Formulation of film theory equations for modeling of condensation of steam-air mixtures in a shell and tube condenser

Yousef Haseli, Ibrahim Dincer, Greg F. Naterer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Through development of the fundamental equations of Film Theory, condensation of steam in the presence of air in a horizontal counter-current shell and one-path tube condenser is modeled. The interaction between heat and mass transfer and hydrodynamics in the shell-side is taken into consideration. A comparison between the predictions of the model and a set of experimental data available in the archival literature indicates excellent accuracy of the new formulation. The accuracy of the method is further validated by generating profiles of the temperature and pressure drops of the gas flow through the baffles, at various air leakages. Additionally, the effects of air leakage and upstream cooling water temperature are investigated to determine how they influence the total condensation rate, shell-side gas temperature and pressure drops. The results show that the total condensation rate decreases 5% and 20.5% for an air leakage of 1% and 5%, respectively, compared to the situation of pure vapor. Also, increasing the inlet cooling water temperature from 46.5°C to 48.5 C leads to 16.2% reduction in the total condensation rate, i.e., 8.1% per °C. However, this ratio is higher at high temperatures. For example, as the cooling water temperature rises from 50°C to 51 °C under identical process conditions, the total condensation rate decreases 11.7% (per°C).

Original languageEnglish
Title of host publication2008 Proceedings of the ASME Summer Heat Transfer Conference, HT 2008
Pages289-297
Number of pages9
StatePublished - 2009
Event2008 ASME Summer Heat Transfer Conference, HT 2008 - Jacksonville, FL, United States
Duration: Aug 10 2008Aug 14 2008

Publication series

Name2008 Proceedings of the ASME Summer Heat Transfer Conference, HT 2008
Volume2

Conference

Conference2008 ASME Summer Heat Transfer Conference, HT 2008
Country/TerritoryUnited States
CityJacksonville, FL
Period08/10/0808/14/08

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