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 SM ISO690:2012BOLOGA, M., GROSU, Fiodor, KOZHEVNIKOV, Igor, POLIKARPOV, Albert, MOTORIN, Oleg. Heat transfer of an evaporator–condensing system with electrohydrodynamic coolant circulation and different spatial orientation. In: Surface Engineering and Applied Electrochemistry, 2017, nr. 1(53), pp. 34-41. ISSN 1068-3755. DOI: https://doi.org/10.3103/S1068375517010045 |
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  Surface Engineering and Applied Electrochemistry |
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| Numărul 1(53) / 2017 / ISSN 1068-3755 /ISSNe 1934-8002 | ||||||
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| DOI:https://doi.org/10.3103/S1068375517010045 | ||||||
| Pag. 34-41 | ||||||
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The influence of the spatial orientation of an evaporator–condensing system (ECS) on the heat transfer coefficient is considered. As found, it varies according to the cosine law, which implies that it is at its minimum when the evaporator is in the top position, and it is at its maximum when the heater is in the bottom position. This is consistent with the physical considerations about the effect of buoyancy forces on heat transfer. The average velocity of coolant circulation through the ECS loop is found, and on this basis, the “electric” Reynolds number and heat transfer coefficient are estimated. The influence of pressure on heat transfer in the ECS has been analyzed. The considered phenomena have been physically interpreted; they agree well with the experimental data. |
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| Cuvinte-cheie electrohydrodynamic pumping, evaporation, evaporator–condensing system, heat transfer, spatial orientation |
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