On the use of infrared thermography in studies with air curtain devices

Neto, Luís; Silva, Manuel Gameiro da; Costa, José J.

http://hdl.handle.net/10400.11/642

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
Energy and Buildings 2006.pdf		434.43 KB	Adobe PDF	Download

Send Feedback

Authors

Neto, Luís

Silva, Manuel Gameiro da

Costa, José J.

Abstract(s)

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.

Keywords

Infrared thermography Air curtains Aerodynamic sealing Whole-ﬁeld measuring techniques

URI

http://hdl.handle.net/10400.11/642

Citation

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