Practical Experience on Optimization of Combustion With Expert Systems From 12 WTE Plants in Europe and China

2012 ◽  
Author(s):  
Asger Danielsen
Keyword(s):  
Process Optimization ◽  
Waste Incineration ◽  
Practical Experience ◽  
Waste To Energy ◽  
Level Control ◽  
Efficient Operation ◽  
Plant Operator ◽  
Optimal Efficiency ◽  
High Level ◽  
Investment Process

Process optimization of Waste to Energy plants (WtE plants) is of particular interest because control performance is crucial for the profitability of the overall operation of the plant. WtE plants represent very large investments and an optimal efficiency in operation is crucial for the return of the investment. Process optimization including optimal control of the abnormal operating situations when the waste quality is out of the normal range is thus very attractive in order to increase the profitability and efficiency of the waste incineration operations. This presentation will describe how high-level control based on expert system can be used in a practical and convenient way to provide a more efficient operation of a WtE plant and provide a capacity increase of 3–6% or more and thereby be a very attractive investment for an existing or new WtE plant operator.

Comparison of trace element mobility from MSWI ash before and after plasma vitrification

2021 ◽  
pp. 0734242X2110115
Author(s):  
Wesley N Oehmig ◽  
Justin Roessler ◽  
Abdul Mulla Saleh ◽  
Kyle A Clavier ◽  
Christopher C Ferraro ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Incineration ◽  
Waste To Energy ◽  
Air Pollution Control ◽  
Plasma Arc ◽  
Municipal Solid Waste Incineration ◽  
Trace Element Mobility ◽  
Before And After ◽  
Air Pollution Control Residues

A common perception of plasma arc treatment systems for municipal solid waste incineration ash is that the resulting vitrified slag is inert from an environmental perspective. Research was conducted to examine this hypothesis and to assess whether reduced pollutant release results from pollutant depletion during the process of the ash with plasma, or encapsulation in the glassy vitrified matrix. The concentrations of four discrete municipal solid waste incineration ash samples before and after plasma arc vitrification in a bench-scale unit were compared. Slag and untreated ash samples were leached using several standardized approaches and mobility among the four metals of interest (e.g. As, Cd, Pb and Sb) varied across samples, but was generally high (as high as 100% for Cd). Comparison across methods did not indicate substantial encapsulation in the vitrified slag, which suggests that reduced pollutant release from plasma arc vitrified slag is due to pollutant depletion by volatilization, not encapsulation. This has significant implications for the management of air pollution control residues from waste-to-energy facilities using plasma arc vitrification.

Simulation facility for development of high level control code at the SSC

1994 ◽  
Vol 352 (1-2) ◽  
pp. 333-335
Author(s):  
G. Bourianoff ◽  
B. Cole ◽  
M. Botlo ◽  
S. Hunt ◽  
A. Romero ◽  
...  
Keyword(s):  
Level Control ◽  
Control Code ◽  
High Level

Financial State of Utilities and Ways to Improve It

2021 ◽  
Vol 26 (1) ◽  
pp. 30-36
Author(s):  
Valentyna Glukhova ◽  
◽  
Kristina Kravchenko ◽  
Keyword(s):  
State Regulation ◽  
Public Utilities ◽  
Financial Policy ◽  
Main Task ◽  
Efficient Operation ◽  
Financial Condition ◽  
Transport Services ◽  
Fixed Assets ◽  
Utility Companies ◽  
High Level

Annotation. Introduction. One of the key tasks of the formation of a socially oriented economy is to ensure a high level and quality of life of the population, which implies the satisfaction of the most necessary needs of citizens in comfortable housing, energy, sanitary and technical, transport services, etc. Satisfaction of the above needs is possible only under the condition of the efficient and uninterrupted functioning of utilities, since the main task of the utilities is to provide the population with heat, water, gas, electricity and other services on which the comfort of housing, the state of human health, the constant mode of operation of enterprises, improvement districts, ecological state of settlements. The efficient operation of enterprises of communal ownership largely depends on their financial condition. Therefore, the study of the development and financial support of public utilities, the effectiveness of their activities is relevant, especially in the context of decentralization. Now, the problems of public utilities require much attention, among which their financial condition is significant. Purpose. The purpose of the work is to analyze and study the financial condition of utilities and develop proposals for its improvement. Results. The article considers, analyzes and compares such indicators of the financial condition of utility companies in some cities of Ukraine as: financial results, depreciation of fixed assets, return on assets, absolute liquidity ratio. Factors influencing the financial results of utilities have been identified. The main ways to improve the financial condition of utilities have been identified. Conclusions. According to the results of the analysis of their financial condition, the prevailing loss, high level of depreciation of fixed assets and low capital productivity of most enterprises in this industry have been determined. The reasons for this situation are the lack of effective directions of financial policy in this area, the imperfection of the regulatory framework and miscalculations in the management of financial resources. The current state of this industry gives grounds to talk about the need to improve the effectiveness of its state regulation in order to solve the basic problems of its socio-economic development.

