碩士 / 國立成功大學 / 交通管理科學系碩士在職專班 / 104 / Nowadays over 90% of global trade relies on maritime transport which indicates its importance in terms of overall global economics and trade issues. When the international merchant shipping procedure highly depends on a tug, the fuel consumption of tug goes up by17% in offshore shipping, which is the third largest energy consumption. A Tug which uses Heavy Fuel Oils(HFOs) subsequently causes a lot of environmental pollution, such as NOX , SOX and so on. The contribution of the shipping emission to the global pollution can be identified as follows: nitrogen oxides(NOX ),15%、sulfur oxides(SOX ), 13%.The Tug operation has frequently been causing huge pollution Therefore the aim of this research is to study Liquefied natural gas (LNG) which has become the best choice for international shipping as an alternative fuel.
The aim of this research is to analyze TIPC marine corporations Ltd, whose tugs assist international merchant in and out of the harbor. And also explores the environmental influences of using LNG as an alternative fuel instead of traditional fuels which are based on EPA and SPB models. The result shows that by comparing LNG alternative to traditional fuels, the emission will reduce by 84-87% of NOX emission、99% of SOX emission、20-29% of CO2 emission and 85-87% of CO emission. In both examples the results show LNG has obviously benefited the environment. In order to ensure that the safety of ships coming in and out of the harbor, and achieve the principle of minimizing emission caused by the tugs, this research in the scenario analysis optimize mode estimates of the emission pollution and make recommendation of tug deployment. The results also show that TIPM should deploy the 10,000- ton ship with a 4,200ps tug, the 20,000-ton ship with a 2,400ps tug and a 3,200ps tug, the 30,000ton ship with two 3,200ps tugs, the 40,000-50,000- ton ship with a 3,200ps tug and a 4,200ps tug, the 60,000- ton ships with a 4,000ps tug and two 4,200ps tugs, the 100,000 ton ship with two 3,200ps tugs and two 4,200ps tugs. When LNG is alternative to traditional fuels, it will not only reduce the pollution to the least, but also reduce about 5.23% to 5.86% of CO2e emission.
| Identifer | oai:union.ndltd.org:TW/104NCKU5119125 |
| Date | January 2016 |
| Creators | Chia-YiHuang, 黃佳怡 |
| Contributors | Ching-Chih Chang, 張瀞之 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 55 |
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