scholarly journals Improvement evaluation methodology of vehicle load and energy efficiency

2021 ◽  
pp. 36-44
Author(s):  
Mikhail Podrigalo ◽  
Dmytro Abramov ◽  
Yurii Tarasov ◽  
Mykhailo Kholodov ◽  
Ruslan Kaydalov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Plants ◽  
Dynamic Properties ◽  
Fuel Efficiency ◽  
Evaluation Methodology ◽  
Design Stage ◽  
Design Production ◽  
Alternative Power ◽  
The Relationship ◽  
Efficiency Indicators

Problem. There was a need to expand the well-known concept of vehicle operational properties – fuel efficiency arose in connection with the advent of new alternative power plants (electric motors, flywheel engines, hybrid power plants, etc.), which requires the inclusion of not only the thermal energy of the fuel, but also other types of energy (electrical and mechanical). In the paper the research of choice and justification of the vehicle energy efficiency indicators by assessing the energy costs of the engine for its movement was made. The analysis of the relationship between energy characteristics of dynamics and vehicle efficiency was made. Goal. The aim of the study is to analyze methods for assessing the vehicle energy efficiency. To achieve this goal, it is necessary to determine indicators that will allow a comparative analysis of energy efficiency indicators of various vehicles. Methodology. The approaches taken in the work to solve this goal are based on substantiating the indicators of the energy efficiency of the car by assessing the energy consumption of the engine for its movement. Results. In our opinion, in projecting and evaluating the dynamic properties of vehicles, it is rational to use the energy indicators of the vehicle, for which it is necessary to develop appropriate assessment criteria. Analysis of the results of indicators calculation and, in table 1, has shown that the indicator in comparison with has less dispersion. Originality. The obtained results of the influence of the parameters of vehicles on the level of their energy load shows that the indicator has less dispersion than. In addition, the value does not correlate with the year of manufacture of the vehicle, which allows the use of this indicator at the design stage of vehicles. It is only necessary to set the rational normative value of this indicator. Practical value. The results obtained can be recommended to specialists for use in the design, production, certification and operation of automotive vehicles, vehicle energy efficiency, combined power plant.

scholarly journals Comprehensive Comparison between Hybrid and Electric Vehicles Using a Multi-Dimensional Techno-Economic Assessment Diagram: Concept and Application

2018 ◽  
Vol 9 (3) ◽  
pp. 41
Author(s):  
Takuya Hara
Keyword(s):  
Energy Efficiency ◽  
Electric Vehicles ◽  
Fuel Efficiency ◽  
Economic Assessment ◽  
Hybrid Vehicles ◽  
Gasoline Price ◽  
Co2 Intensity ◽  
Comprehensive Comparison ◽  
Uncertainty Analyses ◽  
The Relationship

This paper presents a visualization methodology, in the form of a multi-dimensional techno-economic assessment diagram, to comprehensively illustrate the relationship between assumptions (sets of input parameters) and results (corresponding output variables). This methodology is applied to analyze the lifecycle costs and CO2 emissions of hybrid vehicles (HVs) and electric vehicles (EVs). This paper then develops an eight-dimensional interactive diagram showing the relative advantages of HVs or EVs in the input space consisting of the following parameters: HV fuel efficiency; EV energy efficiency, total mileage travelled gasoline price, electricity price, battery price, gasoline CO2 intensity, and electricity CO2 intensity. This methodology provides a map illustrating the comprehensive relationship between the inputs and outputs in the model used, where specific scenarios (specific sets of inputs and their outputs) are represented by points plotted on the map. This methodology can be used in systematic comparisons of electric vehicles and related uncertainty analyses.

scholarly journals ОСОБЛИВОСТІ ОЦІНКИ ПАЛИВНОЇ ЕФЕКТИВНОСТІ МОДИФІКАЦІЙ ЛІТАКІВ З БАГАТОДВИГУНОВИМИ СИЛОВИМИ УСТАНОВКАМИ

2020 ◽  
pp. 117-126
Author(s):  
Александр Васильевич Лось
Keyword(s):  
Fuel Consumption ◽  
Power Plants ◽  
Fuel Efficiency ◽  
Weight Ratio ◽  
Design Stage ◽  
Transport Aircraft ◽  
Operating Modes ◽  
Emergency Situations ◽  
Wing Geometry ◽  
Engine Power

