- Author
-
Klassen, M. E.
|
diMarzo, M.
|
Sirkis, J.
- Title
- Infrared Thermography of Dropwise Evaporative Cooling.
- Coporate
- Maryland Univ., College Park
- Journal
-
Experimental Thermal and Fluid Science,
Vol. 5,
No. 1,
136-141,
1992
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
HTD-Vol. 141,
- Book or Conf
- American Institute of Aeronautics and Astronautics/American Society of Mechanical Engineers (AIAA/ASME). Heat and Mass Transfer in Fires. AIAA/ASME Thermophysics and Heat Transfer Conference. HTD-Vol. 141. June 18-20, 1990,
Am. Soc. of Mechanical Engineers, New York,
Seattle, WA,
Quintiere, J. G.; Cooper, L. Y., Editors,
117-121 p.,
['1990', '1992']
- Keywords
-
heat transfer
|
mass transfer
|
evaporation
|
cooling
|
temperature distribution
|
droplets
|
data processing
|
infrared thermography
|
droplet flow
|
image processing
|
evaporation cooling
- Identifiers
- opaque glass-like material (MACOR)
- Abstract
- An infrared thermographic technique is developed to obtain the transient solid surface temperature distribution in the neighborhood of an evaporating droplet. This technique is nonintrusive and is not affected by the time response of the measuring device (i.e., thermocouple). The entire surface is monitored at any instant of time, and information on the area influenced by the evaporative cooling process is easily derived. A detailed description of the image processing based data reduction is provided. A water droplet in the range of 10-50 muL is deposited on an opaque glasslike material (Macor) that has an initial surface temperature between 100 and 165 deg C. The evaporative cooling process is fully documented, and these new findings are contrasted with the published literature to gain a better understanding of the phenomena involved.