162 Research and development of high efficiency engine electric generating system : Analysis estimate of mechanical characteristic ICELG

2011 ◽  
Vol 2011.60 (0) ◽  
pp. _162-1_-_162-2_
Author(s):  
Yuta TAKEDA ◽  
Hiroki ISHIKAWA ◽  
Takeo OOMICHI
Keyword(s):  
Research And Development ◽  
Mechanical Characteristic ◽  
System Analysis ◽  
High Efficiency ◽  
Generating System ◽  
Efficiency Engine

An Application and Research of Gray-Relation for Color Classification in Dyeing Textile

2013 ◽  
Vol 694-697 ◽  
pp. 2881-2885
Author(s):  
Hai Yan Wang ◽  
Jian Xin Zhang
Keyword(s):  
System Analysis ◽  
High Efficiency ◽  
Information Management System ◽  
Space Distribution ◽  
Color Classification ◽  
Uniform Sampling ◽  
Forecast Precision ◽  
Internal Instability ◽  
The Stability

Dyeing textile’s information management system is the basis of accurate classification of color， machine studying methods have became a popular area of research for application in color classification. Traditional classification methods have high efficiency and are very simple ， but they are dependent on the distribution of sample spaces. If the sample data properties are not independent， forecast precision will been affected badly and internal instability will appear. An application of Gray-Relation for dyeing textile color classification has been designed， which offsets the discount in mathematical statistics method for system analysis. It is applicable regardless of variant in sample size， while quantizing structure is in agreement with qualitative analysis. On the basis of theoretical analysis， Dyeing textile color classification was conducted in the conditions of random sampling、 uniform sampling and stratified sampling. The experimental results proofs that by using Gray-Relation， dyeing textile color classification does not need to be dependent on sample space distribution， and increases the stability of classification.

Parameters Optimization of Linear Compressor for Refrigerator

2013 ◽  
Vol 331 ◽  
pp. 84-87 ◽  
Author(s):  
Zhi Hai Li ◽  
Yan Liu ◽  
Yuan Zhong
Keyword(s):  
System Analysis ◽  
High Efficiency ◽  
Input Power ◽  
Wire Diameter ◽  
Parameters Optimization ◽  
Free Piston ◽  
Linear Compressor ◽  
Effective Work ◽  
Cylinder Diameter ◽  
System Equations

Recently linear compressor with a free piston is widely paid attention to for its high efficiency. This paper presents parameters optimization of linear compressor used for Refrigerator. The system equations of linear compressor are established through system analysis and solved by variable step Newmark method. The piston movement, current, input power, effective work, resistive loss, damping loss and efficiency are calculated for the optimization from the system equations. Coil wire diameter, stroke and cylinder diameter are important parameters of linear compressor, which have great importance on its performance. The coil wire diameter was changed to find out its affect to loss of resistance. The efficiency of linear compressor and current of the coil are analyzed with the same exhaust volume and different stroke and cylinder diameter. Through the analysis the parameters of the linear compressor are optimized.

scholarly journals Photovoltaic Concentration: Research and Development

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5721
Author(s):  
Sarah El Himer ◽  
Salima El Ayane ◽  
Sara El Yahyaoui ◽  
Jean Paul Salvestrini ◽  
Ali Ahaitouf
Keyword(s):  
Energy Source ◽  
Solar Cells ◽  
Research And Development ◽  
Concentration Ratio ◽  
Recent Progress ◽  
High Efficiency ◽  
Cost Effective ◽  
Optical Elements ◽  
Concise Overview

Concentrator Photovoltaic (CPV) technology, by using efficient optical elements, small sizes and high efficiency multi-junction solar cells, can be seen as a bright energy source to produce more cost-effective electricity. The main and basic idea is to replace the use of expensive solar cells with less expensive optical elements made from different materials. This paper aims to give to the readers a rapid and concise overview of CPV and the main characteristics to be considered when designing a CPV system. It reviews the main optical configurations presented in the literature, their advantages and drawbacks, as well as the recent progress in the concentration ratio and the major performances achieved in the field. The paper considers the more recent works, their optical designs, as well as their optical and electrical performances. It also relates the major achievements on the industrial side with the major milestones in CPV developments.