When creating modifications of transport category airplanes, fuel efficiency appears in the structure of their parameters.This indicator is very important, since operating costs largely depend on the amount of fuel consumed per unit of work.The problem of evaluating the fuel efficiency of modifications of transport aircraft with multi-engine power plants is considered. It is noted that multi-engine power plants, used mainly on medium and heavy aircraft, contribute to solving a number of problematic issues:– expanding the ability to operate in hot climates and highlands;– improving operational safety in the event of failure of one or two engines in case of deterioration of take-off/landing conditions, runway conditions, icing conditions and other emergency situations requiring increased thrust-to-weight ratio;– expanding the network of airfields used by reducing the sites of continued or interrupted take-off;– the absence of the need to use on the created modification more powerful engines, domestic or foreign, which do not have forced (emergency) operating modes.– However, the use of forced-mode engines in such power plants leads to a deterioration in fuel efficiency of up to 20 percent.For the preliminary design stage of modifications, a model is proposed for the formation of a fuel efficiency parameter while simultaneously replacing the main engines and changes in the wing geometry, which allows reducing fuel consumption for the flight, and thereby compensating for its losses when using emergency modes.This approach was implemented in the process of development of the An-188 operational tactical military transport aircraft, in which the replacement of 4 theater with 4 turbojet engines was coordinated with the necessary changes in the wing geometry, which allowed the military-technical complex to ensure fuel consumption in horizontal flight mode with maximum payload 154 g/t∙km per unit of useful work, i.e., lower than that of competitors-analogues.

scholarly journals Сравнение энергетической эффективности воспламенения топливной смеси искровым и стримерным разрядами

2021 ◽  
Vol 47 (15) ◽  
pp. 51
Author(s):  
П.В. Булат ◽  
К.Н. Волков ◽  
Л.П. Грачев ◽  
И.И. Есаков ◽  
П.Б. Лавров ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Plants ◽  
Fuel Efficiency ◽  
Fuel Mixture ◽  
Comparative Assessment ◽  
The Other ◽  
Computational Experiments ◽  
Streamer Discharge ◽  
Combustion Processes ◽  
Pulsed Spark Discharge

An increase in fuel efficiency and efficiency of combustion processes in power plants is discussed based on the data of physical and computational experiments. Two systems for ignition of a fuel mixture are considered, one of which uses a multi-point pulsed spark discharge, and the other uses a multipoint streamer discharge. A comparative assessment of the energy efficiency of each approach to the ignition of the air/fuel mixture is carried out, and conclusions are drawn about their effectiveness and prospects for use.

scholarly journals Renewable energy innovation in Europe: Energy efficiency analysis

2021 ◽  
Vol 234 ◽  
pp. 00021 ◽  
Author(s):  
Svitlana Kolosok ◽  
Iuliia Myroshnychenko ◽  
Halyna Mishenina ◽  
Inessa Yarova
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Efficiency Analysis ◽  
Energy Productivity ◽  
Regulatory Policies ◽  
Fiscal Incentives ◽  
Energy Innovation ◽  
The Relationship ◽  
Efficiency Indicators ◽  
Energy Efficiency Analysis

In this manuscript, we investigate the importance of renewable energy innovation for achieving inclusive and sustainable goals and the state’s energy security. Emphases in research are made on investigation the effect of regulatory policies and fiscal incentives on achieving renewable energy targets. Exploiting energy data for 28 European countries over the period 1990–2018, we assess the relationship between the volumes of renewable energy and energy efficiency. The statistical analysis we performed in Python. Our results indicate that the share of energy from renewable positively correlates with all energy efficiency indicators except energy productivity.

DEVELOPMENT OF RELIABILITY PROJECT ESTIMATION PROCEDURE CONSIDERING EFFECTS OF IONIZING RADIATION FOR ELECTRONIC EQUIPMENT

2019 ◽  
pp. 57-63
Author(s):  
M. A. Artyukhova ◽  
S. N. Polesskiy
Keyword(s):  
Ionizing Radiation ◽  
Radiation Resistance ◽  
Power Plants ◽  
Estimation Procedure ◽  
Reliability Estimation ◽  
Electronic Equipment ◽  
Design Stage ◽  
Space Systems ◽  
Reliability Indicators ◽  
Project Estimation

Human activity is often accompanied by exposure of ionizing radiation: the exploitation of space systems and power plants, research using isotopic sources, medicine. The development of electronic equipment is regulated by carrying out activities to ensure the required reliability and radiation resistance. However, the effect of ionizing radiation on reliability indicators is not taken into account properly, or is not taken into account at all, that sometimes leads to the loss of expensive equipment and even to human victims. The article discusses the methodology for carrying out an adequate estimate of the reliability considering the influence of external influencing factors, including ionizing radiation. The timeliness of decisions making to ensure the required reliability indicators is determined by the completeness of the reliability estimation at the design stage. Effort to ensure the reliability and durability of devices after the design stage is not economically viable. The completeness and adequacy of the estimation always depends on the interaction of specialists in different fields: designers, programmers, experts in the field of circuit design, electrical engineering and experts in the field of reliability and radiation resistance.

Rank analysis of energy efficiency of diesel power plants of the Krasnoyarsk region

2020 ◽  
Vol 919 ◽  
pp. 022030
Author(s):  
V I Panteleev ◽  
E Yu Sizganova ◽  
R A Petukhov ◽  
G A Pilyugin ◽  
S M Zilberman
Keyword(s):  
Energy Efficiency ◽  
Power Plants ◽  
Rank Analysis ◽  
Krasnoyarsk Region
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