J.A. Myrick , M. Keyhani , J.I. Frankel , M. Bouchez and F. Falempin
DOI Number XXX-YYY-ZZZ
Conference Number HiSST 2018_1720965
This study presents the calibration and testing of a stainless steel plate senor which measures the total surface heat transfer from a heat flux source that varies in space and time. The calibration of the plate sensor is accomplished using the calibration integral equation method (CIEM) which requires calibration data along with measured in-depth temperature data from a field test to predict the total surface heat transfer for the field test. The calibration data consists of a measured uniform heat transfer input to the surface of the plate along with the average of the measured temperatures from thermocouples installed at the same specified depth just below the back surface of the plate. Time and total heat transfer rescaling techniques are used to help account for the temperature dependent thermal conductivity and thermal diffusivity. An accurate prediction of the total surface heat transfer into the calibrated plate sensor is obtained regardless of the spatial distribution of the surface heating, the choice of calibration test data or the measurement noise magnitude in the field test temperature. Upon completing this array of tests on the calibrated plate, a thermal-barrier coating (TBC) of ZrO2 is adhered to the heated surface of an identical plate. A second study is performed using this two-layer configuration with a 0.5mm layer of ZrO2. Results are presented comparing the TBC study with that of the initial uncoated surface investigation.