A Discussion on recent advances in heavy electrical plant - Superconducting machines - a new era for the electrical power industry

1973 ◽  
Vol 275 (1248) ◽  
pp. 77-84 ◽  
Keyword(s):  
New Technology ◽  
Electrical Power ◽  
Industrial Applications ◽  
Propulsion Systems ◽  
Successful Development ◽  
New Era ◽  
Marine Propulsion ◽  
Short Period ◽  
Under Construction ◽  
Changing Attitudes

This paper outlines the development of superconducting d.c. machines at I.R.D. where most of the work to date has been undertaken. Particular emphasis will be placed upon the industrial applications for these machines and the paper contains illustrations of the superconducting marine propulsion systems now under construction. The object of the presentation is to demonstrate that superconducting d.c. machines are now available for industrial application after a relatively short period of development. The paper also indicates the substantial advantages to be gained from the successful development of superconducting a.c. generators. The work which is necessary before these machines may be put into production will be discussed by consideration of the principal problem areas. Finally, conclusions are drawn on the present status of superconducting machines and the changing attitudes in industry towards this new technology.

Naval Hybrid Power Take-Off and Power Take-In – Lessons Learnt and Future Advances

2018 ◽  
Author(s):  
M Benatmane ◽  
B Salter
Keyword(s):  
Electrical Power ◽  
Maritime Industry ◽  
Propulsion Systems ◽  
Systems Architecture ◽  
Hybrid Propulsion ◽  
Leading Role ◽  
Lessons Learnt ◽  
Marine Industry ◽  
Operational Systems ◽  
Great Pressure

With the ever tightening of budgets and legislation, new vessel builds are facing tough times.  The future maritime industry requires more efficient vessels to minimise ship operational costs with cleaner technologies that meet stringent environment regulations, reduce greenhouse gas emissions, specifically carbon emissions. Emissions reduction continues to be high on the agenda for the marine industry, it is responsible for about 2.5 percent of global greenhouse emissions1 and is under great pressure to reduce its environmental impact. With pressure comes the opportunity to incentivize innovation, developments and implementation of energy efficient measures, both design and operational. Naval propulsion systems are no different from other industries, and the industry is exploring ways to optimise propulsion and electrical power generation systems architecture for better performance and efficiency. Electric technology plays a leading role. The paper will: Provide a brief overview about the hybrid propulsion concept, with key electrical, mechanical qualities and issues. Describe different designs configurations and performances of hybrid propulsion systems from demonstrated and operational systems in the commercial and naval world. Cover the lessons learnt in technologies and controls used on such systems. Examine future architectures including energy storage and explore the benefits and the flexibility these can bringto the hybrid propulsion sphere.

scholarly journals The Outlook of the Development of Innovative Products from Biocompatible Natural Spider Silk in the Beauty Thread-Lifting Industry

2021 ◽  
Author(s):  
Chen Qing ◽  
Qi-yan Li ◽  
Nan-nan Xue ◽  
Shi-meng Yuan ◽  
Chuan-jun Liu ◽  
...  
Keyword(s):  
Spider Silk ◽  
New Technology ◽  
Quick Recovery ◽  
Facial Beauty ◽  
Absorbable Sutures ◽  
Short Period ◽  
Innovative Products ◽  
Thread Lift ◽  
Novel Material ◽  
Lifting Techniques

Abstract Embedding thread lift rhytidectomy, also known as “thread lifting” in China, with the natures of simple operation, less trauma and quick recovery, is progressively used in clinical practice as a new technology of face lifting. Herewith, a brief introduction of the previous advances of thread lifting techniques and materials in the facial beauty industry, combined with the discussion on various types of sutures, common complications, and the site of actions were provided. The main limitations of present thread lifting material include: (1) the use of non-absorbable sutures is liable to cause allergies and a series of complications; (2) the absorbable sutures are easily degradation, and people need to reshape in a relatively short period. Therefore, the high biocompatible spider silk was proposed as a novel material of thread lifting suture and related devices, the advantages and preliminary achievements on spider silk were also addressed. Graphic Abstract

scholarly journals Teaching Psychomotor Skills in a Virtual Environment: An Educational Case Study

2021 ◽  
Vol 11 (9) ◽  
pp. 537
Author(s):  
Laura Plummer ◽  
Lesley Smith ◽  
Elizabeth Cornforth ◽  
Shweta Gore
Keyword(s):  
Physical Therapy ◽  
Virtual Environment ◽  
Clinical Skills ◽  
New Technology ◽  
Psychomotor Skills ◽  
Coaching Model ◽  
Therapy Program ◽  
Short Period ◽  
Rapid Transition

