Coal power flexibility, energy efficiency and pollutant emissions implications in China: A plant-level analysis based on case units

Purpose – Energy use in urban areas has turned a subject of local and worldwide interest over the last few years, especially emphasized by the correlated greenhouse gases emissions. The purpose of this paper is to analyse the overall energy efficiency potential and emissions resulting from integrated solutions in urban energy planning, in the scale of districts and neighbourhoods in Brazil. Design/methodology/approach – The approach is based on the description and the application of a method to analyse energy performance of urban areas and support their planning. It is a quantitative bottom-up method and involves urban morphology, urban mobility, buildings and energy supply systems. Procedures are applied to the case study of Agua Branca urban development area, located in Sao Paulo, Brazil. Findings – In the case of Agua Branca area, energy efficiency measures in buildings have shown to be very important mostly for the buildings economies themselves. For the area as a whole, strategies in promoting public transport are more effective in terms of energy efficiency and also to decrease pollutant emissions. Originality/value – Literature review has shown there is a lack of approaches and procedures able to support urban energy planning at a community scale. The bottom-up method presented in this paper integrates a plenty of disaggregated and multisectoral parameters at the same stage in urban planning and shows that is possible to identify the most promising actions by building overall performance indexes.

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Optimizing Pulse Combustion Parameters in Carbon Anode Baking Furnaces for Aluminum Production

Volume 8: Heat Transfer and Thermal Engineering ◽

10.1115/imece2019-10500 ◽

2019 ◽

Author(s):

Abdul Raouf Tajik ◽

Tariq Shamim ◽

Ahmed F. Ghoniem ◽

Rashid K. Abu Al-Rub

Keyword(s):

Energy Efficiency ◽

Response Surface ◽

Oxygen Concentration ◽

Fractional Factorial ◽

Pollutant Emissions ◽

Aluminum Production ◽

Carbon Anode ◽

Physical Parameters ◽

Inlet Temperature ◽

Pulse Combustion

Abstract Pulsating flame jets have been widely used in open-top carbon anode baking furnaces for aluminum electrolysis. Reducing energy consumption and pollutant emissions are still major challenges in baking (heat-treatment) carbon anode blocks. It is also of immense significance to bake all the anodes uniformly irrespective of their position in the furnace. Baking homogeneity can be enhanced noticeably by optimizing anode baking operational, geometrical, and physical parameters. In the present study, CFD simulations are combined with a response surface methodology to investigate and optimize the effects of pulse pressure, pulse frequency, and mainstream inlet oxygen concentration and mainstream inlet temperature. Two-levels half fractional factorial design with a center point is employed. It is perceived that pulse combustion with short pulse time and high momentum results in significant enhancement of the anode baking furnace energy efficiency. The temperature homogeneity is also significantly improved. It is found that the oxygen concentration is statistically the most significant parameter on NOx and soot formations, followed by the fuel flow rate. For NOx formation, air inlet oxygen concentration has a strong interaction with pulse duration. Coupling CFD models with the response surface methodologies demonstrated great potential in multi-objective optimization of the anode baking process with enhanced energy efficiency and baking uniformity.

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Improving the Energy Efficiency of Stoves To Reduce Pollutant Emissions from Household Solid Fuel Combustion in China

Environmental Science & Technology Letters ◽

10.1021/acs.estlett.6b00324 ◽

2016 ◽

Vol 3 (10) ◽

pp. 369-374 ◽

Cited By ~ 28

Author(s):

Qing Li ◽

Jingkun Jiang ◽

Juan Qi ◽

Jianguo Deng ◽

Deshan Yang ◽

...

Keyword(s):

Energy Efficiency ◽

Solid Fuel ◽

Fuel Combustion ◽

Pollutant Emissions ◽

Solid Fuel Combustion

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Traditional Thick Concrete Floor Slabs – an Obstacle to the Flexibility, Energy Efficiency and Seismic Safety

Tehnicki vjesnik - Technical Gazette ◽

10.17559/tv-20180419101316 ◽

2019 ◽

Vol 26 (6) ◽

Keyword(s):

Energy Efficiency ◽

Seismic Safety ◽

Concrete Floor ◽

Floor Slabs ◽

Flexibility Energy

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Energy Efficiency Potential for China’s Cement Industry: A Bottom-Up Technology-Level Analysis

Leveraging Technology for a Sustainable World ◽

10.1007/978-3-642-29069-5_16 ◽

2012 ◽

pp. 91-96

Author(s):

Ali Hasanbeigi ◽

William Morrow ◽

David Fridley ◽

Eric Masanet ◽

Tengfang Xu ◽

...

