| Summary: | 碩士 === 國立高雄海洋科技大學 === 輪機工程研究所 === 104 === According to statistics, the Greenhouse gases (GHG) produce by boats from manufacturing to operation and other relevant activities generate about 3.3% of global GHG emissions. Therefore, it is about the new ear for low-carbon and energy conservation green shipping. There are about 180 boats are under the jurisdiction of Taiwan’s Coast Guard Administration and the total fuel consumption reaches about 18,000 tons annually. Green shipping is considered as a must-do matter, whether we, as global citizens, try to control ships deceleration for reducing carbon emissions or simply to save fuel expenses. The 100 tons, 50 tons and 20 tons boats of the Taiwan’s Coast Guard Administration are investigated in this study. The actual navigating speed, fuel consumption and gross tonnages of the boats mentioned above are measured and analyzed. In addition, per unit of carbon emissions from GHG of mobile sources are calculated by using the recommended equation of World Business Council for Sustainable Development (WBCSD). Furthermore, the Energy Efficiency Design Index (EEDI) of individual boat is measured based on the MARPOL Annex VI.
Exclusion of weather, wind and ocean currents and other factors, this study discovers that the average of hourly carbon emission is significantly reduced by nearly 26%-38% when the main engine of 100 tons and 50 tons boats move dead slow than with max speed; the fuel consumption is 370% higher than the average. However, the average hourly carbon emission is reduced by 450% when the main engine of 20 tons boats move dead slow than with max speed and the fuel consumption is 1520% higher than the average.
After simulate shipping route, all the boats move with 20% speed down without considering the factor of time, this study shows that the carbon emissions produce by both 100 tons and 50 tons boats barely decrease but slightly higher. The fuel consumption of 100 tons boats reduce 23% than the average, however, the 50 tons ones increase 3% than the average. The carbon emissions produce by 20 tons boats reduce 28% and fuel consumption also reduces 35%.
According to statistics obtained in this study, it meets the goals of both economic and carbon reduction navigation when the main machine of each boat moves with mid speed.
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