图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
强化传热期刊
影响因子: 0.562 5年影响因子: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

ISSN 打印: 1065-5131
ISSN 在线: 1026-5511

强化传热期刊

DOI: 10.1615/JEnhHeatTransf.2012006001
pages 515-525

CONVECTIVE CONDENSATION OF R410A IN MICRO-FIN TUBES

Guan-min Zhang
School of Energy and Power Engineering, Shandong University, Jinan 250061, People's Republic of China
Zan Wu
Department of Energy Sciences, Lund University, P.O. Box 118, Lund, SE-22100, Sweden
Xu Wang
Department of Energy Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Wei Li
Department of Energy Engineering, Collaborative Innovation Center of Advanced Aero-Engine, Zhejiang University, 38 Zhe Da Rd. Xihu District, Hangzhou 310027, China

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.


Articles with similar content:

CONDENSATION HEAT TRANSFER OF R-134A ON SINGLE HORIZONTAL THREE-DIMENSIONAL STRUCTURED TUBES
International Heat Transfer Conference 16, Vol.7, 2018, issue
Stephan Kabelac, Ruben Steinhoff, X. Luo
Augmentation of Forced Convection Condensation Heat Transfer Inside a Horizontal Tube Using Spiral Spring Inserts
Journal of Enhanced Heat Transfer, Vol.12, 2005, issue 4
M. A. Akhavan-Behabadi, Ravi Kumar, K. N. Agrawal, M. R. Salimpoor
CFD SIMULATION OF CONDENSATION INSIDE SMOOTH INCLINED TUBE AT DIFFERENT SATURATION TEMEPRATURES
International Heat Transfer Conference 16, Vol.18, 2018, issue
Josua Petrus Meyer, Seyyed Mohammad Ali Noori Rahim Abadi
Single-Phase Flow Pressure Drop and Heat Transfer Measurements in a Horizontal Microfin Tube in the Transition Regime
Journal of Enhanced Heat Transfer, Vol.16, 2009, issue 2
Yangnavalkya Mukkamala, R. Sundaresan
EVAPORATIVE HEAT TRANSFER IN HORIZONTAL TUBES WITH STREP-TYPE INSERTS USING REFRIGERANT-600A
Proceedings of Symposium on Energy Engineering in the 21st Century (SEE2000) Volume I-IV, Vol.0, 2000, issue
Kuen-Jang Jang , Shou-Shing Hsieh, Yao-Chun Tsai