Using the Monte Carlo method for estimation of temperature uncertainty due to infrared thermography and K-type thermoelement measurements

¹ Faculty of Management and Computer Modelling, Kielce University of Technology, Al. 1000-lecia P.P. 7, 25-314 Kielce, Poland
² Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Al. 1000-lecia P.P. 7, 25-314 Kielce, Poland
³ Echo Investment S.A., Al. Solidarnosci 36, 25-323 Kielce, Poland

^* Corresponding author: beatam@tu.kielce.pl

Published online: 4 July 2024

Abstract

The main objective of this study is to estimate the uncertainty of surface temperature measurement using the Monte Carlo method. The calculation is based on an experimental study on heat transfer during fluid flow in a group of parallel minichannels with a common heated wall. Temperature distributions on the heated wall surface were performed simultaneously using infrared thermography and K-type thermoelements. Infrared thermography is the contactless temperature measurement method, while thermoelement measurement is the contact method (measurement at selected points). Example results of both methods of temperature measurement were presented and discussed. In the calculations, the Monte Carlo method was used to estimate the uncertainty of surface temperature measurement uncertainty. Comparative analyses of Monte Carlo simulation results and uncertainty spreading methods were carried out. The results obtained from these two methods were found to be consistent.