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- Ahlgren, Fredrik, 1980-, et al.
(författare)
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Energy integration of organic rankine cycle, exhaust gas recirculation and scrubber
- 2018
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Ingår i: Trends and challenges in maritime energy management. - Cham, Switzerland : Springer. - 9783319745756 - 9783319745763 ; , s. 157-168
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Bokkapitel (refereegranskat)abstract
- The vast majority of ships trafficking the oceans are fuelled by residual oil with high content of sulphur, which produces sulphur oxides (SOx) when combusted. Additionally, the high pressures and temperatures in modern diesel engines also produce nitrogen oxides (NOx). These emissions are both a hazard to health and the local environment, and regulations enforced by the International Maritime Organization (IMO) are driving the maritime sector towards the use of either distillate fuels containing less sulphur, or the use of exhaust gas cleaning devices.TwocommontechniquesforremovingSOx andlimitingNOx aretheopen loop wet scrubber and exhaust gas recirculation (EGR). A scrubber and EGR installation reduces the overall efficiency of the system as it needs significant pumping power, which means that the exhaust gases are cleaner but at the expense of higher CO2 emissions. In this paper we propose a method to integrate an exhaust gas cleaning device for both NOx and SOx with an organic Rankine cycle for waste heat recovery, thereby enhancing the system efficiency. We investigate three ORC configurations, integrated with the energy flows from both an existing state-of-the-art EGR system and an additional open loop wet scrubber.
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| 2. |
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| 3. |
- Viktorelius, Martin
(författare)
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The Human and Social Dimension of Energy Efficient Ship Operation
- 2018
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Ingår i: Trends and Challenges in Maritime Energy Management. - Cham : Springer. - 9783319745756 - 9783319745763 ; , s. 341-350
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- The human and social dimension of energy efficient ship operation has been recognized as crucial for the mitigation of emissions from ships. The success of future energy management in the maritime sector is, therefore, likely to depend on operators’, managers’ and policymakers’ understanding of how to address the human and social dimension. However, few studies have investigated the nature of the knowledge, skill and expertise required for efficient voyage execution. The paper is based on a qualitative case study identifying and analysing a number of themes related to the acquisition and development of the capability and competence relevant for energy efficient ship handling. The paper argues for the importance of acknowledging collective tacit knowledge and the socio-material context in which such knowledge is developed. It is argued that this perspective can contribute to widening the debate on policy and management of maritime energy efficiency.
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