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SM ISO690:2012 BOLOGA, M., GROSU, Fiodor, KOZHEVNIKOV, Igor, MOTORIN, Oleg, POLIKARPOV, Albert. Influence of space orientation of evaporative-condensing system on heat transfer. In: Materials Science and Condensed Matter Physics, Ed. 8-th Edition, 12-16 septembrie 2016, Chişinău. Chişinău: Institutul de Fizică Aplicată, 2016, Editia 8, p. 332. ISBN 978-9975-9787-1-2. |
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Materials Science and Condensed Matter Physics Editia 8, 2016 |
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Conferința "International Conference on Materials Science and Condensed Matter Physics" 8-th Edition, Chişinău, Moldova, 12-16 septembrie 2016 | ||||||
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Pag. 332-332 | ||||||
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The performance of evaporative condensing system (ECS) with built-in small electrohydrodynamic pump (EHDP) at various working conditions and peculiarities of heat- and mass transfer in it were studied in [1]. This work, being a natural continuation of previous research, presents the results concerning the influence of space orientation of ECS on heat transfer coefficient α in the evaporator and deriving the relation for its quantitative estimation as a function of angle φ , characterizing the position of ECS in space, α ( φ ). ECS represents a closed rectangular loop (Fig. 1). The evaporator and vapor condenser are built-in in parallel to each other in two opposite branches. The EHDP is built in the third branch while the forth branch is used as a heat conducting channel (AB), connecting the evaporator and the condenser. The hear carrier (n-hexane) is pumped by EHDP in the direction from A to B (Fig. 1). The position of the loop in space is defined by the rotation angle φ relative to the axis perpendicular to the loop plane. It is measured from a vertical vector g (0<φ <2 π ) in a clockwise direction. The initial position of ECS, φ =0, is shown in Fig. 1. Heat transfer coefficient was found experimentally for three positions of the ECS (φ =0; π /2; π ) as it is shown in Fig. 2. The input power and the current were 48.5 W and 3.12 μА, respectively. Each point on the graph represents the average value of several measurements. |
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