Application of exergy analysis for improving energy efficiency of natural gas liquids recovery processes

Title
Application of exergy analysis for improving energy efficiency of natural gas liquids recovery processes
Authors
김진국
Keywords
Energy efficiency; Natural gas liquids; Exergy analysis; Simulation; Optimization
Issue Date
2015-01
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
APPLIED THERMAL ENGINEERING, v. 75, NO Special SI, Page. 967-977
Abstract
Thermodynamic analysis and optimization method is applied to provide design guidelines for improving energy efficiency and cost-effectiveness of natural gas liquids recovery processes. Exergy analysis is adopted in this study as a thermodynamic tool to evaluate the loss of exergy associated with irreversibility in natural gas liquids recovery processes, with which conceptual understanding on inefficient design feature or equipment can be obtained. Natural gas liquids processes are modeled and simulated within UniSim (R) simulator, with which detailed thermodynamic information are obtained for calculating exergy loss. The optimization framework is developed by minimizing overall exergy loss, as an objective function, subject to product specifications and engineering constraints. The optimization is carried out within MATLAB (R) with the aid of a stochastic solver based on genetic algorithms. The process simulator is linked and interacted with the optimization solver, in which optimal operating conditions can be determined. A case study is presented to illustrate the benefit of using exergy analysis for the design and optimization of natural gas liquids processes and to demonstrate the applicability of design method proposed in this paper. (C) 2014 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/20.500.11754/21165http://www.sciencedirect.com/science/article/pii/S1359431114009132
ISSN
1359-4311
DOI
http://dx.doi.org/10.1016/j.applthermaleng.2014.10.042
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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