...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Thermophysics and Heat Transfer >Experimental In-Cavity Radiative Calibration of High-Heat-Flux Meters
【24h】

Experimental In-Cavity Radiative Calibration of High-Heat-Flux Meters

机译：高热通量计的腔内辐射校准实验

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The accuracy of the "in-cavity" calibration of heat-flux meters up to 500 kW ·m~(-2) irradiance levels by insertion into the cavity of a high-temperature blackbody is examined. The experimental study consists of measurements on two thermopile heat-flux meters using two graphite-tube variable-temperature blackbodies. To provide a baseline comparison, the meters were first calibrated up to 50 kW·m~(-2) outside the blackbody cavity with the irradiance level determined using a well-characterized electrical substitution radiometer. In contrast to the outside calibration method, in-cavity calibration covers the full heat-flux range of the meters. The measured radiance distribution along the cavity axis, corroborated by Monte Carlo simulations, shows that the optimum location for the meter is approximately one cavity radius from the closed end of the cavity. The in-cavity measured responsivity values corrected for the effective emissivity agree with the outside-cavity values within the measurement uncertainty. The results demonstrate the feasibility of using in-cavity techniques to calibrate heat-flux meters at high irradiance levels, limited primarily by the blackbody operating temperature.
机译：通过插入高温黑体的空腔中，检查了高达500 kW·m〜（-2）辐照度水平的热通量计的“腔内”校准的准确性。实验研究包括使用两个石墨管可变温度黑体在两个热电堆热通量计上进行的测量。为了提供基线比较，首先将电表校准至黑体腔外部最高50 kW·m〜（-2），并使用特征明确的电子替代辐射计确定辐照度。与外部校准方法相反，腔内校准涵盖了仪表的整个热通量范围。蒙特卡洛模拟证实了沿腔轴测得的辐射分布，表明仪表的最佳位置是距腔体封闭端大约一个腔体半径。为有效发射率校正的腔内测量响应度值与测量不确定度内的腔外值相符。结果证明了使用腔内技术在高辐照度下校准热通量计的可行性，这主要受黑体工作温度限制。

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