scholarly journals Robust Tracking Controller for a DC/DC Buck-Boost Converter–Inverter–DC Motor System

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2500 ◽  
Author(s):  
Eduardo Hernández-Márquez ◽  
Carlos Avila-Rea ◽  
José García-Sánchez ◽  
Ramón Silva-Ortigoza ◽  
Gilberto Silva-Ortigoza ◽  
...  
Keyword(s):  
Motor System ◽  
Dc Motor ◽  
Boost Converter ◽  
Differential Flatness ◽  
Robust Tracking ◽  
Level Control ◽  
Tracking Controller ◽  
The One ◽  
High Level ◽  
Better Than

This paper has two aims. The first is to develop a robust hierarchical tracking controller for the DC/DC Buck-Boost–inverter–DC motor system. This controller considers a high level control for the inverter–DC motor subsystems and a low level control for the DC/DC Buck-Boost converter subsystem. Such controls solve the tracking task associated with the angular velocity of the motor shaft and the output voltage of the converter, respectively, via the differential flatness approach. The second aim is to present a comparison of the robust hierarchical controller to a passive controller. This, with the purpose of showing that performance achieved with the hierarchical controller proposed in this paper, is better than the one achieved with the passive controller. Both controllers are experimentally implemented on a prototype of the DC/DC Buck-Boost–inverter–DC motor system by using Matlab-Simulink along with the DS1104 board from dSPACE. According to experimental results, the proposal in the present paper achieves a better performance than the passive controller.

scholarly journals A flexible user-interface for audiovisual presentation and interactive control in neurobehavioral experiments

F1000Research ◽  
2013 ◽  
Vol 2 ◽  
pp. 20
Author(s):  
Christopher T Noto ◽  
Suleman Mazhar ◽  
James Gnadt ◽  
Jagmeet S Kanwal
Keyword(s):  
User Interface ◽  
Data Acquisition ◽  
Digital Signal Processor ◽  
Digital Signal ◽  
Stimulus Presentation ◽  
Cost Effective ◽  
Level Control ◽  
Interactive Control ◽  
High Level ◽  
Behavioral Monitoring

A major problem facing behavioral neuroscientists is a lack of unified, vendor-distributed data acquisition systems that allow stimulus presentation and behavioral monitoring while recording neural activity. Numerous systems perform one of these tasks well independently, but to our knowledge, a useful package with a straightforward user interface does not exist. Here we describe the development of a flexible, script-based user interface that enables customization for real-time stimulus presentation, behavioral monitoring and data acquisition. The experimental design can also incorporate neural microstimulation paradigms. We used this interface to deliver multimodal, auditory and visual (images or video) stimuli to a nonhuman primate and acquire single-unit data. Our design is cost-effective and works well with commercially available hardware and software. Our design incorporates a script, providing high-level control of data acquisition via a sequencer running on a digital signal processor to enable behaviorally triggered control of the presentation of visual and auditory stimuli. Our experiments were conducted in combination with eye-tracking hardware. The script, however, is designed to be broadly useful to neuroscientists who may want to deliver stimuli of different modalities using any animal model.

