Water calculations with an account of quests of water users and water consumers with the supply situation 50, 75, 95 % were done and their results on whole water complex on the branches of economics.
The calculation of water-supply installations of ma-nure columns is presented in this article. The characte-ristics of commercially available pumps are given. The constructive features of pumps for liquids with solid inclusions are described
Problems concerning energy saving become more urgent in the connection with permanent increasing of electricity price and enactment of the law regarding energy efficiency and energy saving. Regulated electric drive has been using widely for energy saving within pumping plant. Appropriate equations were carried out for adequate regulation of technology process of water travel and energy supplying. The analysis of criterion function for optimization and efficiency factor for specific elements as well as whole system makes it possible to find out the optimal system parameters and define energy saving work conditions
The role of transport in agricultural production
is considerable. It is a connecting link in a
single technological chain of the agroindustrial
complex of the country (RF AIC). In
intraeconomic transportation in the RF AIC,
along with cars, we widely use tractors.
Rational application of wheeled tractors in
intraeconomic carriage substantiates the
possibility of their movements both on
asphalted and dirt roads. A specific share of
tractor transport in domestic agriculture
amounts 22-27% of the total transport
transportations and 50-60% of intraeconomic
carriage. There is a high level of the usage of
tractor transport in Western European countries
and in the United States. In farms of leading
Western European countries (Germany, Italy,
France and others.) there is about 70-90% of
intraeconomic carriage performed by tractor
transport. One of the most substantial and
difficult tasks is to fight with damage and losses
of agricultural production, in which a very
responsible role has been assigned to
automobile and tractor transport as an important
link in the AIC. According to the analysis of
materials for the preparation and use of potatoes and apples, more than 15-20% of the products
do not reach the consumer. Low quality of the
use of vehicles during transportation is a
problem. Transport costs in the prime cost of
produced products in rural areas reach 30-40%
or more. Lowering them will further influence
the development of the agroindustrial complex.
Thus, the creation of new of scientifically
grounded decisions in designs of vehicles for
intraeconomic carriage that enhance
preservation and performance of potato
harvesting and apples in the conditions of
Russia's AIC is the actual scientific and
technical task. Its solution makes a significant
contribution to the development of the country,
as well as it contributes to the implementation
of breakeven, competitive manufacture
Features of technical and economic problems of mass use of solar power stations on photo-electric converters and features of possible ways of reduction of the influence of negative factors of the described problems are shown in this article
The article presents an estimation of productivity in Russian beekeeping, honey pitching profitability calculation, the results of finding the optimal solution for the first level of automation and mechanization of operations
The article deals with studying the ways of optimizing
the amount of chemical additives in the wood-concrete
material, i.e. arbolite, which contains foamed
polystyrene gravel aggregate. To make arbolite
honeycombed structure more conglomerated a nonreactive
aggregate, i.e. hogged chips, has been partially
replaced with foamed polystyrene gravel aggregate
which has a mean particle size equal to a concrete
pocket size. The article also deals with various
additives to be used, taking into account the nonreactive
aggregate type and its quality, the composite
density and its reinforcement level. All chemical
additives have been chosen to make the initial material
more porous, to produce a film covering the aggregate
surface and to speed up the process of concrete
hardening. To solve to above problems a series of
experiments was carried out, the latter studied various
combinations of factors changing at certain levels. The
results of studying the foamed polystyrene gravel
aggregate influence on the arbolite structure and its
characteristics were used to make a choice of the
arbolite composition. The main criterion of the optimal
amount of chemical additives has been considered the
arbolite strength. The experimental data processing has
resulted in the finite regression model which describes
the chemical additive amount influence on the arbolite
strength. The tables in the article show the levels of
technological factors varying and the matrix of
planning the experiments to be carried out in order to
optimize the chemical additive amount. As a result of
the research accomplished the optimal amount of
chemical additives has been determined which enables
to produce the arbolite with some foamed polystyrene
gravel aggregate in its composition
In this article we have investigated ways to preserve the quality of horticultural products during transportation and loading works for the intrafarm transportations
The article deals with the basic methods of stabilizing voltage generators for small hydroelectric power plants. It shows a block diagram of the implementation and analysis of the characteristics of the work; it reveals the advantages and disadvantages. The authors explain the features of the work of the functional circuits voltage regulators with discrete ballast, with phase control and management of the load current. It is shown, that to improve the performance of small hydroelectric power plants considerably we have to use contactless generators in their construction: asynchronous generators with capacitive excitation and synchronous generators with permanent magnets. The functional scheme of the voltage regulator, the construction of which has an additional field winding, simplifies the system voltage stabilization of the synchronous generator with permanent magnets, as well as a functional scheme of an asynchronous generator voltage regulator, made using step-up transformers, which significantly reduces the weight of the capacitors providing excitation of the generator and compensation of reactive power load. We have discussed the methods and devices for stabilization of voltage generators which will improve the effectiveness of pre-design work on the creation of new devices of stabilization of parameters of electric power generators for small hydroelectric power plants with improved operational and technical specifications
The article is devoted to justification of application of an electroozonizer for sterilization of vegetable substrata and fodder grain in the course of biotechnological production