WAYS OF DECLINE OF HARMFUL EXTRAS OF WORKING GASES OF CARS FOR INCREASE OF ECOFRIENDLYNESS

2015 ◽  
Vol 2 (2) ◽  
pp. 564-568
Author(s):  
Болотов ◽  
N. Bolotov ◽  
Красникова ◽  
D. Krasnikova ◽  
Евсеева ◽  
...  
Keyword(s):  
Human Health ◽  
Exhaust Gases ◽  
Harmful Emissions ◽  
Harmful Substances

The article describes the content of harmful substances in exhaust gases of vehicles and their impact on the environment and human health, as well as ways to prevent harmful emissions into the atmosphere.

scholarly journals ЗМЕНШЕННЯ ВИКИДІВ СУДНОВОГО ДИЗЕЛЯ УТИЛІЗАЦІЄЮ ТЕПЛОТИ РЕЦИРКУЛЯЦІЙНИХ ГАЗІВ ЕЖЕКТОРНОЮ ХОЛОДИЛЬНОЮ МАШИНОЮ

2019 ◽  
pp. 20-24
Author(s):  
Максим Андрійович Пирисунько ◽  
Роман Миколайович Радченко ◽  
Андрій Адольфович Андреєв ◽  
Вікторія Сергіївна Корнієнко
Keyword(s):  
Nitrogen Oxides ◽  
Alternative Fuels ◽  
Exhaust Gas ◽  
Exhaust Gases ◽  
Harmful Emissions ◽  
Harmful Substances ◽  
Main Engine ◽  
Gas Recirculation ◽  
Refrigeration Machine ◽  
Emissions Of Harmful Substances

The problem of air basin pollution of the World Ocean with harmful emissions from the exhaust gases of marine diesel engines is primarily associated with the creation of highly efficient technologies for the neutralization of nitrogen oxides NOx on exhaust gases from a diesel engine. Emissions of harmful substances from the combustion of marine fuels are limited by international atmospheric protection programs and the requirements of the International Maritime Organization (IMO). The requirements relate to almost all groups of harmful emissions in marine engines and the more stringent of them are primarily related to nitrogen oxides NOx and sulfur oxides SOx. To reduce harmful emissions from exhaust gases into the environment, scientists and world engine leaders use and suggest various methods for reducing the content of harmful substances in exhaust gases. The implementation of new standards in the areas of further improvement of the working process, the use of alternative fuels, fuel, and air additives, as well as selective catalytic reduction systems do not preclude further development of scientific research in the field of exhaust gas cleaning. One of the promising ways in environmentalizing marine internal combustion engines is the neutralization of harmful substances in exhaust gases through particular gas recirculation (EGR-technology). However, the use of such techniques conflicts with the engine's energy efficiency. In the work presented, the scheme-design solution of the exhaust gas recirculation system with using the heat of recirculation gases by an ejector refrigeration machine for cooling the air at the intake of ship's main engine is proposed. The effect of using the heat of recirculation gases for cooling the air at the intake of the engine is analyzed taking into account the changing climatic conditions for a particular vessel's route line. It is shown that the use of an ejector refrigeration machine reduces the air temperature at the entrance of the main engine by 5…15 ° С, which reduces the specific fuel consumption. This reduces emissions of harmful substances when the engine is running with recirculation of gases.

scholarly journals ЗМЕНШЕННЯ ВИКИДІВ ОКСИДІВ АЗОТУ З ВІДПРАЦЬОВАНИМИ ГАЗАМИ СУДНОВИХ ДИЗЕЛІВ

2018 ◽  
pp. 36-41 ◽  
Author(s):  
Роман Миколайович Радченко ◽  
Максим Андрійович Пирисунько
Keyword(s):  
Nitrogen Oxides ◽  
Thermodynamic Cycle ◽  
Combustion Products ◽  
Working Fluid ◽  
Exhaust Gas ◽  
Exhaust Gases ◽  
Exhaust Temperature ◽  
Harmful Emissions ◽  
Marine Engines ◽  
Harmful Substances

