{"title":"Exergo-economic optimization of heat-integrated water networks","authors":"","doi":"10.1016/j.tsep.2024.102883","DOIUrl":null,"url":null,"abstract":"<div><p>This paper introduces an exergo-economic optimization approach for synthesizing heat-integrated water networks (HIWNs). Most previous research focused on economic optimization, aiming for optimal network design with minimum total annualized cost (TAC). Exergetic optimization of HIWNs has rarely been studied in the literature. Thus, a novel approach is introduced by developing a nonlinear programming (NLP) model to minimize exergy destruction within the system. In order to manage network complexity (stream splits and extensive piping), exergy destruction caused by friction is added to the objective function. The NLP model produces good local solutions comparable to those obtained with the mixed integer nonlinear programming (MINLP) model with an economic objective function (TAC), with a relative discrepancy in TAC of about 0.4 % and solution time for the NLP model being only about one third of the time needed by the MINLP model. In addition, the exergy-based model does not depend on costs for freshwater, utilities, and equipment. The proposed methodology provides a set of local solutions from which the best one can be selected based on users’ criteria, such as minimum TAC, minimum exergy destruction or a solution in between.</p></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":null,"pages":null},"PeriodicalIF":5.1000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2451904924005018/pdfft?md5=3516fa9014f16f17e720fefce9c23dd7&pid=1-s2.0-S2451904924005018-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science and Engineering Progress","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451904924005018","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
This paper introduces an exergo-economic optimization approach for synthesizing heat-integrated water networks (HIWNs). Most previous research focused on economic optimization, aiming for optimal network design with minimum total annualized cost (TAC). Exergetic optimization of HIWNs has rarely been studied in the literature. Thus, a novel approach is introduced by developing a nonlinear programming (NLP) model to minimize exergy destruction within the system. In order to manage network complexity (stream splits and extensive piping), exergy destruction caused by friction is added to the objective function. The NLP model produces good local solutions comparable to those obtained with the mixed integer nonlinear programming (MINLP) model with an economic objective function (TAC), with a relative discrepancy in TAC of about 0.4 % and solution time for the NLP model being only about one third of the time needed by the MINLP model. In addition, the exergy-based model does not depend on costs for freshwater, utilities, and equipment. The proposed methodology provides a set of local solutions from which the best one can be selected based on users’ criteria, such as minimum TAC, minimum exergy destruction or a solution in between.
期刊介绍：
Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
