测试技术学报Issue(1)：7-13,7.DOI:10.3969/j.issn.1671-7449.2015.01.002
风冷散热器热阻流阻测试系统风洞和试验段设计
Design of the Wind Tunnel and Test Section of a Thermal and Flow Resistances Test System for Air Cooled Heat Sinks
张洪军 1韩伟栋 1付军2
作者信息
- 1. 中国计量学院 计量测试工程学院，浙江 杭州 310018
- 2. 杭州祥博电气有限公司，浙江 杭州 311200
- 折叠
摘要
Abstract
Thermal and flow resistances are two important parameters for the heat sinks used in power semiconductor devices.Design method of a thermal and flow resistances test system for air cooled heat sinks has been introduced in this paper.The maximum size of the test section is 500 mm×250 mm.The size of the test section is adjustable.The maximum speed of air flow is 15 m/s,while the maximum pressure drop of the heat sink being test is 800 Pa.Aerodynamic structure of the wind tunnel is designed as a low speed straight flow type.The power section is placed at the entrance of the tunnel.Following it,they are expansion section,stable section,contraction section,and testing section.The total length of the wind tunnel including test section is 5.2 m.The contraction ratio of the wind tunnel is 5.76.The aerodynamic calculating results show that the energy loss of the wind tunnel is 201 Pa.The input power of the wind tunnel is 1.9 kW.With a drawer-like plate component design,the size of the test section is adjustable.The adjustable plate component is composed with a horizontal plate and two vertical plates, and it is placed in the testing section box.The horizontal and vertical plates are connected by guide slots on the horizontal plate.The distance between the two vertical plates can be varied to any size in a certain range.The vertical plates are designed as several sizes,which makes it possible for measurements of sinks in several different heights.关键词
风冷散热器/热阻/流阻/风洞/试验段Key words
air cooled heat sink/thermal resistance/flow resistance/wind tunnel/test section分类
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张洪军,韩伟栋,付军..风冷散热器热阻流阻测试系统风洞和试验段设计[J].测试技术学报,2015,(1):7-13,7.