Keyword(s):

Energy Efficiency ◽

Cement Industry ◽

Bottom Up ◽

Energy Efficiency Potential ◽

Technology Level ◽

Level Analysis

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Industry 4.0 and basic principles of a new architecture for control of power plants processes

SHS Web of Conferences ◽

10.1051/shsconf/20184400008 ◽

2018 ◽

Vol 44 ◽

pp. 00008

Author(s):

Nikolay Amosov ◽

Alexander Andryushin ◽

Edik Arakelyan ◽

Anatoliy Kosoy

Keyword(s):

Process Control ◽

Industry 4.0 ◽

Power Plants ◽

Thermal Power ◽

Economic Effect ◽

Basic Principles ◽

Level Of Automation ◽

Software And Hardware ◽

Plant Level ◽

Level Analysis

The results of the level analysis of intellectuality and efficiency of up-to-date automated process control systems (APCS) based on software and hardware systems (SHS) are presented. It was demonstrated that, despite the widespread implementation of modern software and hardware systems during the construction of new APCS and upgrading the existing ones for thermal power plants (TPP), improvement of the process control quality, optimization of their modes and parameters take place generally at the equipment and power unit level and to a far lesser extent – at the power plant level and as a result – insufficient level of automation and low technical and economic efficiency. Another conclusion from the performed analysis – when implementing control algorithms in the APCS based on the up-to-date SHS, their wide data and software capabilities are not fully used. The main ways of further APCS improvement for the purpose of further increasing of their efficiency and the level of intelligence of SHS based APCS of power plants are presented. The possibility of their implementation is considered with application of the basic principles laid in the concept Industry 4.0. The possible economic effect from the implementation of the proposed solutions for increasing the intelligence and efficiency of the SHS based APCS was assessed. A brief description of the configuration of the proposed SHS based control system is given.

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International manufacturing network: past, present, and future

International Journal of Operations & Production Management ◽

10.1108/ijopm-03-2013-0146 ◽

2015 ◽

Vol 35 (3) ◽

pp. 392-429 ◽

Cited By ~ 61

Author(s):

Yang Cheng ◽

Sami Farooq ◽

John Johansen

Keyword(s):

Original Data ◽

Academic Community ◽

Future Research ◽

Data Set ◽

Content Type ◽

Research Themes ◽

Future Research Directions ◽

Plant Level ◽

Manufacturing Network ◽

Level Analysis

Purpose – The purpose of this paper is to examine, and present a comprehensive review of, the existing literature on the international manufacturing network (IMN). Design/methodology/approach – The original data set used for reviewing the IMN literature consisted of 107 articles selected from 21 journals: more specifically, 40 articles are concerned with plant-level analysis, and 67 articles are related to IMN-level analysis. The literature is simultaneously reviewed by two researchers. The relevance and contribution of each reviewed paper is discussed and mutually agreed upon. Findings – The paper highlights the different concepts related to IMN and traces the evolution of IMN-related research. Based on two levels of analysis (i.e. plant and network), this paper further reviews and discusses the IMN-specific literature in detail to determine the number of IMN articles published across the journals, the dominant methodologies employed, and the research focus reflected in IMN studies. A research trajectory is finally developed to provide an integrated and intuitional view on the development of IMN research. Originality/value – This is the first effort that has been made towards thoroughly investigating the existing literature on IMN, aiming to trace different concepts related to IMN from a historical perspective, to review and discuss the IMN-specific literature in detail, to provide an overview of the evolution trajectory of different existing IMN research themes, and to propose future research directions. Keeping in mind the growing importance of IMN for practitioners as well as the academic community, this study provides a timely overview of existing and emerging IMN research themes.

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