Experimental study on energy conversion in static flash evaporation of aqueous NaCl solution
| Autor: | Ting Liang, Dan Zhang, Junjie Yan, Qingzhong Yang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Aqueous solution Mechanical Engineering General Chemical Engineering Energy conversion efficiency Evaporation Analytical chemistry Flash evaporation 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology 01 natural sciences 010305 fluids & plasmas law.invention Superheating law Latent heat 0103 physical sciences Energy transformation General Materials Science Crystallization 0210 nano-technology Water Science and Technology |
| Zdroj: | Desalination. 430:56-63 |
| ISSN: | 0011-9164 |
| DOI: | 10.1016/j.desal.2017.12.051 |
| Popis: | Energy conversion during static flash of aqueous NaCl solution was analyzed on the basis of experiments with an initial waterfilm concentration ranging from 0 to 0.26 (saturated at room temperature), initial height from 0.1 m to 0.4 m, and superheat from 1.8 K to 55.9 K. In the energy released from superheated waterfilm, the present study focused on the portion that transformed into the latent heat of flash steam; this fraction of the total released energy was defined as energy conversion efficiency (ECE). Results suggested that ECE highly depended on both evaporation and steam-carrying effect. Second, ECE decreased monotonically with rising initial height of waterfilm in both non-crystallization and crystallization regions. Finally, with rising superheat or initial concentration of waterfilm, ECE decreased within the non-crystallization region but increased within the crystallization region. |
| Databáze: | OpenAIRE |
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