Tools for Project-Based Active Learning of Amorphous Systems Design: Scenario Prototyping and Cross Team Peer Evaluation

2009 ◽  
Author(s):  
Kosuke Ishii ◽  
Sun K. Kim ◽  
Whitfield Fowler ◽  
Takashi Maeno
Keyword(s):  
Active Learning ◽  
Systems Design ◽  
Practical Experience ◽  
Project Based Learning ◽  
Project Teams ◽  
Societal Needs ◽  
Wide Range ◽  
New Graduate ◽  
Team Project ◽  
High Level

Whereas team project-based learning of engineering design has attracted wide acceptance, it is still rare to see a curriculum that addresses high level societal needs involving diverse students with a wide range of practical experience. Such a curriculum should develop a shared understanding of the use of scenarios for amorphous products and a process to objectively evaluate the project progress while the design concepts mature. This paper describes two key tools that respond to these challenges: 1) scenario prototyping and 2) cross-team project scorecarding. These tools evolved through a collaborative curriculum development of Keio University, MIT, and Stanford in the development of the Active Learning Project Sequence (ALPS), a capstone experience for Keio’s new Graduate School of System Design and Management (SDM). ALPS selected a theme from the “Voice of Society,” according to which the project teams generated solution scenarios, identified requirements, and described the proposed system using appropriate prototypes of not only hardware but other amorphous means as well. The twelve ALPS teams in 2008 addressed the theme “Enhancing the Lives of Seniors in Japan,” which led to more specific scenarios. The paper gives an overview of the ALPS workshop sequence, and describes in detail two key learning modules that were essential in integrating the multi-disciplinary teams: a) scenario prototyping and b) cross-team project scorecarding. These methods are going through further trials in Stanford’s own Design for Manufacturability curriculum involving 10 project teams in the US and Japan.

Mini-review of waste-to-energy related air pollution and their limit value regulations in an international comparison

2021 ◽  
pp. 0734242X2110606
Author(s):  
Isla Hodgkinson ◽  
Roman Maletz ◽  
Franz-Georg Simon ◽  
Christina Dornack
Keyword(s):  
Air Pollution ◽  
Environmental Impact ◽  
Waste Incineration ◽  
Waste To Energy ◽  
Hazardous Substances ◽  
Environmental Pressures ◽  
Best Available Technologies ◽  
Limit Value ◽  
Anthropogenic Processes ◽  
India And China

The concept of circular economy supports mitigation of climate change and other environmental pressures to the planet. Circulating materials in anthropogenic processes come with the risk of accumulating hazardous substances and compounds. In this concept, waste incineration or waste-to-energy (WtE) is a necessary technology to remove these compounds from the life cycle. In this mini-review, contaminants of major importance in the flue gas from waste incineration plants and their environmental impact are discussed. Air pollution of WtE is often seen as the most relevant environmental impact of this treatment option. The emission values parameter set for different countries is presented and compared. The most stringent legally set of emission values could be found in parts of Europe and South Korea. Japan also permits similar strict values when authorising individual incineration plants. In North America, the values are partially less strict as the best available technologies in Europe suggest being possible. Emerging economies, such as India and China, have shown efforts to improve their environmental protection standards but still have room to improve. This could be set in relation to other industrial emitting processes and therefore could be used to assess the relevance of this industry sector to the national emission inventories.

On Software Architecture Processes and their Use in Practice

2014 ◽  
pp. 198-218
Author(s):  
Perla Velasco-Elizondo ◽  
Humberto Cervantes
Keyword(s):  
Software Architecture ◽  
Level Structure ◽  
Practical Experience ◽  
High Quality ◽  
Software Artifact ◽  
High Level ◽  
Architecture Development

Software architecture is a very important software artifact, as it describes a system’s high-level structure and provides the basis for its development. Software architecture development is not a trivial task; to this end, a number of methods have been proposed to try to systematize their related processes to ensure predictability, repeatability, and high quality. In this chapter, the authors review some of these methods, discuss some specific problems that they believe complicate their adoption, and present one practical experience where the problems are addressed successfully.

Policy Technologies for Security Management in Coalition Networks

2011 ◽  
pp. 750-776
Author(s):  
Seraphin B. Calo ◽  
Clare-Marie Karat ◽  
John Karat ◽  
Jorge Lobo ◽  
Robert Craven ◽  
...  
Keyword(s):  
Military Personnel ◽  
Security Management ◽  
Security Requirements ◽  
Security Policies ◽  
Technical Expertise ◽  
Policy Management ◽  
Level Control ◽  
Concrete System ◽  
Human In The Loop ◽  
High Level

The goal of policy-based security management is to enable military personnel to specify security requirements in terms of simple, intuitive goals. These goals are translated into the concrete system settings in a way that the system behaves in a consistent and desirable way. This technology minimizes the technical expertise required by military personnel and automates security management while allowing a high level control by the human in the loop. This chapter describes a framework for managing security policies, and an overview of two prototypes that simplify different aspects of policy management in the context of coalition operations.

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