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Relevant bibliographies by topics / Pollution control devices

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Academic literature on the topic 'Pollution control devices'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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Journal articles on the topic "Pollution control devices"

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Anderssen, R. S., C. R. Dietrich, and P. A. Green. "Designing artificial lakes as pollution control devices." Mathematics and Computers in Simulation 32, no. 1-2 (1990): 77–82. http://dx.doi.org/10.1016/0378-4754(90)90218-8.

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Krishnaraj, R. "Contemporary and futuristic views of pollution control devices in foundries." Ecotoxicology and Environmental Safety 120 (October 2015): 130–35. http://dx.doi.org/10.1016/j.ecoenv.2015.05.045.

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Kharat, Dal Singh. "Pollution Control in Meat Industry." Current Environmental Engineering 6, no. 2 (2019): 97–110. http://dx.doi.org/10.2174/2212717806666190204102731.

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Meat industry generates various wastes such as effluent, emissions and solid wastes that pose environmental and health problems. The effluent released from the meat industries finds its way into the natural water resources and degrade the water quality. The solid wastes of meat industry create a public nuisance by way of foul smell if it is not handled properly. The effluents, as well as solid wastes of meat industries, are possible sources of pathogens that are hazardous to human health. Waste minimization, segregation of wastes and treatment, processing of wastes to make possible recoveries of by-products and the final disposal are the basic steps for containment of pollution from the meat industry. The effluent treatment technologies include primary treatment, secondary treatment and tertiary treatment. Composting, biomehtanation, rendering, incineration and burial are the processes for disposing of the solid wastes generated by meat industries. Appropriate treatment process is selected considering the level of pollution, mode of disposal and the environmental standards. The treatment and processing of meat industry wastes minimize the pollution problems and also give scope for the recovery of by-products such as bone and meat meal, tallow, methane and manure that have commercial values. The meat industries also generate odours that are required to be contained using suitable control devices. The paper seeks to give an overview of the pollution control technologies currently in use for the treatment of effluents and solid wastes, and possible recovery of by-products.

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Janaki, S., R. Jayachitra, A. P. Senthil Kumar, and C. Poornima. "Cost Evaluation of Pollution Control Devices in a Small Scale Foundry." Asian Journal of Research in Social Sciences and Humanities 6, no. 10 (2016): 786. http://dx.doi.org/10.5958/2249-7315.2016.01052.2.

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Chung, Chin Ming, Che Wei Lin, and Chia Chen Gu. "Control System for Multifunctional Green Buildings." Advanced Materials Research 156-157 (October 2010): 439–46. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.439.

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In modern life, factories and household electricity consume the largest amount of electric power, especially in summer. The continuous operation of air-conditioning system increases the heat in the environment and speeds up energy consumption as well. Therefore, in order to promote ecological balance, reduce carbon dioxide emission, and establish no pollution living environment, this study used green energy power generation technology, rainwater collection system, automatic light sensor-controlled curtain, infrared-controlled light, temperature sensor-controlled air-conditioning system, anti-theft system, and smoke-sensing device as effective devices for utilization of green energy. The rainfall collection system can increase the utilization of water resource. The curtain with light sensors, illumination system, and air-conditioning system can effectively save energy. The anti-theft system and smoke sensing device can both ensure the safety of living environment and achieve the objective of energy saving and carbon reduction, which can make the future living environment become more comfortable, energy-saving, and environmental-friendly. In addition, the devices above can also make contribution environmental protection of the earth and preserve a clean, beautiful, and sustainable environment for future generations.

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Lu, Ya Ping, Tian Lin Song, and Hai Qing Liu. "Influence of Silicon Controlled Rectifier Voltage Regulation Device under DDC-Temperature Control." Advanced Materials Research 706-708 (June 2013): 826–29. http://dx.doi.org/10.4028/www.scientific.net/amr.706-708.826.

