. Fluid Machinery, 2016, 44(7): 63-69.
［10］张杰, 谷波, 方继华. 受限空间中翅片管换热器的性能分析［J］. 制冷学报, 2014, 35(2): 36-43.
ZHANG Jie, GU Bo, FANG Jihua. Performance analysis on the fin-tube heat exchanger in limited space ［J］. Journal of Refrigeration, 2014, 35(2): 36-43.
［11］THEERAKULPISUT S, PRIPREM S. Modeling cooling coils ［J］. International Communications in Heat and Mass Transfer, 1998, 25(1): 127-137.
［12］张祉佑. 制冷原理与设备［M］. 北京: 机械工业出版社, 1986.
ZHANG Zhiyou. Refrigeration principle and equipment［M］. Beijing: China Machine Press, 1986.
