Convective Condensation of R410A in Micro-Fin Tubes
(2012) In Journal of Enhanced Heat Transfer 19(6).- Abstract
- An experimental investigation was performed for convective condensation ofR410A inside five micro-fin tubes with the same outer diameter of 5 mm and helix angle of 18°. Data are for mass fluxes ranging from about 180 to 650 kg/m2 s. The nominal saturation temperature is 320 K, with inlet and outlet qualities of 0.8 and 0.1, respectively. The results suggest that tube 4 has the best thermal performance for its largest condensation heat-transfer coefficient and relatively low pressure-drop penalty. The heat-transfer enhancement mechanism is mainly due to the surface area increase over the plain tube at large mass fluxes, while liquid drainage and interfacial turbulence play important roles in heat-transfer enhancement at low mass fluxes. In... (More)
- An experimental investigation was performed for convective condensation ofR410A inside five micro-fin tubes with the same outer diameter of 5 mm and helix angle of 18°. Data are for mass fluxes ranging from about 180 to 650 kg/m2 s. The nominal saturation temperature is 320 K, with inlet and outlet qualities of 0.8 and 0.1, respectively. The results suggest that tube 4 has the best thermal performance for its largest condensation heat-transfer coefficient and relatively low pressure-drop penalty. The heat-transfer enhancement mechanism is mainly due to the surface area increase over the plain tube at large mass fluxes, while liquid drainage and interfacial turbulence play important roles in heat-transfer enhancement at low mass fluxes. In addition, the experimental data were analyzed using seven existing pressure-drop and four heat-transfer models to verify their respective accuracies. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4285396
- author
- Zhang, Guan-min ; Wu, Zan LU ; Wang, Xu and Li, Wei
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Enhanced Heat Transfer
- volume
- 19
- issue
- 6
- publisher
- Begell House
- external identifiers
-
- scopus:84870907406
- ISSN
- 1563-5074
- DOI
- 10.1615/JEnhHeatTransf.2012006001
- language
- English
- LU publication?
- yes
- id
- 8f6d30af-4774-42de-a3eb-46eeeaf4c59a (old id 4285396)
- alternative location
- http://www.dl.begellhouse.com/journals/4c8f5faa331b09ea,606abcbf1d8212d4,68a498714d2d4bf7.html
- date added to LUP
- 2016-04-01 10:43:53
- date last changed
- 2022-01-26 01:58:27
@article{8f6d30af-4774-42de-a3eb-46eeeaf4c59a,
abstract = {{An experimental investigation was performed for convective condensation ofR410A inside five micro-fin tubes with the same outer diameter of 5 mm and helix angle of 18°. Data are for mass fluxes ranging from about 180 to 650 kg/m2 s. The nominal saturation temperature is 320 K, with inlet and outlet qualities of 0.8 and 0.1, respectively. The results suggest that tube 4 has the best thermal performance for its largest condensation heat-transfer coefficient and relatively low pressure-drop penalty. The heat-transfer enhancement mechanism is mainly due to the surface area increase over the plain tube at large mass fluxes, while liquid drainage and interfacial turbulence play important roles in heat-transfer enhancement at low mass fluxes. In addition, the experimental data were analyzed using seven existing pressure-drop and four heat-transfer models to verify their respective accuracies.}},
author = {{Zhang, Guan-min and Wu, Zan and Wang, Xu and Li, Wei}},
issn = {{1563-5074}},
language = {{eng}},
number = {{6}},
publisher = {{Begell House}},
series = {{Journal of Enhanced Heat Transfer}},
title = {{Convective Condensation of R410A in Micro-Fin Tubes}},
url = {{http://dx.doi.org/10.1615/JEnhHeatTransf.2012006001}},
doi = {{10.1615/JEnhHeatTransf.2012006001}},
volume = {{19}},
year = {{2012}},
}