流体机械

2018, v.46;No.551(05) 58-62+12

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夏热冬冷地区回路热管应用于农村通信基站散热的特性研究
Research on Cooling Characteristics of Loop Heat Pipe Applied to Rural Base Station in the Hot Summer and Cold Winter Regions

鲁祥友;肖乐乐;鲁飞;唐景春;林媛;
LU Xiang-you;XIAO Le-le;LU Fei;TANG Jing-chun;LIN Yuan;Anhui Jianzhu University;Hefei University of Technology;

摘要(Abstract):

农村通信基站的能耗已逐年上升,夏热冬冷地区如何利用自然冷源来代替基站空调成为当前农村通信基站节能减排的核心问题之一。针对这一情况提出了一种应用于农村通信基站散热的铜/甲醇回路热管(LHP)装置,试验研究了不同布置方式、不同充液率以及不同空气流速下LHP的换热特性。研究结果表明:当LHP蒸发端布置在机柜3/4处,能有效降低机柜整体散热量,满足基站运行温度30℃界限,同时能优化LHP启动特性和基站换热特性;保证热管运行在最优工况下,热管充液率应为50%;为了提高LHP换热效率,机械送风风速维持在3~5 m/s,能满足LHP换热要求,并且降低了风机能耗;当机柜的设备散热功率为1 k W的时候,热阻达到了0.008 K/W左右,表明回路热管系统运用在基站散热具有良好的传热特性。
Energy consumption of rural communication base stations has been increasing year after year. How to make use of natural cold source instead of base station's air conditioning has become one of the core problems of energy conservation and emission reduction of rural communication base stations. In this paper,a copper/methanol loop heat pipe(LHP) device applied in cooling of rural communication base stations was proposed and heat transfer characteristics of LHP under different arrangement,different filling rate and different wind speed were experimentally researched. The research results show that when the evaporator section of LHP is installed at the location of 3/4 of equipment cabinet,the overall heat dissipating capacity of cabinet can be effectively reduced,the equipment operation temperature limit of 30℃ can be met, at the same time, the start-up characteristics and the maximum heat transfer characteristics of LHP can be optimized;In order to make heat pipe operate under the optimal conditions,the filling rate of heat pipe shall be 50%;In order to improve the heat transfer efficiency of LHP,maintaining mechanical air supply speed at 3~5 m/s can satisfy the heat transfer requirement of LHP and reduces the energy consumption of the fan;When the heat dissipating power of the equipment in the cabinet is 1 k W,the thermal resistance reaches about 0.008 K/W,indicating that the loop heat pipe system has good heat transfer characteristics in the heat dissipation of the base station.

关键词(KeyWords): 回路热管(LHP);基站;热阻;充液率;风速
loop heat pipe(LHP);base station;thermal resistance;filling rate;wind speed

Abstract:

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基金项目(Foundation): 国家自然科学基金项目(51606002);; 安徽省高等学校省级自然科学研究项目(KJ2014A039);; 国家级大学生科技创新创业训练计划项目(201610878019)

作者(Author): 鲁祥友;肖乐乐;鲁飞;唐景春;林媛;
LU Xiang-you;XIAO Le-le;LU Fei;TANG Jing-chun;LIN Yuan;Anhui Jianzhu University;Hefei University of Technology;

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