Non-iterative condensation modeling for steam condensation with non-condensable gas in a vertical tube |
| |
Authors: | Hee Cheon NoHyun Sik Park |
| |
Affiliation: | a Department of Nuclear Engineering, Korea Advanced Institute of Science and Technology, 371-1 Kusong Dong, Yusong, Taejon 305-701, Republic of Korea b Thermal Hydraulics Safety Research Team, Korea Atomic Energy Research Institute, P.O. Box 105, Yusong, Taejon 305-600, Republic of Korea |
| |
Abstract: | Based on a heat and mass transfer analogy, an iterative condensation model for steam condensation in the presence of a non-condensable gas in a vertical tube is proposed including the high mass transfer effect, entrance effect, and interfacial waviness effect on condensation. A non-iterative condensation model is proposed for easy engineering application using the iterative condensation model and the assumption of the same profile of the steam mass fraction as that of the gas temperature in the gas film boundary layer. It turns out that the Nusselt number for condensation heat transfer is expressed in terms of air mass fraction, Jakob number, Stanton number for mass transfer, gas mixture Reynolds number, gas Prandtl number and condensate film Nusselt number. The comparison shows that the non-iterative condensation model reasonably well predicts the experimental data of Park, Siddique, and Kuhn. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|