A NUMERICAL SIMULATION OF STEAM ABSORPTION BY WAVY FALLING FILM OF LiBr AQUEOUS SOLUTION

摘要：

In an absorption chiller, the performance of the absorber governs the system performance. Falling films of an absorbent are used in many systems. The absorption of vapor occurs at the vapor-liquid interface and its absorption rate is affected by the interface behavior. A numerical simulation of steam absorption by LiBr aqueous solution is carried out in the present study. Since diffusion coefficient of water into LiBr aqueous solution is very small, convection effects induced by surface waves enhance the absorption. The numerical simulation shows the transport of water absorbed at the interface into LiBr aqueous solution, where a wavy film of the LiBr aqueous solution is falling on a vertical cooling wall. Distributions of temperature and concentration in the film are given.

作者: A.MIYARA M.A.ISLAM

作者单位: Department of Mechanical Engineering, Saga University 1 Honjomachi, Saga-shi, 840-8502, Japan Graduate School of Science and Engineering, Saga University 1 Honjomachi, Saga-shi, 840-8502, Japan

会议类型: 国际会议

会议名称: The 22nd International Congress of Refrigeration(第22届国际制冷大会)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-21（万方平台首次上网日期，不代表论文的发表时间）