Solving the problem of ocean's airspace polluting with harmful emissions of ship-generated diesel engines by exhaust gases is associated with the creation of highly effective technologies for the neutralization of nitrogen oxides NOx from the diesel plant that apply both to vessels in service, designed and built. The air entering the engine is a working fluid that carries out a certain thermodynamic cycle, resulting in a change in its chemical composition, and the exhaust gas mixture contains many components. Emissions of harmful substances during the combustion of marine fuels are limited in accordance with international programs for the protection of the atmosphere and requirements of the International Maritime Organization IMO. Requirements apply all groups of harmful emissions of marine engines. The most stringent of them concern nitrogen oxides NOx and sulfur oxides SOx. To reduce harmful emissions from the exhaust gases into the environment, scientists and world leaders in engine construction, such as MAN Energy Solutions and Wärtsilä, apply and offer a variety of techniques to reduce the number of harmful substances in the exhaust gases. One of the most promising is the exhaust gas recirculation system (EGRS) of the ship diesel engine. Its advantage over other methods is the insignificant impact on the operation of the engine. During the exhaust gas recycling a temperature of the flame in the combustion chamber decreases, which leads to the reduction of NOx number. This is a consequence of the high rates of carbon dioxide and water vapor. Since the combustion rate is reduced, the exhaust temperature and the thermal load on the engine part are increased. The dilution of the inflow air with waste gas reduces the oxygen content in the supercharged air from 21 to 13%. The possibilities of the technology of the system of recirculation of exhaust gases of a marine engine are limited by the value of the ratio of O2/CO2 in the intake air, due to which the amount of combustion products at the inlet is limited to no more than 30%

scholarly journals SUBSTANTIATION OF PARAMETERS FOR REDUCING THE TOXICITY OF EXHAUST GASES OF THE DIESEL ENGINE

2020 ◽  
pp. 44-57
Author(s):  
Yuriy Paladiychuk ◽  
Inna Telyatnuk
Keyword(s):  
Internal Combustion Engines ◽  
Particulate Filter ◽  
Combustion Engines ◽  
Exhaust Gases ◽  
Gasoline Engines ◽  
Advantages And Disadvantages ◽  
Industrial Enterprises ◽  
Harmful Emissions ◽  
Harmful Substances

Annual emissions of more than 6 million tons of pollutants and carbon dioxide into Ukraine. Mostly polluting industrial enterprises. However, with the increase in the number of cars on the roads, the number of harmful emissions into the atmosphere has increased. Over the past few years, the amount of exhaust gas entering the air in major cities has increased by 50-70%. More than half of the pollutants are emitted by private cars: in 2019, 1.7 million tonnes of harmful substances fell on them, while the total amount of all car emissions was 2.3 million tonnes. This article highlights the problem of environmental pollution by the exhaust gases of diesel internal combustion engines. Ways to improve environmental performance are presented. The composition of the exhaust gases and their effects on the environment are analyzed. The standards of Euro - 1 Euro - 6, on the reduction of harmful substances in diesel fuel are considered. The modern environmental standards of Stage and Tier and the regulation of smoke by standards are given. A formula for the determination of harmful substances in the exhaust gases of cars and a formula for the determination of the smoke of gases are proposed. The ways of neutralizing the toxicity of the exhaust gases with the help of neutralizers and the reduction of soot by means of the diesel particulate filter are considered. Common Rail DRNR systems, EGR and Selective Neutralization (SCR) systems using Adblu reagent, its advantages and disadvantages are described. The comparative characteristics of EGR and SCR systems are presented. Gasoline engines are not considered in this article.

scholarly journals Mining machinery and environmental regulations of countries worldwide

2020 ◽  
Vol 1 (1) ◽  
pp. 156-163
Author(s):  
Mark Leont’evich KHAZIN ◽  
Keyword(s):  
Human Health ◽  
Diesel Engines ◽  
Harmful Effect ◽  
Mining Industry ◽  
Well Being ◽  
Legal Regulation ◽  
Exhaust Gases ◽  
Exhaust Fumes ◽  
Harmful Substances ◽  
Drilling Rigs

