NETO, L.P.C.; SILVA, M. G. da; COSTA, J.J. - On the use of infrared thermography in studies with air curtain devices. Energy and Buildings. ISSN 0378-7788. Vol. 38, nº 10 (Outubro 2006), p. 1194-1199
Title
On the use of infrared thermography in studies with air curtain devices
Subject
Infrared thermography Air curtains Aerodynamic sealing Whole-field measuring techniques
Date
2011-05-13T16:55:51Z 2011-05-13T16:55:51Z 2006-10
Description
Among the different existing methods to characterise the aerodynamic sealing effect provided by an air curtain device placed over the opening between two contiguous compartments, infrared thermography has revealed to be a very useful tool. Besides allowing the capture, in an expedite way, of instantaneous images of the temperature field in the neighbourhood of the door, the technique hereon described has other advantages, in terms of quick and easy setup, low intrusive character and liability of obtained results.
To apply this method, a large sheet of paper was stretched in the direction perpendicular to the opening where the air curtain device has placed to allow the registration of pictures or video sequences with an infrared camera setup in its maximum sensitivity.
Good concordance between the thermographs obtained with this technique and the temperature fields measured for the same plane with a rack of 16 low velocity omni-directional thermal anemometer probes allowed its validation.
Various elucidative examples of the use of this technique as a complementary tool for analysis and visualization of the complex physical phenomena occurring for the studied flow are presented in this article.
