Heat Transfer Coefficient from the Sheet-Piped Light-Absorbing Panels of the Flat-Plate Solar Water-Heating Collectors to the Heat Transfer Fluid in Their Heat-Removing Channels
| Autor: | R. R. Avezov, A. U. Vokhidov, N. O. Usmonov |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Renewable Energy Sustainability and the Environment 020209 energy 02 engineering and technology Mechanics Heat transfer coefficient 01 natural sciences Parallelepiped Power electronics 0103 physical sciences Heat transfer 0202 electrical engineering electronic engineering information engineering Heat transfer fluid Solar water heating Heating efficiency |
| Zdroj: | Applied Solar Energy. 54:168-172 |
| ISSN: | 1934-9424 0003-701X |
| DOI: | 10.3103/s0003701x18030040 |
| Popis: | It has been proposed to introduce a new parameter into the practice of the heat calculation and testing of the flat-plate solar water-heating collectors (FSWHCs)—the coefficient of heat transfer from the light-absorbing panel (LAP) to the heat transfer fluid in its internal heat-exchange channels (HECs) reduced to the unit area of the frontal surface of their cases. The mechanism of the formation of this parameter is studied, the design expression is derived, and a practical example of the calculation to define its value is performed. The structures of the flowing LAPs of a sheet-piped thin parallelepiped form are selected as the objects of the investigation. The reliability of the results of the investigations is proved by comparing the values of the specific (relative to the area unit of the frontal surface of the case) heating efficiency of the collector obtained based on the various formulas. |
| Databáze: | OpenAIRE |
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