Boiling heat transfer in vertical minichannels. Liquid crystal experiments and numerical investigations |
| |
| Authors: | Sylwia Hozejowska Magdalena Piasecka Mieczyslaw E. Poniewski |
| |
| Affiliation: | 1. Conservatoire National des Arts et Métiers, Laboratoire de Mécanique des Structures et des Systèmes Couplés, F-75003 Paris, France;2. Department of Mathematics, University Paris-Sud, Bât. 425, Orsay Cedex F-91405, France;3. Beijing Computational Science Research Center, Zhanggguancun Software Park II, Haidian District, Beijing 100094, China;4. Institut National des Sciences Appliquées de Lyon, Centre d’Énergétique et de Thermique de Lyon (UMR 5008), Campus La Doua-LyonTech, Villeurbanne Cedex 69621, France;5. Department of Mathematics, Faculty of Sciences of Tunis, University of Tunis El Manar, 2092 Tunis, Tunisia |
| |
| Abstract: | The paper presents the results of experimental and numerical studies of boiling heat transfer in the flow of refrigerants R123 and R11 through vertical, rectangular minichannels, with one wall heated. An application of liquid crystal thermography has helped detect two-dimensional temperature distribution on the heating surface, allowing determination of boiling heat fluxes and experimental boiling curves. The main objectives of the paper included the development of two-dimensional approach to solve the inverse heat conduction boundary problem for determining local values of internal heating surface temperature, boiling heat flux and heat transfer coefficient, and the improvement of the applied numerical method making use of the equalizing calculus and heating surface temperature measurement errors. A detailed discussion of temperature, heat flux and heat transfer coefficient errors is also provided. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
