Searched for: subject%3A%22ammonia%22
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Olsthoorn, Joost (author)
Ammonia is a precursor in fertilizer production and a potential carbon-free energy carrier, which is essential for the energy transition to more renewable energy sources. To that end, the current fossil fuel based method of industrial ammonia production through the Haber-Bosch process should be replaced by electrochemical ammonia synthesis....
master thesis 2024
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Schenkel, Frank (author)
To achieve the emission goals set out by the International Maritime Organization in 2018. Low or zerocarbon fuels will have to be used. Ammonia is considered to be a possible candidate since it doesn’t contain carbon. This thesis will attempt to study two methods that characterize the closed-cylinder process of an internal combustion engine; the...
master thesis 2023
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Eulderink, Nicole (author)
Low-carbon hydrogen is expected to have a large role in future energy systems. Recent research shows the short-term financial feasibility of blue hydrogen is often higher than green hydrogen. Ammonia production is particularly carbon-intensive due to its hydrogen production routes. This research focuses on the physics-based modelling of blue...
master thesis 2023
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Jacobs, Isabelle (author)
This graduation thesis studies the CI combustion of ammonia and hydrogen in an ICE. It contains a review of the literature and a modeling study of the ignition and cylinder performance of the AmmoniaDrive test engine. AmmoniaDrive is a NWO-funded research project that aims to decarbonize shipping by introducing an ammonia-fuelled SOFC-ICE power...
master thesis 2023
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Vlierboom, Alexander (author)
Ammonia (NH3) is a bulk commodity chemical known for its large production volumes and application in the global fertiliser industry, and is more recently being explored for its role as a sustainable energy vector. The industry standard ammonia production method is the century-old Haber-Bosch (HB) process, which is power by fossil fuels, and is...
master thesis 2023
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Mink van der Molen, Eise (author)
As the world is shifting towards a more sustainable economy, regulation could be implemented to reduce emission from the chemical shipping industry. Confronted by regulation, it is important for shipowners to be able to select the most promising measure or alternative fuel for their specific operations and vessel to comply with such regulation....
master thesis 2021
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Boxma, Timo (author)
As the shipping industry needs to become greener, it has to move away from fossil fuels. For deep-sea shipping, ammonia is marked as a high potential fuel. The AmmoniaDrive concept feeds the anode-off gas from a Solid Oxide Fuel Cell (SOFC) and additional ammonia into an Internal Combustion Engine (ICE). The exhaust gas coming from the ICE can...
master thesis 2021
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Lambregts, Taco (author)
The reduction of the of harmful emissions that result fromyachting are an increasing concern and priority. It has been widely established that yachts have a significant contribution to the emission of greenhouse gasses and other emissions that are harmful to the environment and the public health. Measures must be taken that drastically reduce...
master thesis 2021
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van Laar, Ghislaine (author)
This research examines the possible pathways and available technologies that will help the shipping sector to achieve the climate goals set by the IMO. Reaching these goals will require financial incentives and policies regarding sustainability. These policies need to describe regulations at both international and regional level given the...
master thesis 2021
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Hagen, Gilles (author)
The International Maritime Organisation (IMO) has set the goal to reduce the total annual greenhouse gas emissions from international shipping by at least 50% by 2050 compared to 2008. For this reason, shipowners will have to innovate the drive-trains and energy systems of their vessels to reduce harmfull emissions. To achieve this goal,...
master thesis 2021
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van Duijn, Joël (author)
The goal of this thesis is to characterise diesel-ammonia combustion using a mean value first principle approach, and to implement this characterisation of diesel-ammonia combustion in a time domain two-stroke engine model. This model will be used to indicate the technical feasibility of diesel-ammonia as a marine fuel. The main research...
master thesis 2021
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Boom, Senja (author)
The energy transition is advancing rapidly, and the Dutch electricity grid is changing with it. Increasing shares of variable renewable energy sources create mismatches between electricity supply and demand. These mismatches create a need for large-scale energy storage. Existing large-scale energy storage technologies are pumped hydro energy...
master thesis 2020
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Peshave, Kalyani (author)
Excessive consumption of non - renewable resources in the recent times has negative effects on the environment, one of the important of which include global warming. This suggests an urgent need for adaption to the sustainable use of the resources, for which the thermal technologies show a lot of scope. Absorption heat pump is a type of heat...
master thesis 2019
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Liang, Cheng (author)
The global energy transition from a fossil fuel base energy system to a renewable energy source base system is the key mission for a low-carbon future. The target of CO<sub>2 </sub>emission reduction by 2050, following the Paris Climate Agreement, is 90% compared to the CO<sub>2</sub> level of 1990. Haber-Bosch process is the main industrial...
master thesis 2019
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Leichsenring, Maaike (author)
Ocean Thermal Energy Conversion (OTEC) uses the temperature difference between the surface and deep layers to generate electricity. The temperatures in the ocean hardly vary between day and night or between the seasons, which ensures a very constant energy production with OTEC. In order for OTEC to compete with the current forms of energy...
master thesis 2019
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Guđmundsdóttir, Kristin (author)
The main objective of this study was to develop a quick model for an oil free twin screw compressor. The computational time of the model was to be kept as low as possible so that the model could be used for quick estimations and optimizations of the process. This was done by using a simple geometry focusing on the volume curve and port sizes,...
master thesis 2018
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Deckers, Rob (author)
Ammonia in aqueous environments leads to eutrophication and toxicity of the receiving water body (Metcalf &amp; Eddy, 2003). In order to prevent environmental pollution, ammonia needs to be removed from residual water streams, before the water can be discharged to the aqueous environment (Song et al., 2012). Waste water treatment plants (WWTPs)...
master thesis 2017
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Martens, Evelien (author)
The influence of feed temperature and total ammonia nitrogen concentration on permeate quantity and quality in a vacuum membrane distillation process has been researched in order to determine the suitability of membrane distillation in an energy producing system including a solid oxide fuel cell.
master thesis 2017
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Schouten, Bob (author)
Absorption refrigeration cycles are energy saving as they can be driven by waste heat instead of electricity. By doing so, they reduce the use of fossil fuels, resulting in a reduction of emissions. However, many challenges exist for the traditional working fluids of the cycle, such as the crystallization problem of the water-lithium bromide...
master thesis 2017
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Rijpkema, J.J. (author)
In this study two mathematical models are developed to evaluate the performance of ammonia/water absorption and desorption in a minichannel. The models evaluate pressure drop, heat transfer and mass transfer inside the minichannel, including the effect of surface tension and flow patterns.
master thesis 2012
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