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Vapordynamic thermosyphon – heat transfer two-phase device for wide applications

Vasiliev L., Vasiliev L., Zhuravlyov A., Shapovalov A., Rodin A.

Archives of Thermodynamics

2015

Vol. 36, no. 4

65--76

Vapordynamic thermosyphon (VDT) is an efficient heat transfer device. The two-phase flow generation and dynamic interaction between the liquid slugs and vapor bubbles in the annular minichannel of the VDT condenser are the main features of such thermosyphon, which allowed to increase its thermodynamic efficiency. VDT can transfer heat in horizontal position over a long distance. The condenser is nearly isothermal with the length of tens of meters. The VDT evaporators may have different forms. Some practical applications of VDT are considered.

Cu Diffusion Along Al Grain Boundaries

Dolgopolov N., Rodin A., Simanov A., Gontar I.

Polish Journal of Chemistry

2009

Vol. 83, nr 8

1507-1513

Grain bound ary dif fu sion of cop per (GBD) in aluminum was investigated by EPMA in the temperature range from 300 to 400 graduate C. The triple product s delta Dgb (s – segregation co efficient, delta – grain boundary width, Dgb – GBD coefficient) was calculated using Fisher-Gibbs solution methods – by measuring of GB copper concentration as a functional penetration depth and the contour angle (at the top of diffusion wedge). In the first case s delta Dgb = S delta Dgb = 5.1ź10–11 m3 s źexp (-102 kJ/mol RT) and in the sec ond case S delta Dgb = 1.4ź10–11 m3 s źexp(-94 kJ mol RT).

Incomplete energy deposition in long CsI(Tl) crystals

Siwek A., Budzanowski A., Czech B., Fomichev A., Gburek T., Rodin A., Skwirczyńska I., Wolski R.

Nukleonika

2002

Vol. 47, nr 4

141-145

We studied process of incomplete energy deposition in long CsI(Tl) crystals, caused by inelastic interactions of impinging nuclear fragment in the scintillating material. The secondary beam from the ACCULINNA fragment separator and the heavy-ion beam from the CELSIUS storage ring were used to measure the yield of this process as a function of the initial energy of incoming fragments. The functional fit to GEANT simulations will be used to correct the energy spectra from future experiments.