scholarly journals INTEGRATED ENERGY SUPPLY SYSTEM WITH THE USE OF VENTILATION SYSTEMS

Author(s):  
V. Stepanenko ◽  
Y. Veremiichuk

The implementation of an integrated energy supply system is an effective way to increase energy efficiency, reduce CO2 emissions and increase the use of renewable energy, as well as provide opportunities for energy production, conversion and storage in interconnected infrastructures for energy system operators and consumers. Also, increasing the level of energy efficiency of the energy supply system is one of the important strategies to slow down the growth of demand and mitigate the negative impact on health, the economy and the environment. The article considers the integrated use of energy, the introduction of energy hubs as part of future energy networks and proposes a schematic diagram of an integrated energy supply system. The article presents the results of modeling and computational experiment of ventilation and air conditioning systems in the integrated power supply system, taking into account the technical and operational characteristics of SES, regulatory and technical documents and building codes. According to the results of the study, it is established that the schedule of SES generation and the schedule of electricity consumption by ventilation and air conditioning systems are similar, which leads to a reduction in operating costs and a reduction in the load on the building's power supply system. The scientific substantiation of the integration of the energy storage system into the energy supply structure has been further developed, which will ensure the reliability of the power supply and the efficiency of the solar power plant.

Author(s):  
A. Honcharuk ◽  
V. Oleniev ◽  
V. Shlapak ◽  
V. Didyk ◽  
N. Oleniev

In a certain perspective, the development of military equipment of military personnel should be aimed at equipping the military units with modern models of small arms that meet the world standards in terms of aiming, range and accuracy of shooting, armor-piercing, ammunition, energy supply, weight indicators etc. The priorities of logistical support are determined by: equipping the personnel with modern combat equipment complexes, which will consist of field uniforms at the level of the best world samples and personal protective equipment, night vision devices, navigation and communication equipment (with the necessary level of energy supply, energy security, security); search for new materials and technologies for the protection of manpower, terrestrial and aerial vehicles (composite nanostructured masking coatings with high thermal conductivity to reduce the likelihood of detection in the infrared spectrum by means of observation, detection, recognition) etc. The Individual Equipment Set of Personnel (IESP) remains one of the most important components that contributes to improving combat effectiveness and reducing personnel losses when performing combat missions. At the present stage of IESP development, priority is given to the creation of advanced systems of defeat, control and communication, protection, life support and energy supply, as well as increased soldier maneuverability in combat at the turn of 2020. A generalized analysis of the main tasks of creating a combat equipment complex (CEC) for the serviceman of the Armed Forces of Ukraine makes it possible to state that the fulfillment of all the intended goals and tasks should be ensured and accompanied by a highly effective system of scientific research and scientific support of the state programs of development of all systems and elements of the CEC. The power supply system and its components (chargers, power supplies, power converters and transmitters, means of controlling the system components) are one of the most important components of equipment. The most important stage of substantiation of the perspective composition of the energy supply system (chargers, power sources, means of transformation and transmission of electricity, means of controlling the performance of system components) in the complexes of combat equipment of military intelligence units is a complex assessment of the contribution to the effectiveness of combat based on mathematical modeling of fighting. According to the basic principles of the system approach, when developing requirements for individual subsystems, it is necessary to proceed from the basic purpose of the whole system as a whole, expressed in terms of its efficiency. This approach to the study of the energy supply system (chargers, power supplies, means of transformation and transmission of power, means of monitoring the performance of system components) in the complexes of military equipment of military intelligence units of the Armed Forces of Ukraine allows to choose rational option from the many options and direct the priority direction of upgrading of power supply system (chargers, power supplies, means of conversion and transmission of electricity, means of controlling work system components) in the complexes of military equipment of military personnel.


2020 ◽  
Vol 67 (1) ◽  
pp. 71-77
Author(s):  
Anatoliy M. Shuvalov ◽  
Aleksey N. Mashkov ◽  
Dmitriy A. Tikhomirov

The energy audit conducted on the use of fuel and energy resources in agriculture in the Tambov region showed that energy costs in the cost of production of agricultural products, depending on the type of products produced (milk, meat, vegetables grown in greenhouses, etc.) and their production technology, reach 15-50 percent. On large livestock farms, forage shops and inter-district feed mills are being built for the feed production. Gas-fired cooking cauldrons of low capacity (of 40-250 kilogram per hour) are mainly used for small and private farms. Analysis of low-power cooking boilers has shown that it is possible to improve their energy supply system by applying a method of regulating gas in proportion to the consumed heat flow. Energy savings can reach 40-50 percent. (Research purpose) The research purpose is in designing an equation system for mathematical description of the heat and energy balance of a gas-using cauldron with self-regulation of power to identify energy-efficient modes of its operation. (Materials and methods) Methods of system analysis and synthesis has been used. of knowledge existing in the field of ongoing research on the development of a gas-using digester with self-regulation of power. The methods are based on the theory of heat and mass transfer. (Results and discussion) The article presents a theoretical analysis of heat and power processes occurring in the power supply system of a cauldron with self-regulating power. The authors have designed a heat balance equation describing the processes of heat and mass transfer in a cauldron to identify effective modes of operation of such a power supply system. The article presents derived formulas for determining the useful heat for heating the product in the cauldron, heat loss for heating metal structures, from the enclosing structures to the environment, with outgoing exhaust gases, and from chemical underburning. (Conclusions) The article presents a system of equations that allows to mathematically describe the processes of heat and mass transfer in a gas-using cauldron with self-regulation of power to identify the most energy-efficient modes of its operation. It was found that by improving the power supply system of cauldron by applying a method of regulating gas in proportion to the consumed heat flow, it is possible to achieve energy savings of up to 40-50 percent.


