| | SLO | ENG | Cookies and privacy

Bigger font | Smaller font

Show document Help

Title:SINTEZA FLEKSIBILNIH TOPLOTNO INTEGRIRANIH CELOTNIH OBMOČIJ PROCESOV
Authors:ID Zirngast, Klavdija (Author)
ID Kravanja, Zdravko (Mentor) More about this mentor... New window
ID Čuček, Lidija (Comentor)
Files:.pdf MAG_Zirngast_Klavdija_2015.pdf (5,78 MB)
MD5: 0A7831FA5332C0CA0F457915E66DE513
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V magistrskem delu smo analizirali in s supertrukturnim pristopom poiskali predloge za rekonstrukcijo omrežij toplotnih prenosnikov za posamezne obrate in več obratov oz. celotna območja ob upoštevanju spremenljivih obratovalnih pogojev. Za posamezne obrate in celotna območja smo z namenom znižanja porabe energije ob upoštevanju nedoločenih obratovalnih pogojev temperature, pretokov in sestav vhodnih surovin najprej s programom TransGen ugotavljali potencial za zmanjšanje energije. Nato smo s postopkom matematičnega programiranja s programom TransGen predlagali modifikacije za zmanjšano porabo energije v posameznih obratih in celotnih območjih. Z uporabo multiperiodnega modela smo za dane scenarije za modifikacije pridobili fleksibilne rešitve. Z metodo Monte Carlo smo za podatke ob spremenljivih obratovalnih pogojih procesov in celotnih območij procesov pridobili pričakovane in nominalne vrednosti spremenljivk in njihove frekvenčne in kumulativne porazdelitve. Na štirih primerih smo analizirali potencial zmanjšanja porabe pogonskih sredstev v odvisnosti od števila modifikacij in izračunali ekonomsko upravičenost. V vseh primerih smo ugotovili precejšen potencial za zmanjšanje energije: v prvem primeru 21 %, v drugem 17,4 %, v tretjem 75,9 % in v četrtem primeru 72,4 %. Poraba pogonskih sredstev se skoraj linearno zmanjšuje v odvisnosti od števila modifikacij, dobiček pa se s številom modifikacij povečuje. Doba vračanja je v vseh primerih manjša od enega leta: v prvem primeru znaša 2,4 mesece, v drugem 3 mesece, v tretjem 3,6 mesecev in v četrtem 7,8 mesecev.
Keywords:: matematično programiranje, TransGen, toplotna integracija, integracija celotnega območja, fleksibilnost, rekonstrukcija obratov
Place of publishing:Maribor
Publisher:[K. Zirngast]
Year of publishing:2015
PID:20.500.12556/DKUM-55282 New window
UDC:66.012.3:519.85(043.2)
COBISS.SI-ID:19450134 New window
NUK URN:URN:SI:UM:DK:VIVGHGLC
Publication date in DKUM:19.11.2015
Views:1850
Downloads:170
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
Copy citation
  
Average score:(0 votes)
Your score:Voting is allowed only for logged in users.
Share:Bookmark and Share



Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Secondary language

Language:English
Title:SYNTHESIS OF FLEXIBLE HEAT INTEGRATED TOTAL SITES
Abstract:The aim of this Masters Dissertation is to analyse and identify possible modifications for retrofitting heat exchanger networks for both individual process plants and Total Sites, by considering flexible operating conditions using a super-structural approach. We first identified potentials for the reduction of energy consumption by considering uncertain operating conditions, such as temperatures, flow-rates, and compositions of raw materials. We then suggested retrofitting modifications for obtaining this reduction of energy consumption within individual process plants and Total Sites, by using mathematical programming approach and software tool TransGen. For different operating scenarios, modelled as multi-period formulation, we obtained flexible solutions regarding modifications. By using the Monte Carlo method, we obtained the expected and nominal values of the variables, their frequencies and cumulative distributions under the flexible operating conditions of individual process plants and Total Sites. We analysed the potential for utilities’ consumption reduction depending on the number of modifications regarding the four case studies, and for all the cases we calculated the economic viabilities. In all the cases we obtained considerable potential for energy consumption reductions - in the first case it was 21 %, in the second case 17.4 %, 75.9 % in the third case, and 72.4 % in the fourth case. The results indicated that with the number of modifications the consumptions of the utilities decreased and profit increased almost linearly. The payback periods in all the cases were less than a year - 2.4, 3.0, 3.6 and 7.8 months, respectively.
Keywords:mathematical programming, TransGen, heat integration, Total Site integration, flexibility, retrofit


Comments

Leave comment

You must log in to leave a comment.

Comments (0)
0 - 0 / 0
 
There are no comments!

Back
Logos of partners University of Maribor University of Ljubljana University of Primorska University of Nova Gorica