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In the boiler heating control device of combining DDC and the silicon controlled rectifier voltage regulation device, there are phase shift trigger, pulse width modulation (PWM) and cycle wave cross zero trigger (CYC). Under the different silicon controlled rectifier voltage regulation devices, there are different influences for DDC. It makes the best of the cycle characteristics of the alternating current (AC) for the cycle wave cross zero trigger (CYC). For DDC - temperature control system, there are advantages of high control accuracy, less interference and power source pollution.

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Dryuchkov, Evgeniy, Irina Zaporotskova, Daria Zvonareva, and Lev Kozhitov. "Modified Boron-Carbon Nanotubes as Effective Sensor Devices for Environmental Pollution Control." NBI Technologies, no. 2 (September 2023): 35–43. http://dx.doi.org/10.15688/nbit.jvolsu.2023.2.5.

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Recently, more and more people have become aware of the need to protect the environment and find new ways to protect our planet from various types of pollution. In this regard, science and technology play an important role in finding new solutions to protect the environment. One innovative development is boron-carbon nanotubes, which contain equal amounts of boron and carbon atoms. Modification of such nanotubes with an amine group would allow to use them for creation of highly sensitive sensor devices, which would help to control the levels of lithium, sodium, potassium in the environment and prevent their negative impact on nature and human health. In this article, a theoretical study of the sensing properties of a functionalized amino-group boron-carbon nanotube of the zig-zag type (6.0) containing equal amounts of carbon and boron is discussed. Such a nanotube could act as an element of a sensor device for environmental protection. The simulation was performed within a molecular cluster model using the DFT computational method, the B3LYP functional, and the 6-31G basis set. It is concluded that the system can be used to detect the presence of alkali metal atoms.

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Li, Kai, Bing Xiao, Yanjun Wang, Jianli Jia, and Xiaodong Wu. "Applications of Electric Heating Technology in Vehicle Exhaust Pollution Control." Processes 12, no. 2 (2024): 298. http://dx.doi.org/10.3390/pr12020298.

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Motor vehicle exhaust is an important cause of atmospheric pollution. Nowadays, mainstream exhaust emission aftertreatment technologies, such as TWC, DOC, SCR, and DPF, usually require sufficient temperature to perform good purification or maintain normal working conditions. Compared with exhaust gas heating technologies such as engine enrichment and fuel injection, electric heating technology can quickly increase the temperature of exhaust gas aftertreatment devices without adverse effects on engine operating conditions. This article introduces the research and progress of electric heating technology combined with traditional aftertreatment devices on major types of vehicles, such as gasoline vehicles, diesel vehicles, motorcycles, and hybrid vehicles, to improve exhaust purification efficiency and its accompanying fuel consumption impact. In addition, the common structure and characteristics of electric heaters, as well as the current status and development trend of electric heating unit technologies such as electric heating power supply are introduced.

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Abdillah, Moh Fadhli, and Taufik Hidayat. "SISTEM KENDALI ROBOT PENGUKUR GAS BERBASIS JARINGAN INTERNET." SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI 32, no. 3 (2022): 75–87. http://dx.doi.org/10.37277/stch.v32i3.1353.

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Abstract Robot is a complex device consisting of mechanical motion components, electric circuits and a solid control system. The robot can receive commands from someone who controls it directly or with a predefined program. At this time the development of materials, electronic devices, and communication devices has growth. Therefore it is possible to make a robot to replace human roles that can be assigned to dangerous fields, such as forest fires, environmental pollution from toxic gases and so on.A robot with a movement system that can explore in various fields, has sensors to detect gas levels and a communication device that can receive and transmit data directly using the internet network. The remote control system is implemented to provide a solution for humans in controlling devices that can be controlled remotely. To guide the motion of the robot, a camera is used to take the image is expected to be more real and can monitor or see the situation around the robot.  Keyword : Robot, Internet, Camera, Sensor

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Abdillah, Moh Fadhli, and Taufik Hidayat. "SISTEM KENDALI ROBOT PENGUKUR GAS BERBASIS JARINGAN INTERNET." SAINSTECH: JURNAL PENELITIAN DAN PENGKAJIAN SAINS DAN TEKNOLOGI 32, no. 3 (2022): 75–87. http://dx.doi.org/10.37277/stch.v32i3.1365.

