Assessing Energy Saving and Atmospheric Emission Reduction Opportunities in Marine Shipping Sector: an Empirical Result from Container Liners
For an industry where fuel accounts for at least 30% of its operating costs, cutting fuel consumption would achieve a major cost reduction. At the same time, this would reduce the marine shipping industry’s impact on the environment through reduced emission of SOx, NOx, CO2 and other fuel-related pollutants. Energy conservation and efficiency, or carried even further, utilization of clean renewable energy to replace fossil fuels, is now the most important challenge in the energy application by the industry. Various energy efficiency improvement measures have been suggested by the industry experts, for both new builds and existing vessels. These measures may require significant capital commitment. On the other hand, a well-managed energy system has the potential to save energy requirement of a ship by at least 10%. It is therefore very important to determine, in light of economic cost and benefits, which one, or which combination, of management and technology alternatives is most promising and shall be applied first. This study is a systematic three-year study to assess alternatives of reducing fuel consumption onboard merchant ships, with an analysis of the effects of such changes on the ship owner’s costs. Starting from current energy practice on board typical merchant ships, the assessment will be carried on to alternative energy technology as well. As the first-stage result, this report documents an investigation of how operating practices affect fuel consumption on board merchant vessels. Actual data obtained from the abstract logs of ten trans-ocean container liners covering three years are used to develop a multivariate model to estimate the elasticity of various factors related to operating practice on the fuel consumption. An assessment is then carried out on possible fuel consumption reduction and cost savings that may result from changes in operating practices. The result confirms, based on actual voyaging data, fuel saving potentials from ship speed reduction and weather routing, two strategies most often suggested by the ship specialists. The study postulates also possible energy efficiency enhancement via shortening planned maintenance intervals of major energy consumers on board, especially of items such as main engine pistons and turbo chargers. However, this preliminary result fails to provide an empirical support to the postulation.
marine shipping energy consumption energy efficiency atmospheric emissions container liners
HUA Jian WU Yihsuan
Department of Marine Engineering,National Taiwan Ocean University,Keelung,Taiwan,China freelance researcher,Taiwan,China
国际会议
2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)
上海
英文
2357-2361
2009-06-02（万方平台首次上网日期，不代表论文的发表时间）