Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Two-Phase Frictional Pressure Drop Characteristics of R410A-Oil Mixture Flow Condensation inside 4.18 mm and 1.6 mm I.D. Horizontal Smooth Tubes
Two-phase frictional pressure drop characteristics of R410A-oil mixture flow condensation inside 4.18 mm (0.165 in) and 1.6 mm (0.063 in) I.D. diameter horizontal smooth tubes were investigated experimentally. The experimental condensing temperature is 40°C (104°F), and the nominal oil concentration range is from 0% to 5%. The test results indicate that the presence of oil always decreases the flow condensation frictional pressure drop, and the decrement increases with the nominal oil concentration. The decrements for 4.18 mm (0.165 in.) and 1.6 mm (0.063 in.) are 1%~19.5% and 1.5%~17.4% tubes, respectively. A new correlation for the frictional pressure drop of R410A-oil mixture flow condensation inside smooth tubes is proposed and agrees with 96% of the experimental data within a deviation of −20%~+30%.
Two-Phase Frictional Pressure Drop Characteristics of R410A-Oil Mixture Flow Condensation inside 4.18 mm and 1.6 mm I.D. Horizontal Smooth Tubes
Two-phase frictional pressure drop characteristics of R410A-oil mixture flow condensation inside 4.18 mm (0.165 in) and 1.6 mm (0.063 in) I.D. diameter horizontal smooth tubes were investigated experimentally. The experimental condensing temperature is 40°C (104°F), and the nominal oil concentration range is from 0% to 5%. The test results indicate that the presence of oil always decreases the flow condensation frictional pressure drop, and the decrement increases with the nominal oil concentration. The decrements for 4.18 mm (0.165 in.) and 1.6 mm (0.063 in.) are 1%~19.5% and 1.5%~17.4% tubes, respectively. A new correlation for the frictional pressure drop of R410A-oil mixture flow condensation inside smooth tubes is proposed and agrees with 96% of the experimental data within a deviation of −20%~+30%.
Two-Phase Frictional Pressure Drop Characteristics of R410A-Oil Mixture Flow Condensation inside 4.18 mm and 1.6 mm I.D. Horizontal Smooth Tubes
Huang, Xiangchao (Autor:in) / Ding, Guoliang (Autor:in) / Hu, Haitao (Autor:in) / Zhu, Yu (Autor:in) / Gao, Yifeng (Autor:in) / Deng, Bin (Autor:in)
HVAC&R Research ; 16 ; 453-470
01.07.2010
18 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Condensation Heat Transfer Inside Smooth Horizontal Tubes for R-22 and R-32/125 Mixture
| Taylor & Francis Verlag | 1996
| Taylor & Francis Verlag | 2009
Condensation of Halogenated Refrigerants Inside Smooth Tubes
| Taylor & Francis Verlag | 2002
A General Pressure Drop Correlation for Condensation Inside Internally Finned Tubes
| British Library Conference Proceedings | 1990
Empirical Modeling of Stratified-Wavy Flow Condensation Heat Transfer in Smooth Horizontal Tubes
| British Library Conference Proceedings | 1996