新型锥体热沉射流散热器散热性能的实验研究  

Experimental study of thermal performance of a new jetting radiator with cone heat sink

作　　者：李荟卿[1] 唐志国[1] 郝嘉欣 江超[1] 刘轻轻 

机构地区：[1]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2015年第12期1612-1616,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家科技支撑计划重大资助项目(2013BAG13B00;2014BAG06B02)

摘　　要：文章针对高热流通量的大功率器件,提出了一款新型锥体热沉射流散热器,通过在底板上增设锥体热沉,增大换热边界层面积,实现高效换热;构建了一套实验系统,通过改变冷却水流量、热源输入功率等工况,对其开展了散热特性实验研究。实验结果表明,该新型锥体热沉散热器可以对大功率热源实现快速冷却,当总散热功率达到900W(热流密度9.9W/cm2)时,采用7L/min的冷却水流量,可以将热源温度降至65℃以下,并且冷却水流量为影响散热器散热性能的主要因素,流量越大,散热效果越好。In view of high-power devices with high heat transport capability, a new type of jetting radi- ator with cone heat sink is proposed, which is efficient to increase the heat transfer area of the bound- ary layer by the addition of cone heat sink on the floor. An experimental system is constructed based on the radiator, and the experimental investigation on an active cooling system is conducted by changing the cooling water flow and heat input power conditions. The results demonstrate that the new jetting radiator with cone heat sink has good cooling performance on high-power heat source. When the total power dissipation increases to 900 W with a heat flux density of 9. 9 W/cm2 and the cooling water flow rate is 7 L/rain, the surface temperature of heat source is under 65 ℃. The cooling water flow rate is the main factor affecting the cooling performance, with the increase of water flow rate, the performance of the radiator is better.

关 键 词：冲击射流 锥体热沉 散热器 实验研究 

分 类 号：TK124[动力工程及工程热物理—工程热物理]