Desorption of Aqueous Solution of Lithium Bromide on Enhanced Surfaces in a Single-Stage Lithium-Bromide Absorption Chiller
| Autor: | K. Stepanov, D. Mukhin, N. N. Zubkov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Materials science Aqueous solution Lithium bromide Condensation Analytical chemistry Energy Engineering and Power Technology 02 engineering and technology Heat transfer coefficient Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Fin (extended surface) law.invention chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering chemistry law Modeling and Simulation Desorption Boiling 0103 physical sciences Absorption refrigerator |
| Zdroj: | Journal of Engineering Thermophysics. 28:529-537 |
| ISSN: | 1990-5432 1810-2328 |
| Popis: | This article presents values of heat transfer coefficients at pool boiling of aqueous solution of lithium bromide on smooth and fin tubes. The experimental studies were performed under conditions typical of absorption chiller with single-stage desorption. More exactly, the condensation pressure was about 7.8–8.5 kPa, and the concentration of lithium bromide solution was 60–61 wt%. The outer diameter of the smooth and fin tubes was 16.0 mm; the inner diameter was 12.0 mm. The surface roughness factor of the fin tubes ranged from 2.7 to 6.0. The studies have shown that for fin tubes the heat transfer coefficient reduced to a surface unit is up to 30 percent higher as compared with a smooth tube. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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