首页 | 本学科首页   官方微博 | 高级检索  
     


Pool boiling of ammonia/water and its pure components: Comparison of experimental data in the literature with the predictions of standard correlations
Authors:Francisco Tboas  Manel Valls  Mahmoud Bourouis  Alberto Coronas
Affiliation:aUniversitat Rovira i Virgili (URV), Av. Països Catalans, 26, 43007 Tarragona, Spain
Abstract:Although ammonia/water has been used for decades as a working pair in absorption cycles for industrial refrigeration, very limited data are available on boiling heat transfer of this mixture. The intention of this work is to carry out a bibliographic revision of the information available in the open literature about nucleate pool boiling of the ammonia/water mixture and its pure components. The experimental data have been compared with existing prediction correlations for the pure components and also for their mixtures.For water, all the pure component pool boiling correlations gave similar predictions and were in good agreement with experimental data. For ammonia the prediction of the correlation and the experimental data showed more differences.At a given heat flux, the experimental data show that the mixture pool boiling heat transfer coefficient is lower than that obtained with pure components. Three of the well-known correlations for mixtures were compared against the experimental data. None of these correlations provided a good prediction of the mixture pool boiling heat transfer coefficient over a wide range of mass fraction. Furthermore, a new correlation has been proposed.
Keywords:Absorption system  Ammonia/water  Pool boiling  Survey  Experiment  Comparison  Correlation  Heat transfer coefficientMots clé  s: Systè  me à  absorption  Ammoniac-eau  É  bullition libre  Enquê  te  Expé  rimentation  Comparaison  Corré  lation  Coefficient de transfert de chaleur
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号