A novel evaluation method for energy efficiency of process industry— A case study of typical iron and steel manufacturing process

Energy ◽  
2021 ◽  
pp. 121081
Author(s):  
Hongming Na ◽  
Jingchao Sun ◽  
Ziyang Qiu ◽  
Jianfei He ◽  
Yuxing Yuan ◽  
...  
2020 ◽  
Vol 12 (21) ◽  
pp. 9223 ◽  
Author(s):  
Andrea Garzulino

The awareness that a historic building is a complex system made up of interdependent parts and endowed with a specific energetic behavior is now widespread. Therefore, the energy improvement of a historic building does not only consist of designing individual construction elements or high-performance materials. On the contrary, it is based on the ability to analyze the buildings and recognize and enhance the specific thermal characteristics of each individual situation. Over the past two decades, the publication of European directives aimed at improving the energy efficiency of existing buildings has led each country to promulgate national guidelines in order to help operators planning and implementing energy improvement actions for historic buildings. The guidelines of the Italian Ministry of Cultural Heritage prescribe a method to evaluate the effectiveness of different energy improvement interventions in historic buildings through a qualitative-quantitative analysis based on static energy simulation. However, the ministerial guidelines do not prescribe any method for the analytical evaluation of other key issues aimed at the success of any energy improvement action for the historic building. Based on the literary and standard review on EEHB 2000–2020, this paper presents a multi-criteria comparative analysis method of energy improvement techniques for historic buildings in order to support operators in choosing the most suitable action for each case study. The method analyses each energy improvement technique according to four parameters: energy efficiency (increase in expected efficiency), compatibility (ability to ensure the protection of the morphological, material, and architectural features of the historic building), durability, and cost effectiveness. The method is based on descriptive and analytic forms for the different parts of the historic building and for the different improvement actions. These have been experimentally verified on a masonry case study, representative of widespread built heritage. The result opens the possibility of implementing the national guidelines and increasing their effectiveness.


2017 ◽  
Vol 24 (7) ◽  
pp. 697-704 ◽  
Author(s):  
Yuan-dong Pei ◽  
Sheng-li Wu ◽  
Shao-guo Chen ◽  
Zhi-xing Zhao ◽  
Gang An ◽  
...  

2013 ◽  
Vol 2 (3) ◽  
pp. 259
Author(s):  
Sinan YILMAZ ◽  
Hür Mahmut Yücer ◽  
Yahya Fidan

Abstract There are many studies focusing on Karabuk province, which is one of the most important iron-steel manufacturing centers in Turkey, and the developing iron-steel sector in this province. This iron-steel sector and Karabuk as a whole have undergone many transformations due to the following factors: the privatization of the national iron-steel factory, Kardemir; the foundation of Karabuk University; and the implementation of training programs for steelworkers and an Iron and Steel Institute for students by Karabuk University. These factors suggest that the changes in Karabuk province are ongoing ones that will have a rapid and favorable effect on the society. To follow this change, it is necessary to have periodic studies of the iron-steel sector in Karabuk. This study empirically examines on such variables as socio-economic status, job satisfaction, and sector visions of the steelworkers.


2020 ◽  
pp. 607-612
Author(s):  
Bernard Coûteaux

This paper elaborates on the key solutions offered by De Smet Engineers & Contractors (DSEC) to optimize the efficiency of cane sugar producing and processing facilities. In order to meet customer needs, DSEC offers proprietary predictive models built using the latest versions of specialized software. These models allow factory managers to envision the whole picture of increased operational and capital efficiency before it becomes reality. An integrated energy model and the CAPEX/OPEX evaluation method are discussed as ways to estimate and optimize costs, both for new greenfield projects and revamping of existing factories. The models demonstrate that factory capacities can be successfully increased using equipment that is already available. Special attention is paid to crystallization and centrifugation process simulations and the potential improvement of the global energy balance. One case study shows the transformation of a beet sugar factory into a refinery to process raw cane sugar after beet crop season and the second case shows the integration of a refinery into a cane sugar factory. The primary focus of the article is optimization of the technological process through predictive modelling. DSEC’s suggested solutions, which lead to great improvements in a plant’s efficiency and its ability to obtain very low energy consumption, are discussed.


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