Method for the Synthesis of Optimum Multistage Heat Exchange Network

2018 ◽  
Vol 52 (6) ◽  
pp. 943-955 ◽  
Author(s):  
N. N. Ziyatdinov ◽  
I. I. Emel’yanov ◽  
Le Quang Tuen
2020 ◽  
Vol 56 (1-2) ◽  
pp. 54-59
Author(s):  
O. Yakovleva ◽  
O. Ostapenko ◽  
V. Trandafilov

Energy efficiency projects deployment for Ukraine is one of the challenging task today. Ukrainian in­dustry faces very complex environment for project development as well as its deployment within organization nowadays. UA Policy struggle to keep place on the European market to have possibility not only be a part of global policy but to go forward and to bring benefits for macro and micro economy. Fresh breath by integration energy systems within project management into business model of organization let to move closer to hold under control energy efficiency projects realization and avoid financial risks. Environmental policy and energy policy play crucial role for Ukrainian transformation into European pla­yer. Presented proactive plan provides possibilities to deliver the intended economic and environmental benefits of the Ukrainian energy labelling and ecological design directives. These directives are in use or are under development process by increasing the rates of compliance with their energy efficiency requirements. To start from the energy efficiency development process investigation in order to have possibilities to make corrections on the stage of modeling and design can bring benefits and reduce costs for end users. To evaluate the efficiency of heat exchangers, there are over 40 different private integral energy efficiency criteria. Such a number makes the estimation of heat exchangers not always objective and sufficiently definite, which does not allow to algorithmize the task of determining the efficiency of heat exchangers. On the foundation of the system element representation for the heat exchange network, the concepts of energy potential and energy efficiency of energy exchange are proposed. The obtained equations allow us to determine the efficiency of energy exchange not only for an element of the heat exchange network, but also for a complex system as a whole with a minimum of information about the system


AIChE Journal ◽  
2018 ◽  
Vol 65 (2) ◽  
pp. 549-561 ◽  
Author(s):  
Haoshui Yu ◽  
Chao Fu ◽  
Matias Vikse ◽  
Chang He ◽  
Truls Gundersen

Energy ◽  
2019 ◽  
Vol 182 ◽  
pp. 932-953 ◽  
Author(s):  
Leandro V. Pavão ◽  
Caliane B.B. Costa ◽  
Mauro A.S.S. Ravagnani

2013 ◽  
Vol 860-863 ◽  
pp. 766-769
Author(s):  
Bin Wang ◽  
Kang Bi Luo ◽  
Yu Jia ◽  
Hu Ping Li

This paper takes the conversion system of sulphuric acid plant made with the sulphur as research object, utilizes Aspen Energy Analyzer software and pinch technology to improve and optimize for the current heat exchange network of conversion system. The heat exchange network optimized by Aspen software is under the premise of reaching the requirement of heat exchange, its heat transfer area, utilities and operating cost reaches the minimum, achieving energy saving, and it provides a new approach for the optimal design of heat exchange network.


AIChE Journal ◽  
2018 ◽  
Vol 64 (7) ◽  
pp. 2472-2485 ◽  
Author(s):  
Sajitha K. Nair ◽  
Harsha Nagesh Rao ◽  
Iftekhar A. Karimi

2021 ◽  
Vol 5 (3) ◽  
pp. 1-8
Author(s):  
Guangjun Mei

Hydrogenation technology has many advantages in light and clean oil products, and has become the most reasonable and effective key technology in the refining industry. However, the hydrogenation reaction process is high temperature, high pressure and hydrogen operation, which consumes a lot of fuel and power, and the energy consumption of the unit is high. Through pinch analysis, the violators of pinch points are identified, and the heat exchange process of the existing hydrogenation unit is optimized and adjusted. Reasonably distribute the heat exchange load of mixed hydrogen oil and low-content oil, improve the final heat exchange temperature of mixed hydrogen oil, reduce the heating load and fuel consumption of heating furnace, strengthen the recovery of inefficient low-temperature potential heat, advance to the design of maximum energy recovery (MER), realize the optimization of cold utility and hot utility, and effectively reduce the energy consumption of hydrogenation unit after optimization. The optimization of heat exchange network of hydrogenation unit significantly improves economic and social benefits.


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