The purpose of the work is to analyze the problems of using mining machines with diesel engines, the exhaust gases of which have a harmful effect on human health and the environment. Research methodology. The environmental problems arising from the use of mining machines, and environmental standards governing the use of diesel engines in different countries of the world are analyzed. Results. Environmental protection is one of the most important problems of humanity, since people’s lives, their health and well-being depend on its solution. The mining industry operates a huge amount of equipment with diesel engines: mining trucks, excavators, drilling rigs and other mining machines. Engine exhaust fumes contain toxic elements that have a significant impact on human health and the environment. The gas pollution of the working atmosphere entails the need to stop the quarry, and the deterioration of visibility on the highway also causes a partial or complete shutdown of the equipment until the content of harmful substances in the air drops to normal. Today, environmental requirements for a car engine are priority, so the global engine industry is aimed not only at increasing their performance, but also at significantly improving their environmental performance. The problem of air pollution by harmful substances contained in the exhaust of diesel engines is becoming global. To solve it requires the joint efforts of many countries. International conventions and the adoption of relevant standards serve as a tool for rapprochement in this area. Conclusions. Most countries in Europe, Asia and America are guided by similar standards for the content of harmful substances in exhaust gases. The EU in this regard is a kind of authority: it most often updates these indicators and implements strict legal regulation. Other countries are following this trend and are also updating emission standards.

scholarly journals International Emission Standards for Mining Machinery and Equipment

2020 ◽  
Vol 20 (3) ◽  
pp. 291-300
Author(s):  
Mark L. Khazin ◽  
Keyword(s):  
Air Pollution ◽  
Diesel Engine ◽  
Human Health ◽  
The European Union ◽  
Exhaust Gases ◽  
Emission Standards ◽  
Wide Range ◽  
Mining Machinery ◽  
Environmental Requirements ◽  
Harmful Substances

The paper analyses problems associated with the use of mining machinery equipped with diesel engine releases of exhaust gases that have a harmful impact on human health and the environment. The mining industry uses a wide range of equipment powered by diesel engines: dump trucks, backhoe loaders, drill jumbos and other mining machinery. Engine exhaust gases contain toxic elements that have a significant impact on human health and the environment. Air pollution from gases leads to standbys of mine sites, while a reduced visibility on a route results in a partial or total equipment shutdown. At present, environmental requirements to vehicle engines are a top concern. The problem of air pollution with harmful substances contained in diesel engine exhausts is becoming a global challenge. Solutions of these issues require joint efforts from many countries. International conventions and adoption of relevant standards serve as a means of rapprochement in this sphere. Most operations in Europe, Asia and America are guided by similar standards as to the content of harmful substances in exhaust gases, the European Union being an influencer in this regard by frequently introducing updates and stringent regulations. Other countries are following this trend and revising their emission standards too. European states had paid attention to this issue earlier than other countries. Today, environmental requirements to vehicle engines are a top priority. Research in this field is focused on such issues as increasing productivity of mining machinery engines, reducing labour costs of maintenance and repairs, enhancing fuel efficiency and significantly improving environmental performance.

AN INFLUENCE ASSESSMENT THE AERIAL OF EMISSIONS ON ECOSYSTEMS OF A ROADSIDE STRIP OF HIGHWAYS

2016 ◽  
Vol 8 (3) ◽  
pp. 90-92
Keyword(s):  
Exhaust Gases ◽  
Environment Changes ◽  
Harmful Substances

In this article definition procedure (in dynamics) estimates of impact on environment, changes of emissions on depth and the area of forest plantings from a stream of vehicles (amount of harmful substances in exhaust gases of engines), their estimates and influence on ecological qualities of highways is considered.

scholarly journals HARDWARE AND SOFTWARE OF AUTOMATIC CONTROL SYSTEM OF FUEL COMBUSTION PROCESS IN LOW AND MEDIUM POWER BOILERS. PART 2. ALGORITHMIC SOFTWARE

2021 ◽  
pp. 65-75
Author(s):  
Arthur Zaporozhets ◽  
Yurii Kuts
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Operating Systems ◽  
Combustion Process ◽  
Fuel Combustion ◽  
Programming Environment ◽  
Exhaust Gases ◽  
Boiler Units ◽  
Harmful Substances ◽  
Made In