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Abstract Robot is a complex device consisting of mechanical motion components, electric circuits and a solid control system. The robot can receive commands from someone who controls it directly or with a predefined program. At this time the development of materials, electronic devices, and communication devices has growth. Therefore it is possible to make a robot to replace human roles that can be assigned to dangerous fields, such as forest fires, environmental pollution from toxic gases and so on.A robot with a movement system that can explore in various fields, has sensors to detect gas levels and a communication device that can receive and transmit data directly using the internet network. The remote control system is implemented to provide a solution for humans in controlling devices that can be controlled remotely. To guide the motion of the robot, a camera is used to take the image is expected to be more real and can monitor or see the situation around the robot.  Keyword : Robot, Internet, Camera, Sensor

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Dissertations / Theses on the topic "Pollution control devices"

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Ahanotu, Dike N. "Heavy-duty vehicle weight and horsepower distributions : measurement of class-specific temporal and spatial variability." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/23213.

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Fomunung, Ignatius Wobyeba. "Predicting emissions rates for the Atlanta on-road light-duty vehicular fleet as a function of operating modes, control technologies, and engine charateristics." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/20834.

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Bachman, William Hendricks. "Towards a GIS-based modal model of automobile exhaust emissions." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/21762.

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Garretson, Charles C. "Evaluation of nitrogen oxide emission factors for heavy-duty diesel trucks based on ambient air measurements." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/20984.

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Lakshminarayanan, Anand. "Analysis of the sensitivity of photochemical airshed modeling to grid size and spatial and temporal distributions aof mobile source emissions." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20835.

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Sturgess, M. "Selective catalytic reduction for light-duty diesel engines using ammonia gas." Thesis, Coventry University, 2012. http://curve.coventry.ac.uk/open/items/aa3c644b-15fd-429a-b457-a831d44c5dce/1.

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This thesis describes an investigation into the spatial species conversion profiles of a Cu-zeolite SCR under engine conditions at low exhaust gas temperatures; this was then compared with a CFD model that models the catalyst via a porous medium measuring 5 x 5 x 91 cells assuming a uniform cross-sectional flow distribution. Species conversion rates were sampled at fixed points in the axial direction. The analysis of the spatial conversion profiles is a more rigorous method in assessing the ability of a mathematical model to predict the experimental data. It can also assist in the optimisation of the catalyst size, minimising packaging requirements and manufacturing costs. The experiments were undertaken on a light-duty diesel engine at a speed of 1500rpm, and at a load of 6bar BMEP; this provided exhaust gas temeraqtures between 200 and 220°C. NO2:NOx ratios were controlled by changing the size and position of the diesel oxidation catalyst, the inlet NH3: NOx ratio was also also varied, ammonia gas was used instead of urea for the purposes of simlicity. The advantage of testing on an actual engine over lab-babed studies is that the conditions such as exhaust gas composition are more realistic. A 1D CFD model was constructed using the ‘porous medium approach’ with kinetics obtained from open literature. Results from the simulations were then compared with the experimental data for the same engine conditions. It was observed that the majority of the NOx conversion took place in the first half of the brick for all NH3: NOx ratios investigated, and that the formation of N2O via NO2 and ammonia had the same influence as the ‘fast’ SCR reaction just after the inlet, which the CFD model failed to predict for the base case analyses. The influence of the inlet ammonia on the model was also noticed to be greater than in the experiments. Simple transient analyses were also undertaken on the short SCR bricks for NO2: NOx ratios of 0.6 and 0.07, and it was observed that the response time to steady-state was noticeably higher in the experiments than in the model. Modifications made to the model, including decreasing the influence of the ‘fast’ SCR reaction, and the addition of an empirical term onto the ammonia adsorption provided a noticeably better agreement for different NH3: NOx injection ratios. The desorption kinetics in the model were also altered by increasing the strength of the bonding of the ammonia onto the adsorption sites. This improved the transient agreement between the model and the experiments, but reduced the steady-state concentrations at the exit of the brick for all NH3:NOx ratios investigated.

