Dissertation/ Thesis
Investigating the feasibility of ammonia as a decarbonised energy vector for marine applications
| العنوان: | Investigating the feasibility of ammonia as a decarbonised energy vector for marine applications |
|---|---|
| المؤلفون: | Ambalakatte, Ajith |
| سنة النشر: | 2023 |
| المجموعة: | The University of Nottingham: Nottingham ePrints |
| الوصف: | The thesis details work conducted to analyse the feasibility of ammonia as a decarbonised energy vector for applications in the marine sector. Ammonia is now gathering significant interest due to being a zero carbon energy vector potentially produced from water, air and renewable energy. To understand the viability of ammonia, a review of competing energy vectors such as hydrogen and methanol was conducted with the relative strengths and weakness assessed. The key challenges with ammonia were deemed to be with its safety and could be overcome by proper education and control of fuel handling. Following this, extensive reviews were carried out on the various production, storage and energy conversion technologies that enable the use of ammonia as energy vector. The review of the application of ammonia in internal combustion engines revealed a lack of prior scientific work related to the use of high energy combustion systems (plasma/radical initiated) in Internal combustion (IC) engines for improving combustion of ammonia. Pre-chamber Jet ignition (JI) is one such solution where a small amount of fuel is combusted in a pre-chamber producing a jet of reactive products that are distributed in the main-chamber and initiate the combustion at multiple sites in the main-chamber. The distributed ignition of JI enables it to achieve fast burn rates with shorter flame travel and short burn duration. Since ammonia suffers low laminar flame speed, there was a synergy to use JI to overcome this challenge. As a result, this became the primary focus of this work, particularly in the backdrop of several marine engine manufacturers recently proposing the use of ammonia in large MW scale engines without sufficient evidence of feasibility in the public domain. To evaluate the viability of JI as potential combustion system for ammonia powered IC engines, a single cylinder gasoline direct injection engine was upgraded to incorporate a port fuel ammonia injection system. With the engine capable of operating in spark ignition (SI), ... |
| نوع الوثيقة: | thesis |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://eprints.nottingham.ac.uk/76010/1/Thesis_Final.pdf; Ambalakatte, Ajith (2023) Investigating the feasibility of ammonia as a decarbonised energy vector for marine applications. PhD thesis, University of Nottingham. |
| الاتاحة: | http://eprints.nottingham.ac.uk/76010/ https://eprints.nottingham.ac.uk/76010/1/Thesis_Final.pdf |
| Rights: | cc_by |
| رقم الانضمام: | edsbas.1E95A561 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |