The article describes a method for obtaining the functions
of energy and accumulation wind periods, using
the program Microsoft Office Excel. We have showed
the algorithm of the programs that had been developed
to reduce the processing time for large quantities of
data. Obtained functions are recommended for determining
the optimal parameters of autonomous windpower
stations with accumulated reserve
This article cites the data about the amount and
productive capacity of oil producing enterprises in the
Russian Federation on the whole, as well as in
Krasnodar region and the Republic of Adygeya. It is
shown, that innovations in the field of waste disposal
and waste recycling left after oil production are the
most effective, as they contribute to the cost reduction
on disposal of waste on landfill and thus, improve
environment considerably. They also provide
additional revenue from the sale of new products,
received after waste recycling. The authors examined
literature data on compositional and chemical analysis
of waste left after cleaning main oil-bearing crops,
processed by oil-producing industry of the Russian
Federation (such as sunflower, rape, soy-beans) . The
analysis of available technologies of their disposal,
such as waste incineration, pyrolysis, worm
composting, landfilling, biothermal composting,
granulationa of waste and the processing of undersow
is submitted to your attention. The analysis of
advantages and disadvantages of all available
technologies was carried out, and it was noticed that
neither of available technologies had become common
use. The most prospective direction for the
development of efficient technology of waste recycling
has been chosen, which includes the use of waste
pressing after their rational preparation and isolation of
uniform and valuable components. It is shown, that the
primary task for the development of such technology is
the study of waste composition of raw materials and
industrial cleaning of sunflower seeds, soy-beans, and
modern sorts of rape and its hybrids
The article reveals the basic principle of stabilizing
the DC voltage, providing automatic control of
electrical devices and electrical equipment, control
systems, control and protection, etc. There are
functional diagrams (operated and promising) of DC
voltage stabilization with a device included in the
input and output power circuits of the rectifier, and a
new structural solution to a functional circuit of the
rectifier made of two controllable power electronic
devices and transformer with midpoint. The article
lists peculiarities of the circuits of the voltage
regulators and their main advantages and
disadvantages. We have reviewed functional
diagrams of existing and new solutions of the
stabilizers and the characteristics of their work; it
will increase the effectiveness of pre-project works
on the development of stabilizers of the DC voltage
with improved performance characteristics. This
article might be useful for post-graduates and
research workers who are involved in the
development of DC voltage stabilizers
Improvement is offered for working bodies’ forms in
devices for preparation of forages by methods of
engineering geometry and computer graphics. That
opens not only great opportunities for intensification,
increase in productivity and efficiency of the
technological processes, but also opens ways for
creation of small-sized devices for their realization.
Constructive study of geometry of working bodies
surface, allows us to give wavy movement to particles
of forage and impart them the movement with bigger
power consumption. In such installations forage
particles components, meeting walls of working body,
change their direction and, meeting other portions of
particles of forage components, mix up. From loading
to unloading, throughout the installations working
body length, flexible and strong waves of forage
particles components movement inside the working
body are born. The conducted pilot studies have
shown that as a result of working bodies’ forms
improvement of devices for preparation of forages by
methods of descriptive geometry such devices can be
implemented in a variety of industries
Waterflooding helps in the recovery of great amount of
oil that would have otherwise been abandoned in the
reservoir that is depleted. A reservoir in the Niger
Delta, Reservoir X has been used to illustrate this.
Reservoir X had oil initially in place as 7.345 MMSTB
and was produced for some time with the reservoir
natural energy. The remaining oil in the reservoir as at
the time that the natural energy of the reservoir was no
more sufficient to produce oil was 2.96MMSTB. The
reservoir has been left as depleted reservoir with the
remaining oil in it. But from the analysis conducted in
this work it is seen that if secondary oil recovery
project by waterflooding is embarked on the reservoir,
part of the remaining abandoned oil would be
recovered. With the specifications given, about
1.22MMSTB of the 2.96MMSTB of oil in reservoir X
would be produced as at the breakthrough time of 580
days. Moreover, considering the economic aspect of
the project, reservoir X and is good to be invested in.
From the NPV calculations performed, it is seen that
the NPV of reservoir X at discount rate of 10% is
$4.13 million
The article identifies the unknown parameters of the transfer functions of governing and operating channels of the control object. To do this, we have carried out processing of results of experiments. It is shown that there is not only dynamic but also static nonlinearity of the control object, expressed in physically less persistence processes increase the pressure by increasing the opening of the steam regulating valve compared with the opposite processes
The article considers the model of granulometric
composition of foundry dust. We used the method of
particle size analysis, which is based on the dependence
between the size and the velocity of a body under the
action of gravitational or centrifugal forces.
Determination of granulometric composition of the given
sample of powder was made using the laser diffraction
method, implemented on a laser particle analyzer, Fritsch
NanoTec “ANALISETTE 22”. A model of dust particle
size distribution has been obtained
Now in different branches of the industry there is a need for the new equipment and mechanisms with the seized characteristics. Special requirements are shown to energetic and mass-dimensional indices of systems of electric drives as one of the main components of such devices. Mass-dimensional and energetic indices due to constructional features and the used management system will allow improving use of special or controlled asynchronous cascade systems of an electric actuator of cylindrical construction. One of the main difficulties is simulation and design of special systems of the electric drive. In this article, a new approach to determination of magnetic model parameters of the stator of a component of the controlled asynchronous cascade electrical drive of cylindrical construction is offered
The object of the study is bored piles and their joint
work with clay soils. The analysis of the field of static
tests of bored piles, arranged by continuous flight auger
technology (CFA), was carried out by repeated loading.
Curve of settlement and the rate of its development
from the applied force was obtained. Linear relationship
reducing the amount of settlement in the second cycle
from residual displacements after unloading pile on the
first cycle was found. There was a relationship
increment of settlements in the second cycle from the
involvement of the bottom end in the work
Analytical research results of contact forces of interaction of concentrated forages components’ particles in their movement in relative screw drums are presented. It is shown that contact forces – the most difficult forces by their nature; result from stochastic (probable) collision of bulks particles and in particular of concentrated forages components’ particles. Therefore the main objective of this modeling – to describe the stochastic phenomena of the so-called conditional contacts of particles for which some assumptions are accepted, for example, in forcing of mass of concentrated forages components’ particles by the walls of the rotating relative screw drum in the radial direction there will simultaneously arise contacts caused by geometry of a screw drum, i.e. the property of its walls is pressure transfer in relation to the mass of particles in the direction of the modeled movement. Schemes of engagement of concentrated forages components’ particles contacting in the relative screw drum, the probable schedule of sliding speeds values change in their consecutive contacting, their density distribution are demonstrated