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Miller, David J. "Effect of oil age on polyaromatic hydrocarbon emissions from automobiles." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/101130.

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Automobiles are known to emit polyaromatic hydrocarbons. The literature indicates that the emission levels of these compounds are correlated with oil age, and it has been hypothesized that entry of oil into the combustion chamber is a major cause of these emissions. This experiment investigated the relationship between oil age and these polyaromatic hydrocarbon emissions. It was found that the three polyaromatics of interest seem to be emitted inconsistently and irregularly. It is possible that this was due to a buildup on the combustion chamber walls of these compounds: polyaromatics are formed in the quench layer near these walls and can accumulate there until dynamic equilibrium is reached. This may not have been reached at the time of the investigation since the engine was relatively new. This would be of interest for future investigations.<br>M.S.

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Toral, del Rio Maria Isabel. "An analysis of the influence of phosphorus poisoning on the exhaust emission after treatement systems of light-duty diesel vehicles." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/697.

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Climate change has become a discussion topic of exponentially increasing urgency and importance amoung world leaders of all disciplines. These changes are brought about by the emission of so-called Greenhouse gases from various human activities. The primary cause of CO2 emissions is the burning of the Earth’s supply of nonrenewable natural fossil fuels like coal, oil and natural gas. The world first agreed on the prevention of “dangerous” climatic changes at the Earth Summit in 1992. The Kyoto Protocol of 1997 was the first step toward protection of the atmosphere and prescribes restrictions on emission pollutants. Since then the vehicle gas emissions are being controlled by means of different gas emissions norms, like the European Union Norm in Europe. The automotive manufacturers and suppliers are collectively working on reducing overall vehicle emissions. They are focusing on several different emission limiting possibilities, for example improved engine design, special fuel development and exhaust gas treatment systems. The exhaust gas treatment process requires continuous controlling and management of the exhaust gas emissions while driving a vehicle. Certain factors such as high emission temperatures have a negative influence on the life span of these systems. Their functionality and durability is also known to be reduced by the presence of chemical poisoning species like sulphur, phosphorus, zinc and calcium. The chemical poisoning species are produced during combustion of fuel and engine oil. They are therefore contained in the exhaust emissions and can poison the catalyst when passing over it. Phosphorous poisoning is particularly problematic and should be reduced considerably. This study involves the investigation of the phosphorous poisoning process and aims to provide clarity regarding the influences of different fuel and oil compositions on the severity of the process. Engine oil and biodiesel are two major sources of phosphorous poisoning. The phosphorus contained in biodiesel fuel is a natural component and can be minimized during the refining procedure. In contrast to others studies, the biodiesel fuel used during this project was SME (Soya Methyl Ester) with a 20% biodiesel content. This choice of fuel was made because of the increasingly important role that this type of biodiesel is playing in the European market and the future tendency to increase the percentage of biodiesel in the mixture with standard diesel fuel. The phosphorus contained in engine oil is a necessary additive to retain the antioxidant and anti-wear properties of the oil. This study examined the poisoning influences from the most commonly used phosphorus containing oil additive, Zinc Dithiophosphates (ZDDP), as well as a Zn-free, phosphorus containing anti-wear oil additive. This formulation provides information about the phosphorus poisoning process as caused by the engine oil in the absence of Zn in the oil additives. The results show how the phosphorus content in biodiesel fuel affects the functionality of the exhaust gas treatment systems and the importance of reducing the permitted content of phosphorus contained in the fuel. Reducing the phosphorus content in the fuel will conserve the functionality of the exhaust gas treatment systems during their operational life and thereby protect the environmental from emission pollutants. It also provides insight into the differences in the poisoning processes when the phosphorus deposited on the catalyst comes from biodiesel fuel and when it comes from the engine oil. Finally the results also illustrate the influence of different phosphorous forms contained in engine oil additives on the catalyst poisoning process. This information could be used for the development of new oil additive formulations.

