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Detta examensarbete undersöker den tekno-ekonomiska genomförbarheten av att integrera vätgaslagringssystem med havsbaserade vindkraftsparker på den svenska energimarknaden. När Sverige övergår till ett mer förnybart energisystem skapar variationen i vindkraftsproduktion utmaningar för nätstabilitet och elmarknaden. Vätgaslagring erbjuder en potentiell lösning genom att omvandla överskottsenergi fr
Code stability is a matter of concern for three-dimensional (3D) fuel cell models operating both at high current density and at high cell voltage. An idealized mathematical model of a fuel cell should converge for all potentiostatic or galvanostatic boundary conditions ranging from open circuit to closed circuit. Many fail to do so, due to (i) fuel or oxygen starvation causing divergence as local
Changes in the energy landscape relating both to the ambitions of a green energy transformation as well as increasing global security concerns, have led to increased attention to new energy carriers. These can serve the role of allowing for the electrification of transport and decarbonization of industries as well as to reduce the effects of variation in many sustainable energy sources such as winChanges in the energy landscape relating both to the ambitions of a green energy transformation as well as increasing global security concerns, have led to increased attention to new energy carriers. These can serve the role of allowing for the electrification of transport and decarbonization of industries as well as to reduce the effects of variation in many sustainable energy sources such as win
Stora förändringar och varierad elproduktion har lett till många osäkerheter i elsystemets marknader. Balanseringsverktygen har därmed hamnat i rampljuset med stor inkomstpotential idag och möjligen även långt framöver. Denna rapport visar att det finns stora möjligheter för vätgassystem och batterier att medverka på dessa marknader. En förväntad fördubbling av elproduktion under de kommande 20 år
Power-to-X (PtX) is an emerging approach in decarbonizing industries hard to electrify, and is in many cases requiring stable hydrogen supply to maximize production. Hydrogen is produced via electrolysis and requires large amounts of electricity, which can be expensive, especially when considering highly fluctuating electricity prices. One solution in reducing electricity related costs is to integ
Hydrogen use increase and so does the knowledge about its risks, but not necessarily about how to handle these risks. Limited literature is available about risk mitigation for hydrogen use, the objective of this thesis is to increase this knowledge. Risk reduction measures that could be relevant for hydrogen leakage were reviewed and their potential for further assessment was qualitatively consid
The UN Sustainable Development Goals provide inspiration for current and future funding proposals. Many opportunities exist to address affordable and clean energy (Goal 7). But, universities must balance academic freedom and the urgency required to achieve these goals, while being critical, entering politicised arenas, and remaining a legitimate institution. “The workshop offers a deepened discuss
Vätgas har potential i ett energilagringssystem eftersom det är en energibärare som är väldigt energirik och kan lagras i stor skala. Vätgas kan produceras enkelt via elektrolys av vatten och lagras i stora mängd under högt tryck, vid behov kan vätgasen sedan brännas i en kraftverksprocess och generera elektricitet. Då förbränning av vätgas med syrgas enbart bildar vattenånga kan ett förnybart ene
The climate is changing, something that many scientists correlate to increased emissions of greenhouse gases. The effluent that is considered to have the highest impact on global warming is carbon dioxide, when effect and quantity are taken into account. Most projections however, show that the effect is reversible if the amount of carbon dioxide emissions discharged to the atmosphere is decreased.
Med ökad andel intermittent elproduktion i Sveriges elproduktionsmix och ett åldrande stamnät ökar behovet av flexibilitet i elsystemet. Lagring av energi, till exempel i vätgas, är ett exempel på en sådan flexibilitetslösning, eftersom energin kan flyttas från tidpunkter med överskott till tidpunkter med högt energibehov. Syftet med examensarbetet är att undersöka energisystemnyttan med ett v äga
In the context of a decarbonized future where stringent carbon dioxide (CO2) emissions constraints are imposed on vehicles, hydrogen emerges as a promising solution to address emissions directly at the point of use. This chapter explores the potential of using hydrogen to power vehicles, particularly in the context of heavy-duty (HD) internal combustion engine (ICE) applications. Hydrogen vehicles
