Essays about: "fuel Cells"
Showing result 6 - 10 of 123 essays containing the words fuel Cells.
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6. Hydrogen fuel in the domestic maritime transport sector of Fiji : A Feasibility Study
University essay from KTH/Skolan för industriell teknik och management (ITM)Abstract : The maritime transport sector accounts for around 2.9% of the world’s anthropogenic emissions, a percentage that is growing yearly. Alternative fuels have come to be considered the necessary solution of the future, not least in island nations such as Fiji that are socially and economically dependent on sustainable maritime transport. READ MORE
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7. Reprocessing and Characterization of Polybenzimidazole for High-Temperature Polymer Electrolyte Membrane Fuel Cells
University essay from Lunds universitet/Centrum för analys och syntesAbstract : A reprocessing method of poly(2,2’-(m-phenylene)-5,5’-bibenzimidazole) (PBI) membranes recovered from the production line of High-Temperature Polymer Electrolyte Membrane Fuel Cells (HT-PEMFC) at Blue World Technologies (BWT) has been developed in order to reduce material loss in the production. Redissolution of scrap PBI membranes in poly(phosphoric acid) (PPA) and phosphoric acid (PA) was successful and the subsequent washing procedure produced PBI that could be redissolved in N,N-dimethyl acetamide (DMAc) and suitable for solution casting of new membranes. READ MORE
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8. The effect of material properties on PEM fuel cell catalysts on durable oxidation reduction activity
University essay from KTH/KemiteknikAbstract : I detta examensarbete utforskas påverkan av partikelstorleken hos Pt-katalysatorer på kolbärare på syrereduktionen i polymerelektrolytmembran (PEM)-bränsleceller. Den elektrokemiskt aktiva ytarean, aktiviteten för syrereduktion och tillhörande degraderingshastigheter för de undersökta katalysatorerna beräknas och jämförs. READ MORE
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9. Analysis of a high step-up gain DC-DC converter for fuel cell and battery application
University essay from Uppsala universitet/Institutionen för elektroteknikAbstract : In sustainable energy systems those using fuel cells, high step-up gain converters are widely used to increase the output voltage to levels that can be used by other converters, such as inverters for grid connection or powering other AC loads. In order to obtain a higher voltage gain, in comparison to a traditional boost converter, often different topologies techniques are involved. READ MORE
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10. Numerical modeling of airflow on the cathode-side of a bipolar flow plate : How the formed geometry affects the pressure drop and flow distribution in a hydrogen fuel cell
University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Abstract : Climate change and rising temperatures is a well-known problem. To tackle global warming a transition from fossil fuels to renewable and reliable energy sources is necessary. Hydrogen, in fuel cells, is proposed to replace diesel and gasoline in the transport sector. READ MORE