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Okumu, Fredrick Oluoch. "Electrochemical analysis of selected polychlorinated biphenyls and contaminated water remediation using polyaniline coated sawdust." Thesis, Cape Peninsula University of Technology, 2012. http://hdl.handle.net/20.500.11838/2325.

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Thesis (MTech (Chemistry))--Cape Peninsula University of Technology, 2012.<br>Polychlorinated biphenyls (PCBs) are known harmful chemicals which require urgent remediation, monitoring and assessment in the environment. The predominant current methods used to analyze PCBs involve expertise and are cost intensive. Most of these methods are chromatographic based techniques which are difficult to sustain in Africa due to the expensive nature of the instrument, costly running expenses and skilled labour required. These limitations face Africans, who are the most affected by the presence of PCBs in their environment as a result of improper disposal and usage of these compounds.

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Giavis, Konstantinos C. "Catalytic control of individual hydrocarbons from a small utility gasoline engine." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09292009-020311/.

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Books on the topic "Pollution control devices"

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D, Hayes B., and New Jersey. Dept. of Transporation., eds. Evaluation of highway runoff pollution control devices. New Jersey Dept. of Transporation, 1996.

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Engineers, Society of Automotive, and SAE International Congress & Exposition (1997 : Detroit, Mich.), eds. Issues in emissions control technology. Society of Automotive Engineers, 1997.

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Pence, Margeret. Handbook of air pollution control systems and devices. University Publications, 2012.

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Bob, Freudenberger, ed. Understanding automotive emissions control: Theory, troubleshooting, maintenance, testing, tuning, repair. HPBooks, 1995.

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Marin, Guy B. Automotive emission control. Academic Press, 2008.

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International Fuels and Lubricants Meeting and Exposition (1985 Tulsa, Okla.). Worldwide emission control: Automotive catalysts. Society of Automotive Engineers, 1985.

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Halderman, James D. Automotive fuel and emissions control systems. Pearson, Merrill/Prentice Hall, 2009.

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International, Mitchell, ed. Automotive emission control. 6th ed. Mitchell International, 1989.

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Cope, D. Vehicle emissions control system tampering. Environment Canada, 1988.

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Rick, DuPuy, ed. Fuel systems and emission controls. 4th ed. Chek-Chart Publications, 2000.

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Book chapters on the topic "Pollution control devices"

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Hesketh, Howard E. "Control Devices." In Air Pollution Control. CRC Press, 2023. http://dx.doi.org/10.1201/9781003424079-5.

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Vatavuk, William M. ""Add-on" Controls II: Particulate Control Devices." In Estimating Costs of Air Pollution Control. CRC Press, 2023. http://dx.doi.org/10.1201/9781003418856-5.

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Vatavuk, William M. ""Add-on" Controls III: Gaseous Control Devices." In Estimating Costs of Air Pollution Control. CRC Press, 2023. http://dx.doi.org/10.1201/9781003418856-6.

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Ramandeep Singh, Toolika Srivastava, Anuj Sharma, Sandeep Sharma, and Santosh Kumar. "Digital Image Processing-Based Water Pollution Control System." In Proceeding of International Conference on Intelligent Communication, Control and Devices. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1708-7_133.

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BOUBEL, RICHARD W., DONALD L. FOX, D. BRUCE TURNER, and ARTHUR C. STERN. "Control Devices and Systems." In Fundamentals of Air Pollution. Elsevier, 1994. http://dx.doi.org/10.1016/b978-0-08-050707-1.50033-0.

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"Adsorption Devices." In Air Pollution Control Equipment Selection Guide. CRC Press, 2013. http://dx.doi.org/10.1201/b15516-6.

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"Adsorption devices." In Air Pollution Control Equipment Selection Guide. CRC Press, 2002. http://dx.doi.org/10.1201/9781420031737.ch2.

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Schifftner, Kenneth. "Absorption Devices." In Air Pollution Control Equipment Selection Guide, 3rd ed. CRC Press, 2021. http://dx.doi.org/10.1201/9781003032571-2.

