Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
673069 | Thermochimica Acta | 2015 | 5 Pages |
Abstract
•Common photopyroelectric technique needs normalization with a reference sample.•Handicap: two measurements are necessary in both investigated sample and reference.•Solution: modulation frequency scan in only the investigated sample.•Sensor itself becomes the reference at high frequency.•Thermal effusivity can be recovered at low frequencies.
In this paper a measurement methodology is proposed to avoid some limitations of conventional front photopyroelectric technique for thermal effusivity measurements, related to the necessity of calibration using a reference sample. The same pyroelectric sensor heated at high frequencies acts as a reference sample. The proposed method is tested with measurements of thermal effusivity in liquid samples.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Rumen Ivanov, Ernesto Marin, P.D. Alaniz, J.J. Villa, J.A. Bermejo Arenas,