Št. zadetkov: 15
Magistrsko delo
Oznake:
motorji z notranjim zgorevanjem;prisilni vžig;sintezni plin;zemeljski plin;termodinamska analiza procesa zgorevanja;analiza izpustov onesnažil;samovžig;ciklične variacije;medvaljne variacije;
V magistrski nalogi je predstavljena zasnova merilne proge ter ključne predelave, ki so potrebne za ustrezno krmiljenje ter termodinamsko in emisijsko analizo delovanja 4-valjnega motorja z notranjim zgorevanjem in prisilnim vžigom ob uporabi sinteznega plina. Na podlagi izvedenih meritev, v točkah ...
Leto:
2017
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
gorivne celice s trdnim oksidom;elektrokemični model;rešitev v zaprti obliki;elektrokemična kooksidacija;ogljikov monoksid;vodik;solid oxide fuel cell;electrochemical model;reduced dimensionality model;closed-form solution;electrochemical co-oxidation;carbon monoxide;hydrogen;
Achieving efficient solid oxide fuel cell operation and simultaneous prevention of degradation effects calls for the development of precise on-line monitoring and control tools based on predictive, computationally fast models. The originality of the proposed modelling approach originates from the hy ...
Leto:
2022
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
aglomeracija;katalitična plast;degradacija;gorivne celice;visokotemperaturne;modeliranje;Ostwaldovo zorenje;podprti katalizator;agglomeration;catalyst layer;degradation;fuel cells;high temperature;modeling;Ostwald ripening;supported catalyst;
The degradation of the catalyst layer represents one of the main limiting factors in a wider adoption of fuel cells. The identification of the contributions of different mechanisms of catalyst degradation, namely the Ostwald ripening and particle agglomeration, is an important step in the developmen ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)
Objavljeni znanstveni prispevek na konferenci
Oznake:
fuel cells;proton exchange membrane;modelling;electrochemical impedance spectroscopy;parametrisation in time and frequency domain;diagnostic and control applications;
Successful parametrization and re-parametrization of the models used in PEMFC observer applications is instrumental to assure ideal control of the system. To increase ease of parametrisation and accuracy of parameter determination, this paper presents framework of twin analytical ansatzes for modell ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)
Doktorska disertacija
Oznake:
proton exchange membrane;fuel cells;thermodynamical models;liquid water modeling;optimal design;degradation;
This doctoral thesis focuses on modeling and predicting fuel cell performance and degradation. Firstly, a reduced dimensionality model is developed, improving predictability in low current density regions and allowing for efficient determination of fuel cell intrinsic parameters, which can with deve ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
Objavljeni znanstveni prispevek na konferenci
Oznake:
gorivne celice;protonska izmenjevalna membrana;visoko temperaturna PEM gorivna celica;modeliranje;napovedovanje;degradacija platine;fuel cells;high temperature;proton exchange membrane;modelling;predictive;platinum degradation;
High temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) are a promising and emerging technology that allow for highly efficient low emission small scale electricity and heat generation. Simultaneous reduction of production costs and prolongation of the service life is considered as a si ...
Leto:
2019
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
fuel cells;proton-exchange membrane;high temperature;modeling;platinum degradation;
High temperature proton exchange membrane fuel cells (HT-PEMFCs) are a promising and emerging technology, which enable highly efficient, low-emission, small-scale electricity and heat generation. The simultaneous reduction in production costs and prolongation of service life are considered as major ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
fuel cells;PEMFC;modelling;educational approach;scale-bridging;
The use of hydrogen fuel cells as a mobile source of electricity could prove key to the future decarbonisation of heavy-duty road and marine transportation. Due to the complex interplay of various physicochemical processes in fuel cells, further development of these devices will depend on concerted ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
fuel cells;electrochemical impedance spectroscopy;analytical solution;parametrisation;realtime capable;modelling;
Electrochemical impedance spectroscopy (EIS) is a very powerful tool for the diagnosis and characterisation of fuell cells (FC). However, there is still a lack of physico-chemically consistent models that include parameters with a clear physical meaning and can be related to intrinsic parameters of ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
synthesis gas;spark ignition engines;thermodynamic combustion analysis;knock detection;cycle-to-cycle variations;operational stability;
The paper focuses on the implementation of a comprehensive and robust optimization procedure for a synthesis gas fired four-cylinder, spark ignited, 2.2 L industrial engine used in combined heat and power applications. Innovatively designed workflow is for the first time incorporating also a thoroug ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)