scholarly journals Dynamics Analysis and Control Optimization of Devices for Power Generation From Fluid Flow

2020 ◽  
Author(s):  
◽  
Mārtiņš Irbe
Keyword(s):  
Wind Tunnel ◽  
Energy Savings ◽  
Optimization Criterion ◽  
Production Equipment ◽  
Robotic Fish ◽  
Negative Effects ◽  
Control Optimization ◽  
Ice Surface ◽  
Race Track ◽  
And Control

ss. In addition, the positive or negative effects of vibrations on the skeleton as it slides over the ice surface are considered. In these studies, the optimization criterion is energy savings on the race track. In turn, in solving energy extraction problems (in the second part of the work) a new method (theory) is developed, which helps to easily perform analysis, optimization and synthesis tasks for object interaction with liquids, if there is translational, rotational or complete motion of objects. shaped bodies in a fluid (liquid, gas), if it is possible to mathematically describe the interaction surfaces. The method was tested with computer programs and experimentally in the wind tunnel “Armfield”. The third part of the work deals with several other studies of fluid dynamics, including: – studied the actuator of robotic fish movement; – energy production equipment from robotic fish tail fin oscillations was analyzed and synthesized; – parametric shape optimization for SUP board drive fin motor cover was performed; – practical experiments were performed for a double valve in a wind tunnel and they were compared (validated) with a mathematical model.

Liquid Pipeline Capacity Optimization Through Pressure Control

2008 ◽  
Author(s):  
Roger W. Shirt ◽  
Fernando Otero
Keyword(s):  
Energy Savings ◽  
Pressure Control ◽  
Batch Size ◽  
Preliminary Review ◽  
Control Optimization ◽  
Included Review ◽  
Program Costs ◽  
One Year ◽  
Pump Stations ◽  
And Control

In 2006/2007 Enbridge Pipelines undertook a pressure control optimization program as part of an overall effort to maximize throughput on a 34″ batched heavy crude pipeline. Higher throughputs required simultaneous operation of both pump units at intermediate stations. This mode of operation had not been previously achieved on a reliable basis due to the occurrence of line instabilities. Pressure control optimization procedures developed by Enbridge and control industry partners over the past 5 years were employed. Program scope included review and optimization of pressure control systems at 24 pump stations and 3 delivery sites. A preliminary review of pressure control valves established their suitability for anticipated service conditions. No other significant equipment purchases were required to execute the project. Program results are: • Intermediate stations are now reliably operated with both pump units simultaneously engaged; • A minimum 3.5% increase in pipeline sustained capacity is attributed by Enbridge to the pressure control optimization efforts; • PCV pressure drop reductions were achieved at most mainline pump stations resulting in greater than $500,000 (US) per year in pumping energy savings; • A 32% reduction in delivered batch size over/short volumes was achieved at one delivery site; • Operators report a significant increase pipeline reliability, with historical data demonstrating a 50% reduction in one indicator of operator burden; • Program costs were recovered in less than one year of operation. Similar pressure control optimization efforts are currently being undertaken on other pipelines within Enbridge’s network.

The Effects of Corporate Ownership on Public Accountants' Professionalism and Ethics

2002 ◽  
Vol 16 (2) ◽  
pp. 109-124 ◽  
Author(s):  
William E. Shafer ◽  
D. Jordan Lowe ◽  
Timothy J. Fogarty
Keyword(s):  
Current Trend ◽  
Auditor Independence ◽  
Corporate Ownership ◽  
Negative Effects ◽  
Public Accounting ◽  
Corporate Acquisitions ◽  
Accounting Professionals ◽  
Research Questions ◽  
And Control ◽  
First Time

The current trend toward corporate acquisitions of CPA firms poses potential threats to the autonomy and ethical standards of public accounting professionals. This recent consolidation movement suggests that for the first time a significant number of public accounting professionals are subject to the supervision and control of nonprofessionals. In addition to acknowledging the potential threats to auditor independence and objectivity, this paper suggests that these new organizational arrangements for the provision of public accounting services have other negative effects on professionalism and ethics such as desensitizing CPAs to traditional professional values, and subverting professional institutions to the goals of corporate employers. This paper develops a framework that identifies several specific research questions related to the effects of corporate ownership on professionalism and ethics in public accounting.

Energy System Control Optimization Criterion Development

2020 ◽  
Author(s):  
Olga Zalunina ◽  
Alla Kasych ◽  
Vita Ogar ◽  
Andrii Perekrest ◽  
Serhii Serhiienko ◽  
...  
Keyword(s):  
Energy System ◽  
Optimization Criterion ◽  
System Control ◽  
Control Optimization ◽  
Criterion Development

scholarly journals Fuel metering and control optimization based on combustion state diagnosis

2020 ◽  
Vol 594 ◽  
pp. 012013
Author(s):  
X H Wang ◽  
H T Chen ◽  
X X Zhu ◽  
J L Zhang ◽  
W L Liu ◽  
...  
Keyword(s):  
Control Optimization ◽  
And Control ◽  
State Diagnosis

scholarly journals Real-World Implementation of an ICT-Based Platform to Promote Energy Efficiency

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2416
Author(s):  
Marina Dorokhova ◽  
Fernando Ribeiro ◽  
António Barbosa ◽  
João Viana ◽  
Filipe Soares ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Real World ◽  
Energy Savings ◽  
Quality Parameters ◽  
Horizon 2020 ◽  
Flexible Devices ◽  
Information And Communication ◽  
Energy Consuming ◽  
And Behavior ◽  
And Control

The energy efficiency requirements of most energy-consuming sectors have increased recently in response to climate change. For buildings, this means targeting both facility managers and building users with the aim of identifying potential energy savings and encouraging more energy-responsible behaviors. The Information and Communication Technology (ICT) platform developed in Horizon 2020 FEEdBACk project intends to fulfill these goals by enabling the optimization of energy consumption, generation, and storage and control of flexible devices without compromising comfort levels and indoor air quality parameters. This work aims to demonstrate the real-world implementation and functionality of the ICT platform composed of Load Disaggregation, Net Load Forecast, Occupancy Forecast, Automation Manager, and Behavior Predictor applications. Particularly, the results obtained by individual applications during the test phase are presented alongside the specific metrics used to evaluate their performance.

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