Refrigeration engineering and technology

4 - 11

Authors: V.P. Zhelezny; А.V. Melnik

Description the experimental unit for investigation of boiling process for the refrigerant/oil solution in tube is presented in the paper. The information about heat transfer coefficient averaged over cross section of the tube, local heat transfer coefficient and oil concentra-tions in R-600a at the various void fraction of the working fluid in evaporator have been obtained. The experimental data obtained have been analyzed.

19 - 23

Authors: I.V. Sekachev; V.А. Mazur

Fractal model of microfractures in the walls of cooled vacuum vessels for experimental thermonuclear reactor was considered. Pressure losses for fluid flow through microchannel network were estimated. Physical mecha-nism of cooling fluid penetration via hypothetic slits and cracks generating tree-structured microchannel net-work is described by the linear non-equilibrium thermodynamic relationships at the given pressure drop on the vessel walls. Computer fluid dynamics approach for homogeneous equilibrium model was applied to calculate the isothermal fluid flow.

31 - 36

Authors: E.A. Smotrov; D.V. Vershinin; D.Y. Sheyko

The drive liquid cooling issue research results are given. An assessment of the cooling cost effec-tiveness was executed. The cooling circuits and modes of operation were substantiated, tempera-ture control unit was described.

41 - 50

Authors: L.F. Smirnov

A new approach is proposed to the use of daily and seasonal air temperature minor difference as well as solar energy for the year-round electricity generation. underground heat and cold accumulators that allow to extend the temperature range for thermal power cycle and self-circulation coolants for heat-supply in the evaporator-condenser heat powered installation are used. The new technology is applicable to power plants with 100 ÷ 1000 kW capacity and is especially suitable for the production of electricity in the rural areas, which are distant from the centralized networks of electricity and gas supply.

61 - 66

Authors: Yu.A. Kozonova

One of the modern food industry development streams is the functional products’ production. Sci-entific justification of their design is given in the study. The increase assortment opportunity of functional juicy beverages is represented. It is offered to add an energetic compound to the juices. For this purpose the grain-growing and bean flour is used.

71 - 81

Authors: L.F. Smirnov

The AGROENERGYCOMPLEX (AEC), in which new technology of year-round cultivation and processing of ecologically pure fruit and vegetable raw materials (FVM), is proposed. AEC when implemented in stand-alone greenhouses producing clean (kosher) products – in the changed ground, without the use of mineral fertilizers and synthetic salt mixes hydroponic technology, without watering plants with polluted water, GMO free. AEC grows year – round irrigation of net melt water, lightened be deuterium and sets mode heat - humidity, harvest meets at least 3 times a year. FOS is sorted and the part that has the subsistence for trade counter "not-selling" look "is directly and im-mediately near the site of" lossless aromatics and palatability - dehydrated by freezing. From juices the 40 ÷ 60% liquid concentrates, dry soluble powders and melt water for beverage production are produced, from the husks of FOS-dry insoluble powders. AEC do not consume "from outside" to grow and for processing of FVM or gas, no electricity, no water, no fuel for cars. Uses only internal resources – rain water, as well as the local water, which cleans itself by freeze-out, daily and seasonal temperature difference between the air and the sun's energy. AEC provides for heating and thermal stabilization of greenhouses, work their own power plants and complex on processing FVM heat accumulators phase transition on the roofs of green-houses and underground heat and cold accumulators. Application of new technology of AEC was reviewed at greenhouses squares 10 and 20 ha with harvest of 2548 and 5860 t FVM /year respectively. AEC are especially suitable for areas distant from the cen-tralized electricity and gas supply and is preferred in areas with extremely continental climate.

90 - 94

Authors: G.N. Vostrov; A. Atie; K.A. Levenets

Article contains description of random process in context of applying to models of real world processes. Especial attention is spared on condition`s complex and its connection to regularity. The key limitations in formal definition of random process usage for real data analysis problem are highlighted.

99 - 102

Authors: V.А. Кrisilov; Saleh Alaswad

The three-level model of the educational process, which is differentiated by the constituents such as subject area, granulation educational information, the schedule of the learning process is considered. Also the four-level model, intended for adaptation of the learning material to student educational process dynamics is examined.