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VALLERO, DANIEL A. "Control Devices, Technologies, and Systems." In Fundamentals of Air Pollution. Elsevier, 2008. http://dx.doi.org/10.1016/b978-012373615-4/50033-9.

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"Pneumatic Devices." In Pollution Control Handbook for Oil and Gas Engineering. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119117896.ch76.

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Conference papers on the topic "Pollution control devices"

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Crnogaj, Anja, Klara Buljan, and Đorđe Pejkić. "IMPLEMENTATION OF SMALL BIOLOGICAL DEVICES FOR WASTEWATER TREATMENT IN LOCAL COMMUNITIES: PERSPECTIVES AND REALIZATIONS." In 53rd Annual Conference of the Serbian Water Pollution Control Society. SERBIAN WATER POLLUTION CONTROL SOCIETY, 2024. http://dx.doi.org/10.46793/voda24.313c.

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The implementation of smal-scale biological devices for wastewater treatment offers economical and ecological solutions to local communities. These systems, tailored to specific needs, represent a feasible solution for wastewater managment. The paper analyzes the technology, efficiency, adaptability, and successful application examples, identifying key success factors, Future perspectives include technological advancements and regulatory improvements. The aim is to demonstrate how these devices contribute to sustainable development, emphasizing the importance of local adaptation and community engagement in addressing water managment challenges

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Ivanov, A. M., A. N. Andreev, Ph K. Dyakov, N. V. Popov, and A. I. Kalinin. "Pollution Practical Research of Adaption Cruise Control System Radar During Winter Usage Condition." In 2022 Intelligent Technologies and Electronic Devices in Vehicle and Road Transport Complex (TIRVED). IEEE, 2022. http://dx.doi.org/10.1109/tirved56496.2022.9965517.

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Beaulieu, H., and A. Siert. "188. Exposure Assessment of Maintenance Operations of Air Pollution Control Devices During “4Outages” of Electric Power Generation Facilities: the Components of “Fly Ash” Dust." In AIHce 1997 - Taking Responsibility...Building Tomorrow's Profession Papers. AIHA, 1999. http://dx.doi.org/10.3320/1.2765311.

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Joshi, Shreyash, and Bo Chen. "Modeling and Hardware-in-the-Loop Simulation of Power-Split Device for Hybrid Electric Vehicles." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46187.

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Conventional vehicles are creating pollution problems, global warming and the extinction of high density fuels. To address these problems, automotive companies and universities are researching on hybrid electric vehicles where two different power devices are used to propel a vehicle. This research studies the development and testing of a dynamic model for Prius 2010 Hybrid Synergy Drive (HSD), a power-split device. The device was modeled and integrated with a hybrid vehicle model. To add an electric only mode for vehicle propulsion, the hybrid synergy drive was modified by adding a clutch to carrier 1. The performance of the integrated vehicle model was tested with UDDS drive cycle using rule-based control strategy. The dSPACE Hardware-In-the-Loop (HIL) simulator was used for HIL simulation test. The HIL simulation result shows that the integration of developed HSD dynamic model with a hybrid vehicle model was successful.

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Smaqaey, Ayoub, Mohammed AbdulKareem, and Meryem Komşu. "The Impacts of Traffic Noise on House Renting and Selling Prices Concerning Residential Areas Case of Sulaimaniyah City Center." In 3rd International Conference on Administrative & Financial Sciences. Cihan University - Erbil, 2021. http://dx.doi.org/10.24086/afs2020/paper.214.