In March 2020, most physical therapy schools across the globe transitioned to online learning in response to the COVID-19 pandemic. This change posed unique challenges not only because it required adapting to new technology in a short period but, more importantly, it involved developing ways to teach hands-on psychomotor and clinical skills virtually while maintaining the quality of instruction. In response to the rapid transition, the physical therapy program at MGH Institute of Health Professions (IHP)designed and implemented a novel and effective coaching model to address the challenges. The model was developed based on experiential learning theory, constructivism, a coaching framework, and andragogical principles of feedback and reflection. Not only did the model meet its objectives of effectively teaching basic psychomotor skills in the virtual environment, but it may also have andragogical benefits that can be applied to traditional face-to-face methods. This case study describes the theoretical underpinning of the model, its development and implementation, the perceived effectiveness for learning psychomotor skills in a virtual environment, and the potential for broader relevance to future models of physical therapy education.

scholarly journals Prospective Smart Distribution Substation in Bangladesh: Modeling and Analysis

2021 ◽  
Vol 13 (19) ◽  
pp. 10904
Author(s):  
Abdul Hasib Siddique ◽  
Mehedi Hasan ◽  
Sharnali Islam ◽  
Khalid Rashid
Keyword(s):  
Distributed Generation ◽  
Fossil Fuel ◽  
New Technology ◽  
Electrical Power ◽  
Electrical Network ◽  
Power Network ◽  
Major Focus ◽  
Modeling And Analysis ◽  
Generation Structure ◽  
Smart Substation

Being one of the fastest-growing economies in the world, Bangladesh needs to upgrade its electrical network and aim to reduce dependency on fossil fuel-based energy. For the aging and ever-expanding power network, it is necessary to have a smart substation in order to provide reliable, affordable, and sustainable electrical power. As Bangladesh is looking to integrate Distributed Generation (DG) in the power system, it is high time to think about integrating a smart distribution substation into its power network. In this paper, an investigation of the current power generation structure of Bangladesh was conducted and is described. The major focus was given to the upgradation of the existing substation and distribution setup of Bangladesh by providing suitable architectures, technologies, and communication protocols. Detailed studies of Bangladesh’s prospects to incorporate the new technology and renewable energy into its power network are discussed. ETAP was used to simulate the prospective system to show the feasibility of the prospective smart distribution substation in Bangladesh’s power network.

Laser Additive Manufacturing in Industry 4.0

2021 ◽  
pp. 729-754
Author(s):  
Christ P. Paul ◽  
Arackal N. Jinoop ◽  
Saurav K. Nayak ◽  
Alini C. Paul
Keyword(s):  
Additive Manufacturing ◽  
Industry 4.0 ◽  
High Performance ◽  
Industrial Revolution ◽  
Developing Economies ◽  
New Technology ◽  
Industrial Applications ◽  
Laser Additive Manufacturing ◽  
Global Status ◽  
Feature Based Design

Additive manufacturing is one of the nine technologies fuelling the fourth industrial revolution (Industry 4.0). High power lasers augmented with allied digital technologies is changing the entire manufacturing scenario through metal additive manufacturing by providing feature-based design and manufacturing with the technology called laser additive manufacturing (LAM). It enables the fabrication of customized components having complex and lightweight designs with high performance in a short period. The chapter compiles the evolution and global status of LAM technology highlighting its advantages and freedoms for various industrial applications. It discusses how LAM is contributing to Industry 4.0 for the fabrication of customized engineering and prosthetic components through case studies. It compiles research, development, and deployment scenarios of this new technology in developing economies along with the future scope of the technology.

Application of Artificial Intelligence to Gearbox Fault Diagnosis

2016 ◽  
pp. 536-562
Author(s):  
Anand Parey ◽  
Amandeep Singh Ahuja
Keyword(s):  
Artificial Intelligence ◽  
Fault Diagnosis ◽  
Power Plants ◽  
Human Life ◽  
Propulsion Systems ◽  
Marine Propulsion ◽  
Rotary Machines ◽  
Domestic Appliances ◽  
Financial Losses ◽  
Significant Milestone

Gearboxes are employed in a wide variety of applications, ranging from small domestic appliances to the rather gigantic power plants and marine propulsion systems. Gearbox failure may not only result in significant financial losses resulting from downtime of machinery but may also place human life at risk. Gearbox failure in transmission systems of warships and single engine aircraft, beside other military applications, is unacceptable. The criticality of the gearbox in rotary machines has resulted in enormous effort on the part of researchers to develop new and efficient methods of diagnosing faults in gearboxes so that timely rectification can be undertaken before catastrophic failure occurs. Artificial intelligence (AI) has been a significant milestone in automated gearbox fault diagnosis (GFD). This chapter reviews over a decade of research efforts on fault diagnosis of gearboxes with AI techniques. Some of areas of AI in GFD which still merit attention have been identified and discussed at the end of the chapter.

