Numerical Analysis of Aerodynamic Cooling Ducts for Fuel-cell Powered Aircraft

This thesis project undertakes a comprehensive numerical analysis of aerodynamic cooling ducts in the context of fuel-cell powered aircraft, aiming to enhance the efficiency and performance of these innovative propulsion systems. The use of fuel cells in aviation presents a paradigm shift towards sustainable and environmentally friendly air...

Modelling the dynamic behaviour of a PEM fuel cell system

The research objective of this thesis is to simulate the dynamic behaviour of a proton exchange membrane (PEM) fuel cell system. The model will encompass the fuel cell stack and some simplified balance of plant components. It will focus on simulating the reactions of the cell and the system with regards to changes in the requested load.

Aircraft Integration of Air-Based Thermal Management Systems for Propulsive Fuel Cell Systems

Hydrogen is seen as a potential energy carrier for the next generation of aircraft that will be more climate-friendly than the previous generation of kerosene-powered aircraft. Two types of hydrogen-based propulsion systems are currently foreseen for such aircraft: hydrogen combustion and hydrogen fuel cell. In addition to producing useful...

Employing Liquid Hydrogen for Fuel Cell Heat Recovery in Aircraft

This work describes the benefits of exploiting cold hydrogen in a 2 MW liquid hydrogen-electric powertrain. Hydrogen is stored in a liquid state in the aircraft at its boiling point of 20 K (at 1 bar). Fuel cells require an input temperature of at least zero degrees Celsius to operate. The heating process can either be done by drawing current...

Alternative fuel selection and operational performance assessment for a 7000 DWT general cargo vessel: Impact assessment of methanol as alternative fuel on the operational performance of the LABRAX sersies vessels

The current global fleet is still dependent on conventional fuels as energy source to transport goods to various places in the world. These conventional fuels, such as MGO or HFO, emit large amounts of greenhouse gasses and other pollutant emissions. Regulation concerning these emissions becomes stricter every day, therefore institutions and...

Sizing Optimization of a Hybrid Propulsion powertrain for a Crew Transfer Vessel incorporating uncertainties: towards a cost-effective, eco-friendly design

A major transition became necessary for the maritime industry to meet the IMO’s targets for mitigating the carbon footprint of the sector by at least 50% by 2050. One of the promising methods to lower the emissions is the ship's hybridization. An enormous increase in pilot and demonstration projects for that purpose is being observed. This...

Optimal Control And Energy Management For Hybrid Aircraft

Interest grows rapidly in electric and hybrid electric aircraft. To determine the optimal performance and energy management required with such novel powertrain configurations, a knowledge-based aircraft and powertrain performance model is developed. The model is then used to set up an optimal control problem, which is transcribed to a non-linear...

Influence of Current Ripple on Proton Exchange Membrane Fuel Cell Degradation

The ongoing transition towards sustainable energy has resulted in a large interest in alternative sources. Proton exchange membrane fuel cells (PEMFC) use hydrogen to produce energy without harmful emissions, and they can be used in a range of applications, from mobility to industrial power generation.<br/><br/>One hurdle that still stands...

Fuel cell Systems Applied in Expedition Cruise ships: A Comparative Impact Analysis

Global endeavors to reduce emissions in the shipping industry are accelerating the interest in fuel cell systems. This paper explores the application of different fuel cell types (LT-PEMFC, HT-PEMFC and SOFC) in combination with different fuels (LH2, LNG,MeOH and NH3) in expedition cruise ships. An impact model is developed for the first design...

Safe and effective application of ammonia as a marine fuel

To achieve significant reduction in greenhouse gas emissions in shipping and enable ship owners to phase out fossil fuels entirely, renewable fuels, such as ammonia, play a crucial role. Ammonia is considered a balanced solution in terms of volumetric energy density and renewable synthetic production cost compared to other renewable fuels....

Economic feasibility of a hydrogen-fuelled marine transportation system: Case study of a bulk carrier at CMB

The crises of global warming, air pollution, acid rain and the running out of oil make the investigation into alternative fuel technologies crucial. New technologies are being investigated on a global scale in an attempt to address these problems. This thesis investigates the use of hydrogen-diesel dual-fuel engines and fuel cells. The economic...

Powertrainontwerp voor een fuel cell raceauto

Formula Zero Delft is een raceteam dat sinds 2007 racevoertuigen met een fuel cell bouwt. In dat jaar nam de stichting deel aan de eerste competitie voor waterstof karts. In de twee jaar hierna heeft het team nog twee karts gebouwd waarna de overstap naar Formula Student auto's is gemaakt. Na twee jaar in de Formula Studentcompetitie gaat het...