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J.E. Gonzalez ; D. Fabris ; R. Sharma ; C. Bash ; O. E. Ruiz ;Ingeniería Mecánica. Tecnología y Desarrollo 2007, 2 4

Author: S. Escobar Vargas

Source: http://www.redalyc.org/


Ingeniería Mecánica.
Tecnología y Desarrollo ISSN: 1665-7381 fjso@servidor.unam.mx Sociedad Mexicana de Ingeniería Mecánica México Escobar Vargas, S.; Gonzalez, J.E.; Fabris, D.; Sharma, R.; Bash, C.; Ruiz, O.
E. Microbubble efficiency during fast boiling growth Ingeniería Mecánica.
Tecnología y Desarrollo, vol.
2, núm.
4, marzo, 2007, pp.
139-144 Sociedad Mexicana de Ingeniería Mecánica Distrito Federal, México Available in: http:--www.redalyc.org-articulo.oa?id=76816763004 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative INGENIERÍA MECÁNICA TECNOLOGÍA Y DESARROLLO Fecha de recepción: 12-10-06 Fecha de aceptación: 7-02-07 Vol.
2 No.
4 (2007) 139 - 144 Microbubble efficiency during fast boiling growth Escobar Vargas S.1, Gonzalez J.E.1, Fabris D.1, Sharma R.2, Bash C.2, Ruiz O.
E.3 Santa Clara University, sescobarvargas@scu.edu, jgonzalezcruz@scu.edu, dfabris@scu.edu 2 Hewlett-Packard.
ratnesh.sharma@hp.com, cullen.bash@hp.com 3 University of Puerto Rico.
oruiz@me.uprm.edu 1 ABSTRACT The microboiling in confined spaces is characterized through bubble area measurements for enclosed small planar heaters (41 µm x 45 µm).
A laser visualization technique is used to measure the bubble area viewed from above.
The bubbles are generated in deionized water by heating pulses of power inputs (2.6-3.7 W) and total energy releases (8.6-13.9 µJ).
The bubble lifecycle lasts for 10 µs - 16 µs.
Direct observations of bubble area show a rapid bubble film growth followed by a volumetric growth, subsequent collapse, and bubble regrowth.
The bubble vapor pressure, generated mechanical power, and bubble efficiencies at different energy and heating rate conditions were calculated using a hemispherical cap model for the bubble...

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