Design, fabrication, and assessment of a comparative method device for measuring thermal conductivity of solids

The aim of the present study has been to assess the performance of a newly designed and fabricated device for measuring the heat conductivity coefficient of solids. This device operates on the comparative method and has been evaluated in contrast with the absolute method. Specifically, the accuracy, precision, and consistency of the fabricated solid heat conductivity meter has been evaluated. The results indicate that the comparative method has an error range of less than ۵%, highlighting its high level of accuracy. Additionally, the repeatability and stability of the comparative method were found to be ۷۱% compared to the absolute method. To further verify the device's performance, a dimensionless temperature variation parameter (ATV) has been introduced. This parameter was chosen to evaluate the device's accuracy and precision. A lower ATV value signifies better performance of the measurement method. The findings revealed that a ATV value closer to zero corresponds to higher temperature balance, indicating a more accurate measurement method. In conclusion, the study confirms that the fabricated solid heat conductivity measuring device performs effectively with a minimal error range and significant stability in comparative mode. The introduction of ATy as an evaluative metric provided a robust mean of assessing the device's accuracy and precision, further validating its use for measuring the heat conductivity coefficient of solids.

کلیدواژه ها:

Heat Transfer Coefficient ، Solids ، Laboratory Device ، Physical Parameter