Abstract
The contact area of bubbles with a transparent heating surface was optically measured during subcooled pool boiling of water on the ground. In the experiments, boiling bubbles were attached to the heating surface with a bubble holder and nearly reproduced the bubble behavior observed in low gravity. DC power was applied to the ITO heater and increased until the heater surface burned out. In quick heating, that is about 20 second until burnout and equal to the heating time during the low gravity period, the contact area was smaller than that for long time heating at the same heat flux. The experimental results suggest the reason why the critical heat flux in pool boiling is higher than the widely accepted predictions in microgravity. In a drop shaft experiment with constant heating, the contact area increased dramatically at the start of microgravity and became constant. Boiling bubbles coalesced and remained just over the heating surface.
| Original language | English |
|---|---|
| Pages (from-to) | 259-268 |
| Number of pages | 10 |
| Journal | Annals of the New York Academy of Sciences |
| Volume | 1027 |
| DOIs | |
| Publication status | Published - Jan 1 2004 |
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All Science Journal Classification (ASJC) codes
- Neuroscience(all)
- Biochemistry, Genetics and Molecular Biology(all)
- History and Philosophy of Science
Cite this
A study of subcooled pool boiling of water : Contact area of boiling bubbles with a heating surface during a heating process. / Suzuki, Koichi; Takahashi, Saika; Ohta, Haruhiko.
In: Annals of the New York Academy of Sciences, Vol. 1027, 01.01.2004, p. 259-268.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A study of subcooled pool boiling of water
T2 - Contact area of boiling bubbles with a heating surface during a heating process
AU - Suzuki, Koichi
AU - Takahashi, Saika
AU - Ohta, Haruhiko
PY - 2004/1/1
Y1 - 2004/1/1
N2 - The contact area of bubbles with a transparent heating surface was optically measured during subcooled pool boiling of water on the ground. In the experiments, boiling bubbles were attached to the heating surface with a bubble holder and nearly reproduced the bubble behavior observed in low gravity. DC power was applied to the ITO heater and increased until the heater surface burned out. In quick heating, that is about 20 second until burnout and equal to the heating time during the low gravity period, the contact area was smaller than that for long time heating at the same heat flux. The experimental results suggest the reason why the critical heat flux in pool boiling is higher than the widely accepted predictions in microgravity. In a drop shaft experiment with constant heating, the contact area increased dramatically at the start of microgravity and became constant. Boiling bubbles coalesced and remained just over the heating surface.
AB - The contact area of bubbles with a transparent heating surface was optically measured during subcooled pool boiling of water on the ground. In the experiments, boiling bubbles were attached to the heating surface with a bubble holder and nearly reproduced the bubble behavior observed in low gravity. DC power was applied to the ITO heater and increased until the heater surface burned out. In quick heating, that is about 20 second until burnout and equal to the heating time during the low gravity period, the contact area was smaller than that for long time heating at the same heat flux. The experimental results suggest the reason why the critical heat flux in pool boiling is higher than the widely accepted predictions in microgravity. In a drop shaft experiment with constant heating, the contact area increased dramatically at the start of microgravity and became constant. Boiling bubbles coalesced and remained just over the heating surface.
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UR - http://www.scopus.com/inward/citedby.url?scp=10844287789&partnerID=8YFLogxK
U2 - 10.1196/annals.1324.021
DO - 10.1196/annals.1324.021
M3 - Article
C2 - 15644360
AN - SCOPUS:10844287789
VL - 1027
SP - 259
EP - 268
JO - Annals of the New York Academy of Sciences
JF - Annals of the New York Academy of Sciences
SN - 0077-8923
ER -