The efficiency of the functioning of boiler units depends on the availability of reliable information on the progress of technological processes. The lack of control and measuring systems for the composition of the exhaust gases leads to low efficiency of the boiler unit, in particular, due to poor-quality fuel combustion. Therefore, in modern operating conditions of boiler units, it is relevant to develop technological solutions focused on finding and minimizing the causes and mechanisms of the formation of harmful substances in exhaust gases. Due to the fact that replacement of outdated boiler units with new ones requires significant capital investments, a promising direction is the modernization of existing boiler units. It is a low-cost and efficient way of rational use of fuel while simultaneously reducing the level of harmful substances in exhaust gases. It remains relevant to ensure the functioning of the control systems for the composition of the air-fuel mixture (AFM) with a given speed and high reliability of maintaining the excess air ratio (EAR) at the stoichiometric level. In the article the high-quality algorithm is proposed for the operation of an automatic control system for the combustion of fuel in boilers of medium and low power by regulating the ratio of the components of the AFM for the burner with feedback according to the signals of the oxygen sensor. The algorithms for the operation of the frequency regulator of the ratio of the components of the AFM in various operating modes are considered. The developed algorithms allowed maintaining the stoichiometric air-fuel ratio in the boiler furnace, reducing the level of toxic emissions into the atmosphere and increasing the boiler efficiency by optimizing the fuel combustion process. The AFM ratio programmer is made in the LM Programmer technical programming environment and works with Windows operating systems (XP, Vista, 7, 8, 10) and oxygen sensors manufactured by Bosch. The visualization of the control process of the fuel combustion process is made in the technical programming environment LogWorks 3 and operates in the environment of Windows operating systems.

scholarly journals Identification and life cycle based allocation of building emissions based on a systematic literature review

2021 ◽  
Vol 2042 (1) ◽  
pp. 012177
Author(s):  
K Theilig ◽  
M Vollmer ◽  
W Lang
Keyword(s):  
Life Cycle ◽  
Literature Review ◽  
Human Health ◽  
Systematic Literature Review ◽  
Implementation Strategies ◽  
Building Sector ◽  
Harmful Emissions ◽  
Use Stage ◽  
Zero Emission ◽  
Negative Impacts

Abstract Even though it is scientifically well known that there are various building emissions with harmful impacts on human health and the environment, existing evaluating approaches only refer to selected emissions and life cycle phases. Especially in today’s building sector harmful emissions are mainly evaluated in the use stage and the target is to minimize rather than avoid them. However, in order to avoid subsequent negative impacts, implementation strategies have to be developed and applied during early planning phases. This research presents an overview of relevant building emissions as well as a life cycle based approach to allocate these emissions and to show possibilities of influence towards zero emission buildings.

scholarly journals INCREASE OF ECOLOGICAL EFFECTIVENESS OF COMPLEX HEAT-RECOVERY SYSTEMS FOR BOILER PLANTS

2018 ◽  
Vol 40 (2) ◽  
pp. 27-32 ◽  
Author(s):  
N. M. Fialko ◽  
R. A. Navrodskaya ◽  
G. A. Presich ◽  
G. A. Gnedash ◽  
S. I. Shevchuk ◽  
...  
Keyword(s):  
Nitrogen Oxides ◽  
Fuel Consumption ◽  
Heat Recovery ◽  
Environmental Indicators ◽  
Steady Increase ◽  
Boiler Furnace ◽  
Boiler Water ◽  
Exhaust Gases ◽  
Harmful Emissions ◽  
Condensation Mode

It is revealed that the humidifying of blown air in complex heat recovery systems of gas-fired boiler plants provides the significant reduction in the concentration of nitrogen oxides in exhaust-gases due to the suppression of their formation in the boiler furnace when moisture is introduced with this air.  Problems of environmental protection and energy-saving became priority in world practice. The main directions of deciding these pressing problems in municipal heat-power engineering is to improve the environmental indicators of heating boiler plants and increase the efficiency of using fuel in them through the use of technologies for deep recovery of the exhaust-gases heat. The relevance of scientific problems in these directions is increasing due to the steady increase in the fuel-energy costs and the strengthening of requirements to reducing environmental pollution. When using these technologies of deep heat-recovery of exhaust-gases, the condensation mode of the heat-recovery equipment is realized, when, apart from to the so-called clear heat of these gases, the latent heat of condensation of the water vapor contained in them is also used. The condensation mode implementation also improves the ecological indicators of the boiler due to the reduction of fuel consumption and the dissolution in the resulting condensate of a part of harmful emissions formed during its combustion. The use of modern heat-recovery technologies for the gasfired boiler plants with complex use of recovered heat for the preheating of boiler water, water of the chemical waterpurification system and blowing air makes it possible to reduce fuel consumption in the boiler and, accordingly, its harmful emissions by 8...12 %. Humidification of the blowing air through the use of the recovery heat also provides a reduction of nitrogen oxides emissions to 60 % by suppressing their formation in the boiler combustion chamber.

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