Realigning Governance

2005 ◽  
pp. 250-288 ◽  
Author(s):  
Donald G. Lenihan
Keyword(s):  
New Technology ◽  
Information And Communications Technologies ◽  
Efficiency Gains ◽  
New Era ◽  
The Public ◽  
Communications Technologies ◽  
Major Transformation ◽  
Expected Benefits ◽  
The Right ◽  
Dot Com

In this chapter, the author acknowledges that over the last few decades, information and communications technologies (ICTs) have progressed at a remarkable pace. By the mid-1990s, the new technology had been used to engineer a major transformation of the private sector, reshaping markets and the basic building block of the modern economy: the corporation. Likewise, enthusiasts predicted that the public sector was about to go through a similar transformation. A new era in government was said to be dawning. For some, electronic- or e-government promised to transform government operations leading to major “efficiency gains” in service delivery. But e-government is proving more difficult and costly than first thought and the expected benefits have been slow to materialize. With some notable exceptions, the efficiency gains have been mixed. The boom in e-commerce was short-circuited by the dot-com bust. Is the bloom coming off the e-government rose? This chapter tries to shed more light on the pertinent issues and reflect a broader vision that e-government is about the transformation of government. A firm commitment from decision makers to think through the issues and steer the right course is critical or e-government could easily lose momentum or veer off course.

scholarly journals An Experimental Study on Plastic Blended Bituminous Concrete Mix Roads

2018 ◽  
Vol 7 (3.35) ◽  
pp. 37
Author(s):  
T. Sarada ◽  
G. Sreeja
Keyword(s):  
Coming Out ◽  
Plastic Material ◽  
New Technology ◽  
Plastic Waste ◽  
Partial Replacement ◽  
New Era ◽  
Pet Bottles ◽  
The People ◽  
Concrete Mix ◽  
Bituminous Concrete

In this new era there are lot of changes are onaerved.But new materials and practices are not coming out that much. Some of the people uses some partial replacement of bitumen and tar which gives some satisfactory results. But later investigations prove that all those materials are not exhibits required properties in all aspects. In that time investigators turn their eye on the recycling materials like rubber and plastic. They noticed that both materials gives the satisfactory results. On the other hand the usage of plastic (polyethylene bags, pet bottles, polystyrene and other plastic products) products increases day by day, that leads to lot of pollution due to plastic waste. This plastic material takes hundreds of years to decompose in the soil. Hence they become complicated to environment. This plastic waste stops the percolations of rain water in to the soil and affects the drainage property of soil. It also damages the soil fertility.A new technology introduced to usages of plastic waste in bitumen to strengthen the bituminous concrete mix and increase the load bearing strength. It will help to reduce the waste plastic content and also make the pavement more durable and strong, economical also 

Model-Based Calibration of a Biogas Engine Control System

2012 ◽  
Author(s):  
Michael Flory ◽  
Joel Hiltner ◽  
Clay Hardenburger
Keyword(s):  
Control System ◽  
Natural Gas ◽  
Electrical Power ◽  
Engine Performance ◽  
Operating Conditions ◽  
High Quality ◽  
Model Based ◽  
Crank Angle ◽  
Short Period ◽  
Exhaust Gas Emission

Pipeline natural gas composition is monitored and controlled in order to deliver high quality, relatively consistent gas quality in terms of heating value and detonation characteristics to end users. The consistency of this fuel means gas-fired engines designed for electrical power generation (EPG) applications can be highly optimized. As new sources of high quality natural gas are found, the demand for these engines is growing. At the same time there is also an increasing need for EPG engines that can handle fuels that have wide swings in composition over a relatively short period of time. The application presented in this paper is an engine paired with an anaerobic digester that accepts an unpredictable and varying feedstock. As is typical in biogas applications, there are exhaust stream contaminants that preclude the use of an oxygen or NOx sensor for emissions feedback control. The difficulty with such a scenario is the ability to hold a given exhaust gas emission level as the fuel composition varies. One challenge is the design of the combustion system hardware. This design effort includes the proper selection of compression ratio, valve events, ignition timing, turbomachinery, etc. Often times simulation tools, such as a crank-angle resolved engine model, are used in the development of such systems in order to predict performance and reduce development time and hardware testing. The second challenge is the control system and how to implement a robust control capable of optimizing engine performance while maintaining emissions compliance. Currently there are limited options for an OEM control system capable of dealing with fuels that have wide swings in composition. Often times the solution for the engine packager is to adopt an aftermarket control system and apply this in place of the control system delivered on the engine. The disadvantage to this approach is that the aftermarket controller is not calibrated and so the packager is faced with the task of developing an entire engine calibration at a customer site. The controller must function well enough that it will run reliably during plant start-up and then eventually prove capable of holding emissions under typical operating conditions. This paper will describe the novel use of a crank-angle resolved four-stroke engine cycle model to develop an initial set of calibration values for an aftermarket control system. The paper will describe the plant operation, implementation of the aftermarket controller, the model-based calibration methodology and the commissioning of the engine.

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