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The purposes of this research are to examine the impact of traffic noise on the sale and rent prices of the housing real estate in the Sulaimaniyah city center. Besides, highlight the concept of traffic noise pollution in general and in particular in the Sulaimaniyah city center. Thus, people have the right to choose the nature of the acoustic environment, as others should not impose it, the problem of traffic noise considered as one of the main problems that have imposed on the people in Sulaimaniyah city center. Which began to take severe economic and social dimensions, affects the decision-making process in the real estate market. Moreover, consequently, this research analyzes the impact of traffic noise pollution in the sale and rent prices of residential property in Sulaimaniyah city center, the results of the research have confirmed a clear and negative impact the traffic noise on residential real estate prices in Sulaimaniyah city center. Finally, the research indorsed range of important recommendations, such as necessity control the noise pollution at the level of governments and companies, either at the companies’ level by choosing vehicles that release less sound and the use of sound control devices of high efficiency. Either at the government level to determine the volume level or prevent annoying noises (painful), through legislation and laws of environmental protection and impose fees and raise awareness.

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Xiros, Nikolaos I., Georgios Tsakyridis, Marco Scharringhausen, and Lars Witte. "Control of a DC-DC Boost Converter for Fuel-Cell-Powered Marine Applications." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78171.

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Economic factors together with protection laws and policies pertaining to marine pollution drive research for improved power generation. Fuel cells, being fuel efficient and environmentally friendly, could provide a desirable option and suitable alternative to conventional propulsion systems based on fossil fuels or even nuclear fission. Fuel cells are becoming fast a mature technology and employed in many various other areas. Flexibility of special purpose watercraft, power autonomy and modularity can all benefit from the use of fuel cells. Specifically, proton exchange membrane fuel cells are considered among the most promising options for marine propulsion applications. Switching converters are the common interface intermitted between fuel cells and the load in order to provide a stable regulated voltage. DC-DC converters have been widely used since the advent of semiconductors. These devices are typically adopted to accomplish voltage regulation tasks for a multitude of applications: from renewable energy power-plants to military, medical and transportation systems. Nonetheless voltage regulators exhibit the need for consistent closed- and open-loop control. Most common approaches are PID controllers, sliding mode controllers and artificial neural networks that are considered in this work. An artificial neural network (ANN) is an adaptive, often nonlinear system that learns to perform a functional mapping from data. In our approach, a typical example of a fuel cell, a power converter outfitted with an ANN controller, and a resistive load configuration is investigated. Simulation studies are crucial in power electronics to essentially predict the behavior of the device before any hardware implementation. General requirements, design specification together with control strategies can be iteratively tested using computer simulations. This paper shows the simulation results of the full system behavior, as described above, under dynamic conditions. Initially, an open-loop simulation of the system is performed. Next, an appropriately trained ANN is incorporated to the switching model of the DC-DC converter to perform simulations for validation. Conversely, during design and calibration of the ANN controller, instead of the switching model of the DC-DC converter, a trained ANN equivalent is employed.

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Murakami, Hidenori, Oscar Rios, and Ardavan Amini. "A Mathematical Model With Preliminary Experiments of a Gyroscopic Ocean Wave Energy Converter." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51163.

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Global attempts to increase generation of clean and reproducible natural energy have greatly contributed to the progress of solar, wind, biomass, and geothermal energy generation. To meet the goal set by the Renewable Portfolio Standards (RPS) in the United States, it is advisable for several of the coastal states to tap into the least explored resource: ocean-wave energy. There are many advantages to ocean-wave energy generation. First, the energy per unit area is 20 to 30 times larger compared with solar and five to ten times larger when compared to wind energy. Second, waves are more easily predicted than wind. Currently, there are several challenges with capturing ocean energy: With respect to the environment, noise pollution and effects on marine life need to be taken into consideration; with respect to design, ocean-wave power generators need to withstand large waves due to hurricanes and be designed to lessen visual pollution. There are various methods and devices used to capture ocean wave energy. Point absorbers, such as PowerBuoy, can harness vertical or heaving motion into electricity while attenuators like Pelamis use the induced movement of its joints from the incoming waves. Unfortunately, many have few parameters that can be varied to optimize power generation and or suffer from the various challenges mentioned above. The gyroscopic ocean wave energy converter harnesses the rocking or pitching motion induced by the ocean waves and converts it into rotary motion that is then fed to a generator. Furthermore, it is a fully enclosed floating device that has several parameters that can be varied to optimize power output. Previous work has demonstrated the viability of such a device, but the theoretical modeling of these converters is still in its infancy compared to that of other ocean wave energy converters. The objective of the research presented is to fully understand the mechanisms of power generation in the gyroscopic ocean wave energy converter. Using the moving frame method, a mathematical model of the device is developed. The nonlinear equations of motion are derived through the use of this novel method and then solved numerically. The results are then used to optimize the system and identify key parameters and their effect on the output power generated. Additionally, the resulting equations serve as a tool for identifying an appropriate control strategy for the system. Finally, a scale model of a gyroscopic ocean wave energy converter is developed to validate the equations of motion that have been derived.

