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Title

Heat Exchangers in A C۳MR LNG Plant, Cooling Curves and Their Effects on Efficiency

Year: 1389
COI: JR_ADMTL-3-3_001
Language: EnglishView: 48
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Abstract:

In this paper, we are going to improve the energy efficiency of an industrial C۳MR base load LNG plant by changing its refrigerant components and its mole fractions in liquefaction and subcooling cycles based on the cooling curves generated in the main liquefaction and subcooling heat exchangers. Later on, selection features of the elements will be discussed. First, non-optimized C۳MR plant models and the obtained cooling curves reveals. The process is modeled by using the Hysys® software. The PRSV equation of state is used for thermodynamics properties calculations both for the natural gas and the refrigerants. Two methods for modeling and optimization are explained and the results are compared. The first optimization method is done by a try and error method, which uses temperature vs. enthalpy diagrams or thermodynamics second law (Exergy loss). This method is based on decreasing the temperature difference between hot and cold streams. In the second method, optimizer of Hysys® is used. In this method, a random mole fraction suggests by optimizer at each step and the plant’s consumption work calculates. By comparing the obtained consumption’works and choosing the least one, the relative mole fractions determines as the optimized refrigerants. The convergence of results of method ۱ and ۲ (The mole fractions of liquefaction and subcooling refrigerants) proves the accuracy of these methods and the models and primary predictions. The results show that by optimization of mixed refrigerants, it is possible to decrease the energy demand about ۱۰.۴ MW (۵.۳۶ %).

Paper COI Code

This Paper COI Code is JR_ADMTL-3-3_001. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1192217/

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If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Safari, Hamid and Fasihbeygi, Masoud,1389,Heat Exchangers in A C۳MR LNG Plant, Cooling Curves and Their Effects on Efficiency,https://civilica.com/doc/1192217

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COI stands for "CIVILICA Object Identifier". COI is the unique code assigned to articles of Iranian conferences and journals when indexing on the CIVILICA citation database.

The COI is the national code of documents indexed in CIVILICA and is a unique and permanent code. it can always be cited and tracked and assumed as registration confirmation ID.

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