期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 30, 期 4, 页码 582-590出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2006.11.005
关键词
refrigeration; absorption system; water; lithium bromide; modelling; calculation; experiment; absorber; bundle; smooth tube
资金
- National Research Foundation of Korea [핵06A1101] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A model for absorption of water vapor into LiBr flowing over horizontal smooth tubes is developed to predict the absorption performance of a tube bundle. The performance of a horizontal smooth tube absorber is calculated and compared with experimental data. The calculation results of absorber performance are found to vary considerably depending on mass diffusivity. The literature value of mass diffusivity, of the order of 10(-9) m(2) s(-1), causes the model to deviate from the experimental results especially for solution side heat transfer coefficient. A parametric study varying mass diffusivity shows that a value of 1.0 x 10(-10) m(2) s(-1) gives a better agreement with the experimental results. The effects of absorber capacity, heat transfer coefficient of droplets ejected from the system (slinging) and number of tubes in the bundle on the absorption performance are also discussed. (C) 2006 Elsevier Ltd and IIR. All rights reserved.
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