Temperature driving force (TDF) curves for heat exchanger network retrofit – A case study and implications

Energy ◽  
2017 ◽  
Vol 123 ◽  
pp. 283-295 ◽  
Author(s):  
Dina A. Kamel ◽  
Mamdouh A. Gadalla ◽  
Omar Y. Abdelaziz ◽  
Mennat A. Labib ◽  
Fatma H. Ashour
Keyword(s):  
Heat Exchanger ◽  
Driving Force ◽  
Heat Exchanger Network

An Optimization Method of Heat Exchanger Network for Non-Fixed Investment Costs

2012 ◽  
Vol 516-517 ◽  
pp. 135-139
Author(s):  
Xiang Bai Hu ◽  
Guo Min Cui ◽  
Hai Zhu Xu ◽  
Jin Yang Wang
Keyword(s):  
Heat Exchanger ◽  
Local Minimum ◽  
Optimization Method ◽  
Industrial Applications ◽  
Optimization Process ◽  
Fixed Investment ◽  
Heat Exchanger Network ◽  
Innovative Method ◽  
Minimum Solution

In order to overcome the difficulty of easily falling into the local minimum solution during the optimization process of heat exchanger network which is not considered fixed investment costs, an innovative method was presented. The total areas of local minimum solution were distributed equally, and then the distributed areas were assigned to initial areas for further optimization. The better local minimum solution was sought out after jumping out of local minimum solution. Through some case study, it presents that this optimization method is able to obtain better optimization results which is more suitable to industrial applications.

Heat Exchanger Network Optimization by Differential Evolution Method

2014 ◽  
Vol 564 ◽  
pp. 292-297 ◽  
Author(s):  
Ngo Thi Phuong Thuy ◽  
Rajashekhar Pendyala ◽  
Nejat Rahmanian ◽  
Narahari Marneni
Keyword(s):  
Heat Exchanger ◽  
Differential Evolution ◽  
Network Optimization ◽  
Energy Utilization ◽  
Heat Exchanger Network ◽  
De Algorithm ◽  
Global Cost ◽  
Pinch Technology ◽  
Recent Developments

The synthesis of heat exchanger network (HEN) is a comprehensive approach to optimize energy utilization in process industry. Recent developments in HEN synthesis (HENS) present several heuristic methods, such as Simulated Annealing (SA), Genetic Algorithm (GA), and Differential Evolution (DE). In this work, DE method for synthesis and optimization of HEN has been presented. Using DE combined with the concept of super-targeting, the optimization is determined. Then DE algorithm is employed to optimize the global cost function including the constraints, such as heat balance, the temperatures of process streams. A case study has been optimized using DE, generated structure of HEN and compared with networks obtained by other methods such as pinch technology or mathematical programming. Through the result, the proposed method has been illustrated that DE is able to apply in HEN optimization, with 16.7% increase in capital cost and 56.4%, 18.9% decrease in energy, global costs respectively.

scholarly journals Analysis Heat Exchanger Network Steam Power Plant in Using Pinch (Case Study in PT POMI Unit 3 Power Plant Paiton)

2020 ◽  
Vol 38 (2) ◽  
pp. 439-446
Author(s):  
Bayu Rudiyanto ◽  
Titah Raga ◽  
Totok Prasetyo ◽  
Dedi Rahmanto ◽  
Mochammad Nuruddin ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Power Plant ◽  
Heat Exchanger Network ◽  
Steam Power ◽  
Steam Power Plant

scholarly journals An Extended Grid Diagram for Heat Exchanger Network Retrofit Considering Heat Exchanger Types

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2656 ◽  
Author(s):  
Bohong Wang ◽  
Jiří Jaromír Klemeš ◽  
Petar Sabev Varbanov ◽  
Min Zeng
Keyword(s):  
Heat Exchanger ◽  
Heat Exchangers ◽  
Energy Savings ◽  
Heat Exchanger Network ◽  
Type Selection ◽  
Temperature Ranges ◽  
Double Pipe ◽  
Utility Cost ◽  
Retrofit Design

Heat exchanger network (HEN) retrofit is a vital task in the process design to improve energy savings. Various types of heat exchangers such as shell and tube, double-pipe, compact plate, and spiral tube have their working temperature ranges and costs. Selecting suitable types of heat exchangers according to their temperature ranges and costs is a crucial aspect of industrial implementation. However, considering the type of heat exchangers in the HEN retrofit process is rarely seen in previous publications. This issue can be solved by the proposed Shifted Retrofit Thermodynamic Grid Diagram with the Shifted Temperature Range of Heat Exchangers (SRTGD-STR). The temperature ranges of six widely used heat exchanger types are coupled in the grid diagram. This diagram enables the visualisation of identifying the potential retrofit plan of HEN with heat-exchanger type selection. The retrofit design aims to minimise utility cost and capital cost. An illustrative example and a case study are presented to show the effectiveness of the method.

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