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Nucleate Pool Boiling Heat Transfer in Vertical Annuli
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 Title & Authors
Nucleate Pool Boiling Heat Transfer in Vertical Annuli
Gang, Myeong-Gi;
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 Abstract
Effects of gap sizes(3.9 and 15mm) of vertical annuli and the bottom blockage on the nucleate pool boiling heat transfer at atmospheric pressure condition have been examined experimentally, and the results were compared to those with a single tube without confinement. The annular geometry resulted in significant increase in heat transfer coefficient. The effect is much enhanced with the bottom blockage. The heat transfer coefficient for the closed bottom condition is three times greater than the unconfined tube at 30kW/㎡ when the gap size is 3.9mm. However, with further increase of the heat flux much more than 70kW/㎡, all these effects were diminished.
 Keywords
Pool Boiling;Annuli;Vertical Tube;
 Language
Korean
 Cited by
1.
하부폐쇄 환상공간의 외부 튜브길이가 풀비등에 미치는 영향,강명기;

대한기계학회논문집B, 2006. vol.30. 8, pp.749-755 crossref(new window)
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