Retrofit of Heat Exchanger Networks for Multiperiod Operations by Matching Heat Transfer Areas in Reverse Order

2014 ◽  
Vol 53 (12) ◽  
pp. 4792-4804 ◽  
Author(s):  
Lixia Kang ◽  
Yongzhong Liu
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Reverse Order ◽  
Heat Exchanger Networks

Heat Transfer Blocks Diagram: A Novel Tool for Targeting and Design of Heat Exchanger Networks Inside Heat Integrated Water Allocation Networks

2018 ◽  
Vol 6 (2) ◽  
pp. 2704-2715 ◽  
Author(s):  
Xiaodong Hong ◽  
Zuwei Liao ◽  
Jingyuan Sun ◽  
Binbo Jiang ◽  
Jingdai Wang ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Water Allocation ◽  
Heat Exchanger Networks

Exergy Study of Fouling Factors in Heat Exchanger Networks

2009 ◽  
Vol 132 (1) ◽  
Author(s):  
Zunlong Jin ◽  
Qiwu Dong ◽  
Minshan Liu
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Objective Function ◽  
Capital Cost ◽  
Numerical Results ◽  
Heat Transfer Area ◽  
Heat Exchanger Networks ◽  
Exergy Consumption ◽  
Exergoeconomic Analysis ◽  
Selection Of

Selection of fouling factors is somewhat arbitrary in heat exchanger networks (HENs) synthesis. Fouling factors were reconsidered in this article for heat exchanger networks design. An objective function based on exergoeconomic analysis was introduced to assess optimal less conservative fouling factors. The objective took account of exergy consumption expense and heat exchanger capital cost at the same time. The exergy consumption of heat transfer in HENs was calculated using subsection integral on balanced composite curves. The proposed method was applied to an industrial case. Numerical results indicated that the optimal less conservative fouling factors were 80% of the original values and the heat transfer area of the system saved 350 m2 compared with root design. So it is necessary to reconsider the values of fouling factors for HENs design and that exergoeconomic analysis is useful in determining the optimal less conservative fouling factors.

Synthesis of Large-Scale Heat Exchanger Network Based on Sub-Networks

2011 ◽  
Vol 236-238 ◽  
pp. 633-636
Author(s):  
Xin Guan ◽  
Zhi Bo Guo ◽  
Wen Jing Tu
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Large Scale ◽  
New Method ◽  
Heat Exchanger Network ◽  
Heat Exchanger Networks ◽  
Minlp Problem

The optimization of heat exchanger networks (HEN) is a typical MINLP problem. For large-scale HEN, it is difficult to solve this problem globally. After optimization, the large-scale HEN is divided into several independent sub-networks automatically. The sub-network is defined as a part of the HEN in which the streams have no heat transfer with the streams outside the sub-network. If a HEN can be divided into two or more sub-networks, then, these sub-networks are independent from each other. Based on optimization of sub-networks, a new method which can solve large-scale HEN problem efficiently is proposed.

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