Crystal Ice Formation of Solution and Its Removal Phenomena at Cooled Horizontal Solid Surface
| Autor: | Koji Nagasaka, Mitsutoshi Kato, Tetsuo Hirata, Masaaki Ishikawa |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
Buoyancy Physics::Instrumentation and Detectors Cold storage chemistry.chemical_element engineering.material Physics::Geophysics Physics::Fluid Dynamics Crystal chemistry.chemical_compound Defrosting Latent heat Thermal Composite material Acrylic resin Physics::Atmospheric and Oceanic Physics Fluid Flow and Transfer Processes Mechanical Engineering Condensed Matter Physics Copper Polyvinyl chloride chemistry Heat flux visual_art Heat transfer Amorphous ice visual_art.visual_art_medium engineering Astrophysics::Earth and Planetary Astrophysics |
| Zdroj: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 65:2482-2488 |
| ISSN: | 1884-8346 0387-5016 |
| DOI: | 10.1299/kikaib.65.2482 |
| Popis: | Experimental studies for crystal ice formation and its removal phenomena of ethylene glycol solution on a cooled horizontal plate have been performed. Onset condition for ice removal phenomenon is examined experimentally as well as analytically. As a cooled plate, a glass, an acrylic resin, a polyvinyl chloride, a silicone resin and the copper plates are used. It is found that the removal or unremoval of crystal ice is related to the heat flux at the cooled plate surface when the latent heat of freezing is discharged with ice formation, and that the heat flux ratio, q2/q1, is an important parameter of the onset condition for ice removal, where q1 represents the heat flux from the plate surface to the cooled plate and q2 represents the heat flux from the plate surface to the solution. It is also found that the occurrence of ice removal phenomenon is easier in the case of plastic cooling plates than that of metal ones. |
| Databáze: | OpenAIRE |
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