Author(s):  
Erick Miguel Portugal Hidalgo ◽  
Dennis Wilfredo Roldán Silva ◽  
Gilberto Francisco Martha de Souza

The natural gas industry, as well as other industrial activities, is not free from accidents, which can cause serious consequences to the integrity of people and properties. For this reason, it is necessary to develop studies to determine what are the possible causes of LNG leakage during the loading or unloading operation. This paper aims to determine the reliability of the Cargo control system electric power supply system applying Markov Chain technique. This reliability modeling tool is used because the system consists of several components in passive parallel. Based on the reliability analysis maintenance recommendations are proposed aiming at reducing system failure probability. The method used in this paper is divided in three steps. The first step consists in carrying out a study to identify what are the components that are part of electric power supply system. The second step involves the reliability analysis of the electric energy supply system. Finally some maintenance recommendations are presented aiming at reducing system failure rate. This analysis is used for the analysis of a LNG carrier operating in a Brazilian harbor indicating the most probability failure modes of this system and the most suitable maintenance actions to avoid them.


Author(s):  
Valeriy Gozbenko ◽  
Yuriy Belogolov ◽  
Tuvshintur Bongosuren

The article presents the technical justification of the measure aimed at increasing the capacity of the railway line section by strengthening the devices of the power supply system.


2020 ◽  
Vol 24 (5) ◽  
pp. 1080-1092
Author(s):  
Valery Stennikov ◽  
◽  
Evgeny Barakhtenko ◽  
Gleb Mayorov ◽  
◽  
...  

The purpose of this work is to develop a multi-agent model of an integrated energy supply system in the AnyLogic simulation software and to conduct a research on the operation and interaction of objects in this system using the obtained model. A multi-agent approach is proposed to study integrated energy supply systems as it enables to carry out a detailed research of interaction and coordination mechanisms of various elements and subsystems (energy sources, transport subsystems, active consumers, etc.) of the object under investigation. The model is implemented in AnyLogic simulation software that supports designing, development and documenting of the created models, carrying out computer experiments, parameter optimization according to some criterion that enables visualization of the mechanisms of interaction and connection between the agents. A multi-agent model of the integrated power supply system has been developed. Agent state diagrams that take into account the operation of its elements have been created and the principles of their interaction and coordination have been analyzed. The structure of the developed model of an integrated power supply system contains four types of agents and connections between them. An experiment has been conducted on the basis of the developed model, in which the optimal solution was found for energy supply of consumers. The results of the conducted computational experiment show that the specified conditions and restrictions are met; messages and parameters are correctly transmitted between the agents and the agents perform the assigned functions in the system. The results obtained will allow to model real power supply systems of any complexity in order to study the properties and improve the efficiency of these systems. The developed model enables the possibility to model complex processes in an integrated energy supply system which relate to production, transport, distribution and consumption of energy.


Author(s):  
Kazuto Yukita ◽  
Tadashi Hosoe ◽  
Shunsuke Horie ◽  
Toshiro Matsumura ◽  
Masayoshi Hamanaka ◽  
...  

2018 ◽  
Vol 175 ◽  
pp. 04007
Author(s):  
LU Jin ◽  
YAN Tao ◽  
CAI Wen ◽  
Yang Hong-yan ◽  
WAN Zhong-hai

The distributed energy generation system is one of the main forms of the second-generation energy system currently. Three kinds of viable schemas of distributed energy supply system for nine users of the small region heat of Yangpu area combining with urban heating were proposed in this thesis, in which the gas turbines were selected. By analyzing the heat economy and pollutant emissions, the advantages and disadvantages of each schema were found out and the relatively better one was selected ultimately. Finally, some possible development trends and the prospects of the distributing energy supply system were also related and some complementary proposals were to table for some aspects of the system.


Author(s):  
Jekaterina Porubova ◽  
Gatis Bazbauers

Analysis of Long-Term Plan for Energy Supply System for Latvia that is 100% Based on the Use of Local Energy Resources The prices of fossil energy resources are expected to rise substantially in the future, therefore fossil energy resources might not be a feasible energy source for Latvia in the long term. The establishment of a fully self-sufficient energy supply system will require a significant transformation of the existing energy supply and transport infrastructure. Early planning of such a system makes it possible to shape development of the existing energy system in order to achieve that goal of a fully self-sufficient energy supply system. The paper shows a potential solution to establish an energy and transport system solely based on the domestic primary resources by the year 2050.


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