Numerical modelling and performance analysis of falling film absorption under rolling conditions

GAO Hong-tao; HE Ming-yue

doi:10.16411/j.cnki.issn1006-7736.2016.04.013

Journal of Dalian Maritime University >

2016 , Vol. 42 >Issue 4: 79 - 83

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2016.04.013

Numerical modelling and performance analysis of falling film absorption under rolling conditions

GAO Hong-tao ,
HE Ming-yue

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(Institute of Refrigeration & Cryogenics Engineering,Dalian Maritime University, Dalian 116026, China)

Received date: 2016-04-27

Revised date: 2016-07-22

Online published: 2016-07-22

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Abstract

According to the characteristics of falling film absorption in the vertical tube, a numerical model was established. By using numerical simulation, the velocity, temperature and concentration distribution of film under different rolling periods and rolling amplitudes conditions were calculated, as well as the variation of heat flux and mass flux. Simulation results show that the rolling changes the standing time of liquid film in the absorber and the velocity distribution in the falling film. As compared to stationary state, a large rolling period enhances the absorption process, while a small one is on the contrary.

Key words： absorption refrigeration; falling film absorption; rolling; heat and mass transfer; numerical simulation

Cite this article

GAO Hong-tao , HE Ming-yue . Numerical modelling and performance analysis of falling film absorption under rolling conditions[J]. Journal of Dalian Maritime University, 2016 , 42(4) : 79 -83 . DOI: 10.16411/j.cnki.issn1006-7736.2016.04.013

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