• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>American Society of Mechanical Engineers(ASME) Heat Transfer/Fluids Engineering Summer Conference 2004(HT/FED 2004) vol.3; 20040711-15; Charlotte,NC(US) >THE EFFECT OF MARTIAN DUST ON RADIATOR PERFORMANCE
【24h】

THE EFFECT OF MARTIAN DUST ON RADIATOR PERFORMANCE

机译：玛氏粉尘对散热器性能的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Experiments were performed in which the effective emittance of three types of radiator coatings was measured as Martian dust simulant was added to the radiator surface. The apparatus consisted of multiple radiator coupons on which Carbondale Red Clay dust was deposited. The coupons were powered by electric heaters, using a guard-heating configuration to achieve the accuracy required for acceptable emittance calculations. The apparatus was contained in a vacuum chamber that featured a liquid-nitrogen cooled shroud that simulated the Martian sky temperature. Radiator temperatures ranged from 250 to 350 K with sky temperatures from 185 to 248 K. Results show that as dust was added to the radiator surfaces, the effective emittance of the high-emittance coatings decreased from near 0.9 to a value of about 0.5. A low-emittance control surface, polished aluminum, demonstrated a rise in effective emittance for thin dust layers, and then a decline as the dust layer thickened. This behavior is attributed to the conductive resistance caused by the dust layer.
机译：进行实验，在将火星粉尘模拟物添加到散热器表面时，测量了三种散热器涂层的有效发射率。该设备由多个散热片组成，在其上沉积有Carbondale红粘土粉尘。试片由电加热器供电，采用防护加热配置，以达到可接受的发射率计算所需的精度。该设备被包含在一个真空室内，该真空室内设有液氮冷却的罩，可模拟火星的天空温度。散热器温度范围为250至350 K，天空温度范围为185至248K。结果表明，当将灰尘添加到散热器表面时，高发射率涂层的有效发射率从接近0.9降低到约0.5。低辐射控制表面抛光铝表明，薄尘层的有效发射率上升，然后随着尘层变厚而下降。该行为归因于由灰尘层引起的导电电阻。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号