Nucleate pool boiling, film boiling and single-phase free convection at pressures up to the critical state. II. Circumferential variation of the wall superheat for a horizontal 25 mm copper cylinder.
Ebullitión libre nucleada, ebullición pelicular y convección libre monofásica a presiones próximas al estado crítico. II. Variación circunferencial del sobrecalentamiento de la pared para un cilindro horizontal de cobre de 25 mm.
Author(s) : GORENFLO D., BAUMHÖGGER E., WINDMANN T., et al.
Type of article: Article
Summary
Transcritical working cycles of refrigerants led to increased interest in heat transfer near the critical state. In general, experimental results for this region differ significantly from those far from it because some fluid properties vary much more there than at a greater distance. In this paper, two-phase and single-phase free convective heat transfer to refrigerant R125 is discussed for fluid states very close to the critical point and far from it. In part II, circumferential variation of the wall superheat is related to the motion of the fluid within the superheated boundary layer. In nucleate boiling, a minimum in the superheat develops on the lower parts of the wall that can be related to additional evaporation into the bubbles sliding upwards in close contact with the heated wall. In film boiling and supercritical free convection, a slight maximum superheat is discovered on the lower parts of the wall, the relative size of which increases close to the critical point, while it does not exist in far sub-critical free convection.
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- Original title: Ebullitión libre nucleada, ebullición pelicular y convección libre monofásica a presiones próximas al estado crítico. II. Variación circunferencial del sobrecalentamiento de la pared para un cilindro horizontal de cobre de 25 mm.
- Record ID : 30002663
- Languages: Spanish
- Source: Frío Calor Aire acondicionado - vol. 39 - n. 438
- Publication date: 2011/07
Links
- See translations: Ebullitión libre nucleada, ebullición pelicular y convección libre monofásica a presiones próximas al estado crítico. IB. Transmisión integral de calor de la superficie externa de cilindros horizontales de cobre a refrigerantes en convección libre monofásica y comparación con ebullición nucleada y pelicular.
Nucleate pool boiling, film boiling and single-phase free convection at pressures up to the critical state. I. Integral heat transfer for horizontal copper cylinders.
Nucleate pool boiling, film boiling and single-phase free convection at pressures up to the critical state. II. Circumferential variation of the wall superheat for a horizontal 25 mm copper cylinder.
Ebullitión libre nucleada, ebullición pelicular y convección libre monofásica a presiones próximas al estado crítico. IA. Transmisión integral de calor de la superficie externa de cilindros horizontales de cobre a refrigerantes en ebullición nucleada y pelicular.
See other articles in this issue (4)
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Indexing
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Themes:
Heat transfer;
Mass transfer - Keywords: Pool boiling; Free convection; Film boiling; Copper; Heat transfer; Critical state; Horizontal cylinder; Nucleate boiling
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Nucleate pool boiling, film boiling and single-...
- Author(s) : GORENFLO D., BAUMHÖGGER E., WINDMANN T., et al.
- Date : 2010/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 7
- Formats : PDF
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Ebullitión libre nucleada, ebullición pelicular...
- Author(s) : GORENFLO D., BAUMHÖGGER E., WINDMANN T., et al.
- Date : 2011/05
- Languages : Spanish
- Source: Frío Calor Aire acondicionado - vol. 39 - n. 436
- Formats : PDF
View record
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Nucleate pool boiling, film boiling and single-...
- Author(s) : GORENFLO D., BAUMHÖGGER E., WINDMANN T., et al.
- Date : 2010/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 7
- Formats : PDF
View record
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Ebullitión libre nucleada, ebullición pelicular...
- Author(s) : GORENFLO D., BAUMHÖGGER E., WINDMANN T., et al.
- Date : 2011/06
- Languages : Spanish
- Source: Frío Calor Aire acondicionado - vol. 39 - n. 437
- Formats : PDF
View record
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THEORY OF FILM BOILING OF HELIUM II.
- Author(s) : LABUNTSOV D. A., AMETISTOV E. V.
- Date : 1982
- Languages : Russian
- Source: Teploenergetika - n. 3
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