平板显示器辐射散热比例影响因素分析 |
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引用本文: | 刘小倩,张旭,张韵淇.平板显示器辐射散热比例影响因素分析[J].硅酸盐建筑制品,2014(1):18-21. |
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作者姓名: | 刘小倩 张旭 张韵淇 |
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作者单位: | 同济大学暖通空调及燃气研究所,上海201804 |
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摘 要: | 利用经验公式计算竖直平板显示器散热量,并计算显示器辐射散热比。分析了显示器表面发射率、平板设备表面温度、空气温度、围护结构表面温度和平板显示器高度这5个因素对辐射散热的影响。结果表明,辐射散热比例随着平板表面温度的升高先增大后减小。空气温度和围护结构表面温度在平板表面温度低于50℃时,对辐射散热比例影响比较明显;而当平板表面温度高于40℃时,随着特征长度增加,辐射散热比例先增大后减小。
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关 键 词: | 设备负荷 散热量 竖直平板 辐射散热量 辐射散热比 |
Influence Factors Analysis of Radiant-Convective Splits from Flat Panel Display |
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Authors: | LIU Xiao-qian ZHANG Xu ZHANG Yun-qi |
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Affiliation: | (Institute of HVAC & GAS Engineering, Tongji University, Shanghai 201804, China) |
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Abstract: | The empirical formula was applied to calculate heat dissipation of vertical fiat-panel and the radiant-convective splits ratio. Based on the calculation, the effects of display surface emissivity, sur- face temperature, air temperature and characteristic length on radiant-convective splits were analyzed. The results show that radiation ratio increase and then decrease with flat surface temperature rising. Besides air and wall surface temperatures have a significant influence on the radiant-convective splits, with the fiat surface temperature blow 50℃. When flat surface temperature is higher than 40℃, the characteristic length effects on the radiant ratio increase are first active and then negative. |
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Keywords: | equipment cooling load heat dissipation vertical plate radiation heat radiant-convectivesplits |
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