某管翅式换热器设计研究  

Design Studies of Some Tube-fin Heat Exchanger

作　　者：倪明 侯世红 NI Ming;HOU Shihong(The 20th Research Institute of CETC,Xi'an 710068)

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068

出　　处：《舰船电子工程》2023年第12期228-232,共5页Ship Electronic Engineering

摘　　要：某管翅式换热器拟设计用于高热耗军用机柜内热量交换,其设计过程中,冷却液分液系统设计、风道换热面积、风扇功率等因素均对换热器整体效率存在较大影响[1]。通过尼古拉兹实验曲线拟合雷诺数,对“Z”型分液流道进行理论分析,归纳分液流量受管道特征影响的变化特性,对流道进行优化,通过计算平均温差对翅片换热面积进行求解。完成了一种满足换热功率要求的管翅式换热器结构设计,通过ICEPAK仿真计算加以验证。总结了换热器基本设计环节、关重项以及均温性调节方法,归纳了某型换热器分液管路的分液特性:“Z”型并联分液管路中,中间位置路径流量小于两侧分液路径流量,增大负载段流阻与分液段流阻比值可提高流量分配均匀性。A certain tube fin heat exchanger is planned to be designed for heat exchange in high heat consumption military cabinets.During the design process,factors such as the design of the coolant separation system,the heat exchange area of the air duct,and the power of the fan all have a significant impact on the overall efficiency of the heat exchanger[1].By fitting the Reynolds number with the Nicholas experimental curve,theoretical analysis is conducted on the"Z"type liquid separation channel.The varia⁃tion characteristics of the liquid separation flow rate affected by pipeline characteristics are summarized,and the channel is opti⁃mized.The heat transfer area of the fins is solved by calculating the average temperature difference.A tube fin heat exchanger struc⁃ture design that meets the heat transfer power requirements has been completed and verified through ICEPAK simulation calcula⁃tions.The article summarizes the basic design steps,key items,and temperature uniformity adjustment methods of a heat exchanger,and summarizes the liquid separation characteristics of a certain type of heat exchanger's liquid separation pipeline.In the"Z"type parallel liquid separation pipeline,the flow rate of the middle position path is smaller than that of the two sides of the liquid separa⁃tion path.Increasing the ratio of load section flow resistance to liquid separation section flow resistance can improve the uniformity of flow distribution.

关 键 词：管翅式 尼古拉兹实验曲线 平均温差 分液特性 

分 类 号：TK172[动力工程及工程热物理—热能工程]