Research and Development of Practical Industrial Cogeneration Technology in Japan

2000 ◽  
Author(s):  
Toshiaki Abe ◽  
Takashi Sugiura ◽  
Shuji Okunaga ◽  
Katsuhiro Nojima ◽  
Yasukata Tsutsui ◽  
...  
Keyword(s):  
Research And Development ◽  
Gas Turbine ◽  
High Temperatures ◽  
Gas Turbines ◽  
High Efficiency ◽  
Development Project ◽  
Term Operation ◽  
Resistance To Heat

This paper presents an overview of a development project involving industrial cogeneration technology using 8,000-kW class hybrid gas turbines in which both metal and ceramics are used in parts subject to high temperatures in order to achieve high efficiency and low pollution. The development of hybrid gas turbines focuses mainly on the earlier commercialization of the turbine system. Stationary parts such as combustor liners, transition ducts, and first-stage turbine nozzles (stationary blades) are expected to be fabricated from ceramics. The project aims at developing material for these ceramic parts that will have a superior resistance to heat and oxidation. The project also aims at designing and prototyping a hybrid gas turbine system to analyze the operation in order to improve the performance. Furthermore, the prototyped hybrid gas turbine system will be tested for long-term operation (4,000 hours) to verify that the system can withstand commercialization. Studies will be conducted to ensure that the system’s soundness and reliability are sufficient for industrial cogeneration applications.

Low Cost Solar Tracker with High Efficiency in PV Generating System

2014 ◽  
Vol 577 ◽  
pp. 546-550
Author(s):  
Min Tang ◽  
Jing Wang ◽  
Jin Ming Yang
Keyword(s):  
Output Signal ◽  
Simple Structure ◽  
High Efficiency ◽  
Low Cost ◽  
Solar Tracker ◽  
Uv Sensors ◽  
Generating System

This paper describes a low cost solar tracker with high efficiency in PV generating system. The detecting device adopts two ultraviolet (UV) sensors to detect the sun’s position. The output of detecting device is a series of combination signals. And this output signal is directly used to control DC motor’s deflection to sun. No microcontroller is adopted in this design. The simple structure makes this solar tracker reliable and easy implementation.

Research and Development Status of Heat Pump System for Electric Vehicle

2012 ◽  
Vol 178-181 ◽  
pp. 2811-2814
Author(s):  
Guang Hui Zhou ◽  
Yin Fei Li ◽  
Yin Liu
Keyword(s):  
Research And Development ◽  
Electric Vehicle ◽  
Heat Pump ◽  
High Efficiency ◽  
Future Market ◽  
Pump System ◽  
Heat Pump System ◽  
Development Status

Comparing to fuel vehicle, electric vehicle does not apply the heat of the engine as one of the heat resources. Therefore, many heating ideas are proposed to use on Electric vehicle.This paper analyzes the attributes of various heating methods. Heat pump system is the most popular trend of the electric vehicle business, due to the high efficiency. It suggests different heat pump systems, illustrates the trend of future market, and compares the performance of electric vehicle heat pump system using different cryogen.

Advances in the Research and Development of Fuel Cells in China

2004 ◽  
Author(s):  
Chong-Fang Ma ◽  
Hang Guo ◽  
Fang Ye ◽  
Jian Yu
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Research And Development ◽  
Proton Exchange Membrane ◽  
High Efficiency ◽  
Direct Methanol Fuel Cells ◽  
Proton Exchange ◽  
Molten Carbonate ◽  
Direct Methanol ◽  
The Government

As a clean, high efficiency power generation technology, fuel cell is a promising choice of next generation power device. Widely application of fuel cells will make a contribution to save fuels and reduce atmospheric pollution. In recent years, fuel cells science, technology and engineering have attracted great interest in China. There are more and more Chinese scientists and engineers embark upon fuel cell projects. The government also encourages academic institutions and companies to enter into this area. Research and development of fuel cells are growing rapidly in China. There are many chances and challenges in fuel cells’ research and development. The state of the art of research and development of fuel cells in China was overviewed in this paper. The types of fuel cells addressed in this paper included alkaline fuel cells, phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, proton exchange membrane fuel cells and direct methanol fuel cells.

scholarly journals Status of Catalytic Combustion R&D for the Department of Energy Advanced Turbine Systems Program

1999 ◽  
Author(s):  
D. B. Fant ◽  
G. S. Jackson ◽  
H. Karim ◽  
D. M. Newburry ◽  
P. Dutta ◽  
...  
Keyword(s):  
Research And Development ◽  
Catalytic Combustion ◽  
High Efficiency ◽  
Department Of Energy ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Development Status ◽  
Catalyst Durability ◽  
Operational Issues ◽  
The U.S

This paper discusses some of the advanced concepts and research and development associated with implementing catalytic combustion to achieve ultra-low-NOx emissions in the next generation of land-based gas turbine engines. In particular, the paper presents current development status and design challenges being addressed by Siemens Westinghouse Power Corp. for large industrial engines (> 200 MW) and by Solar Turbines for smaller engines (< 20 MW) as part of the U.S. Department of Energy’s (DOE) Advanced Turbine Systems (ATS) program. Operational issues in implementing catalytic combustion and the current needs for research in catalyst durability and operability are also discussed. This paper indicates how recent advances in reactor design and catalytic coatings have made catalytic combustion a viable technology for advanced turbine engines and how further research and development may improve catalytic combustion systems to better meet the durability and operability challenges presented by the high-efficiency, ultra-low emissions ATS program goals.

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