论文标题
用于精确热通量测量的商业热电模块的表征
Characterization of Commercial Thermoelectric Modules for Precision Heat FLux Measurement
论文作者
论文摘要
在本文中，我们提出了一种使用商业热电模块（TEMS）精确测量热通量的成本效益方法。研究了用TEMS测量热通量的两种不同的方法，即基于塞贝克效应和基于毛发效应的主动模式的被动模式。对于这两种模式，对TEM作为热通量计进行校准，以显示TEM上的电压与从0到100 MW的热流速之间的线性关系。尽管这两种模式都表现出足够高的敏感性，适用于低热流量测量，但活动模式显示为$ \ sim $ \ sim，$ 7倍$ 7倍的敏感性比被动模式高7倍。从对测量不确定性的起源的猜测，我们通过在被动模式下操作顶部TEM，而其底部温度通过反馈控制的底部TEM保持恒定。通过稳定底部温度，双重组件方案可以抑制敏感性不确定性多达4次。 1.5厘米$ \ $ $ 1.5厘米的响应时间为8.90 $ \ pm $ 0.97秒的供暖和10.83 $ \ pm $ \ pm $ 0.65秒的冷却时间比商用热量计量机慢，但仍然足够快，可以在10秒的订单上测量热量，以测量热量。我们认为，获得的结果可以促进在各种热实验中使用商业TEM进行热通量测量
In this article, we present a cost-effective approach to the precision measurement of heat flux using commercial thermoelectric modules (TEMs). Two different methods of measuring heat flux with TEMs are investigated, namely passive mode based on the Seebeck effect and active mode based on the Peltier effect. For both modes, a TEM as a heat fluxmeter is calibrated to show a linear relation between the voltage across the TEM and the heat flow rate from 0 to 100 mW. While both modes exhibit sufficiently high sensitivities suitable for low heat flow measurement, active mode is shown to be $\sim$7 times more sensitive than passive mode. From the speculation on the origin of the measurement uncertainty, we propose a dual TEM scheme by operating the top TEM in passive mode while its bottom temperature maintains constant by the feedback-controlled bottom TEM. The dual-TEM scheme can suppress the sensitivity uncertainty by up to 4 times when compared to the single-TEM passive mode by stabilizing the bottom temperature. The response time of a 1.5 cm $\times$ 1.5 cm TEM is measured to be 8.90 $\pm$ 0.97 seconds for heating and 10.83 $\pm$ 0.65 seconds for cooling, which is slower than commercial heat fluxmeters but still fast enough to measure heat flux with a time resolution on the order of 10 seconds. We believe that the obtained results can facilitate the use of a commercial TEM for heat flux measurement in various thermal experiments
