Quantitative Infrared Thermography and Convective Heat Transfer Measurements (Keynote Lecture)
by
Giovanni M. Carlomagno
Facolta di Ingeneria DETEC, Piazzale Tecchio, 80-80125 Napoli, Italy
Coauthors: Keynote Lecture

Infrared (IR) thermography is a two-dimensional, non-contact technique of temperature measurement which can be usefully exploited in a vast variety of industrial applications as well as research fields [1-9]. The infrared scanning radiometer (IRSR) basically includes a camera which detects the electromagnetic energy radiated in the infrared spectral band by an object (whose surface temperature is to be measured) and converts it into an electronic video signal. This signal corresponds to the object temperature map. In the present work, attention is focused on the capability of IRSR to measure heat transfer coefficients in three different fluid flow configurations; in particular, the heat transfer to a jet centrally impinging on a rotating disk; the complex heat transfer pattern associated with a jet in cross-flow; the heat transfer distribution along a 180deg turn channel.

Date received: February 17, 1999