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Shabat, Dan. "How Implementation of Retrofits Required by the Clean Air Act Amendments of 1990 Affects Waste-to-Energy Facility Operations, Plant Efficiency and Finances." In 11th North American Waste-to-Energy Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/nawtec11-1675.

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This paper considers the direct and indirect impacts on facility operations and financial performance resulting from the retrofits required to comply with the tighter emissions standards and more stringent operating requirements imposed by the Clean Air Act Amendments of 1990 (CAAA). While all large municipal waste combustors (>250 tons per day) and many smaller units (>250 TPD) have already made the initial financial and operational adjustments required by CAAA-induced changes, many small combustors preparing to comply with the Subpart BBBB requirements, have yet to experience these changes. Since most large WTE facilities only began operating under the new CAAA scenario during or shortly before December 2000, the long-term cost impacts of these changes are only now becoming clear. The Subpart BBBB standards are nearly identical to the standards imposed on large combustors. Each existing WTE facility operator affected by Subpart BBBB must determine whether the standards can be met with existing air pollution control devices and existing emission monitoring equipment, or if a facility retrofit is required. If a facility retrofit is required, the economics of continued operation as compared to alternative disposal options must be considered.

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Grujić, Nikola Z., and Branko Miljanović. "MACROZOOBENTHOS FUNCIONAL FEEDING GROUPS RATIOS AS INDICATORS OF THE RIVER IBAR'S MIDDLE COURSE ECOSYSTEM CHARACTERISTICS." In 53rd Annual Conference of the Serbian Water Pollution Control Society. SERBIAN WATER POLLUTION CONTROL SOCIETY, 2024. http://dx.doi.org/10.46793/voda24.129g.

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The analysis of the functional feeding groups (FFG) of macrozoobenthos shows sensitivity both to hydrological and biological changes, as well as to those caused by anthropogenic action. Certain FFG ratios reflect certain ecosystem parameters. The obtained results indicate that the mean flow of the Ibar River deviates from the trends defined in the river continuum concept and the trophic flow theory. Possible reasons are high anthropogenic influence and a variable river regime in the middle course.

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Anson, D., W. J. Sheppard, and W. P. Parks. "Impact of Ceramic Components in Gas Turbines for Industrial Cogeneration." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-393.

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A development thrust for the adoption of ceramic components in industrial gas turbines, now being sponsored by the U.S. Department of Energy, may have a considerable impact on the growth rate and ultimate capacity of the cogeneration sector. The economic justification for cogeneration rests on the ability to undercut the cost of purchased power after taking credit for the useful heat recovery, and it is frequently marginal after consideration of fuel, maintenance, and pollution control devices. After reviewing briefly the factors contributing to the economic viability of cogeneration systems, this paper presents arguments to show how the use of ceramics in industrial gas turbine can be instrumental in reducing installation and operating costs. Improved gas turbines based on ceramic materials technology also will provides means for meeting environmental protection requirements without the use of back end flue gas treatment, and will be able to utilize byproduct industrial gaseous and liquid fuels more effectively. These improvements can increase substantially the economic return from cogeneration systems, and are expected to result in increased cogeneration capacity and a sustained market for industrial gas turbines. Predictions are made of the size of the U.S. industrial gas turbine cogeneration market. The annual fuel savings resulting from displacement of utility generation capacity could amount to 2 × 1017 joules (2 × 1014 Btu’s) by the year 2010.

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