scholarly journals Stability of Heat and Energy Characteristics of Refrigerating Units as a Condition of Quality Increase of Agricultural Production Storage

2021 ◽  
Author(s):  
Sergey E. Bashniak ◽  
Evgeniy A. Ladygin ◽  
Olga S. Anisimova ◽  
Valentina Yu. Kontareva ◽  
Natalya G. Papchenko ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Agricultural Production ◽  
Minimum Energy ◽  
Specific Energy Consumption ◽  
Temperature Stability ◽  
Technical Condition ◽  
Storage Quality ◽  
Minimum Energy Consumption ◽  
Energy Indicators

This article provides information about the importance of stable thermal operating modes of refrigeration machines in the condition of changes in the thermal load on the compressor. We also consider the problem of the minimum energy consumption of refrigeration machines. These two parameters characterize the storage quality of agricultural products in refrigeration machines. It is shown that the temperature stability of the cooling chambers and the minimum energy consumption of the cooling process determine the refrigerator efficiency and, ultimately, the production cost. The article proposes continuous monitoring of the heat and energy indicators of refrigerators. These indicators are recorded and after the set period of operation, control and verification measurements of the control refrigeration machine’s heat and energy indicators are performed. The convergence or divergence of these indicators is used to evaluate the stability of the cooling chambers’ temperature regimes and the specific energy consumption. We also consider the influence of time on the performance of the compression refrigeration machine changes and methods of current technical condition diagnostics. If the deviations are insignificant, the program goes through the cycle to the beginning of monitoring and after a set period of time again automatically performs control measurements and evaluation of deviations. In the case of significant deviations, the decision-making subroutine is activated: either to operate the refrigerator further; perform its maintenance; suspend its operation; or replace it. Keywords: refrigeration units, cooling, heat and power characteristics, management controller, storage quality of agricultural production

scholarly journals ANALYSIS OF ENERGY PERFORMANCE OF FERROUS METALLURGY ENTERPRISES BASED ON THE SCHEME OF DECOMPOSITION

2018 ◽  
Vol 2018 (1) ◽  
Author(s):  
I Rakhmonov
Keyword(s):  
Energy Consumption ◽  
Ferrous Metallurgy ◽  
Specific Energy Consumption ◽  
Electricity Consumption ◽  
Energy Performance ◽  
Technical Condition ◽  
Compressed Air ◽  
Process Equipment ◽  
Decomposition Scheme ◽  
Energy Indicators

The task of determining specific electricity consumption is complex, as it is necessary to take into account a large number of factors affecting the energy indicators that determine the level of these indicators. At the same time, the type and technical condition of the main and auxiliary process equipment in the process of melting, the nomenclature of metal, the volume of consumed components of the process and secondary energy carriers (compressed air, nitrogen, oxygen and other auxiliary components), etc. are taken into account. The error in taking these factors into account may lead to deviations from the actual values of the predicted power consumption, as well as energy indicators. The energy intensity of products and the level of energy consumption also depends on changes in the structure of energy consumption, the latter depending on the need for such process components as compressed air, oxygen, nitrogen, etc. The article considers the results of the analysis of energy indicators of enterprises of ferrous metallurgy, in particular, electrosmelting shop by types of output products on the basis of decomposition scheme. It is shown that the set task is solved by means of construction of dependences of normative energy characteristics on the volume of output products, and also the final decomposition tree is formed - the tree of tasks designed to achieve solutions of energy problems, including the main one - to obtain the value of specific energy consumption. In addition, the article presents the method of determining the share of participation of auxiliary components of the technological process for example of compressed air, nitrogen and oxygen. At calculations the account of the above-stated components gives the chance to define more precisely specific expense of the electric power.

scholarly journals Real Time Minimum Energy Tracking Techniquies for Digital Load Circuit

2019 ◽  
Vol 8 (3) ◽  
pp. 5897-5900
Keyword(s):  
Energy Consumption ◽  
Minimum Energy ◽  
Estimation Methods ◽  
System Software ◽  
Efficient Design ◽  
Tablet Pcs ◽  
Minimum Energy Consumption ◽  
Different Levels ◽  
Load Circuit

Minimization of energy consumption is an important constraint in portable electronic devices such as smart phones or tablet PCs, laptops . With reliable energy measurement and estimation methods and tools, it is possible to accurate prediction of minimum energy consumption at different levels i.e., from circuit to architecture, architecture to system software and system software to application. Energy efficient design requires reducing energy dissipation in all stages of the design process without compromising the system performance and the quality of services..

scholarly journals Theoretical substantiation of constructive parameters of the working body of the chain top-crusher

2019 ◽  
pp. 84-88
Author(s):  
Vladimir Vladimirovich Melem ◽  
Nikolay Vasilievich Stepanov ◽  
Vyacheslav Vladimirovich Bonnet
Keyword(s):  
Energy Consumption ◽  
Minimum Energy ◽  
Mechanical Parameters ◽  
Theoretical Substantiation ◽  
Minimum Energy Consumption ◽  
Transverse Profile ◽  
Improved Performance ◽  
The Moment ◽  
Working Bodies

The top-crusher with more advanced design and improved performance characteristics has been proposed. The dependence between geometric and mechanical parameters of the rotor is established, providing maximum absolute speed of knife blades for the moment of cutting the stem which creates the best conditions for grinding the stems. It follows from the results of calculations that the proposed chain top-crusher, in comparison to the existing analogues, has: minimum energy consumption (Nprv=13-15 kWt), and, consequently, the lower fuel consumption (in comparison to KIR-1.5 Nprv KIR=18-20 kWt), improved quality of making technological process – by copying the transverse profile of the ridges and the increased reliability of working bodies.

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