prikaz prve stranice dokumenta Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity
  Download
PDF 3.31 MB
master's thesis
Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. urn:nbn:hr:149:687784
Plazanić, Marko
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

Cite this document

Plazanić, M. (2017). Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:687784

Plazanić, Marko. "Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:687784

Plazanić, Marko. "Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2017. https://urn.nsk.hr/urn:nbn:hr:149:687784

Plazanić, M. (2017). 'Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 29 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:687784

Plazanić M. Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2017 [cited 2024 November 29] Available at: https://urn.nsk.hr/urn:nbn:hr:149:687784

M. Plazanić, "Feasibility of double electrochemical flow cell for high current density conversion of heat to electricity", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:149:687784

Metadata
TitleFeasibility of double electrochemical flow cell for high current density conversion of heat to electricity
Title (croatian)Izvodljivost dvostruko-protočne elektrokemijske ćelije za pretvorbu topline u električnu energiju kod visokih gustoća struje
AuthorMarko Plazanić
MentorZoran Mandić (mentor)
Committee memberZoran Mandić (predsjednik povjerenstva)
Committee memberMarko Rogošić (član povjerenstva)
Committee memberDomagoj Vrsaljko (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2017-09-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Analysis, Synthesis and Management of Chemical Processes
Abstract
Feasibility of a double electrochemical flow cell for conversion of heat to electricity has been examined, i.e. the research question was if this system could be used as a heat engine. Redox species have temperature dependent redox potentials, and this dependence is different for different redox species. In theory if one has two different electrochemical cells at two different temperatures, with same redox species on the positive and the negative side, there should be a difference in potentials between two cells from which one could extract current and thus power that can be used for work. In this sense, two cell electrochemical heat engine has been constructed. In order to assess which redox pairs would be the most suitable for the heat engine, temperature dependent redox potentials, i.e. Seebeck coefficients, of different redox pairs were measured by cyclic voltammetry (CV). Basic measurements regarding batteries thermodynamics and its kinetics were conducted. Various sets of temperature differences (ΔT) and states-of-charge (SOC) values on the characteristics of two cell electrochemical heat engine were examined with battery tester. Measurements at open circuit voltages (OCVs) were conducted and polarisation curves were determined. Current densities of 2 mA/cm^2 were achieved through conversion of heat to electricity and the measurements indicate electrochemical heat engine is feasible, however, it is necessary to further optimize the setup and the measurement procedure.
Abstract (croatian)
Ispitana je izvedivost dvostrukog elektrokemijskog protočnog članka za pretvorbu toplinske u električnu energiju, odnosno da li se mogu upotrijebiti kao toplinski motor. U ovom radu se pokušava iskoristiti svojstvo redoks tvari gdje se potencijal neke redoks aktivne tvari mijenja drukčije s temperaturom. U teoriji, ako dva članka s istim redoks parovima rade na različitim temperaturama, zbog toga što im potencijal različito ovisi o temperaturi, generira se razlika potencijala iz koje se može izvući struja i prema tome snaga koje se može pretvoriti u rad. U tom smislu, konstruiran je toplinski motor s dvostruko-protočnim elektrokemijskim člancima. Kako bi se procijenili najprikladniji redoks parovi za toplinski motor, temperaturni koeficijenti, odnosno Seebeck koeficijenti, različitih redoks parova su određivani metodom cikličke voltametrije (CV). Provedena su osnovna mjerenja kako bi se odredile termodinamičke i kinetičke karakteristike ispitivanih protočnih članaka, tj. toplinskog motora Ispitan je utjecaj različitih vrijednosti razlika temperatura (ΔT) i stupnja napunjenosti (states-of-charge (SOC)) na karakteristike pretvornika s dvostruko-protočnim elektrokemijskim ćelijama. Provedena su mjerenja na potencijalu otvorenog kruga (OCV) te su određivane polarizacijske krivulje. Ostvarene su gustoće struje od 2 mA/cm^2 kroz pretvorbu toplinske u električnu energiju, te mjerenja ukazuju da je koncept izvediv uz prethodnu optimizaciju članaka i bolje razumijevanje parametara koji utječu na razliku potencijala.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:149:687784
Study programmeTitle: Chemical Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-04-28 09:51:03