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A Technology About Energy Conservation and Emissions Reduction for Ships Based on Cathode Potential Control Theory

Author: HuangXueJiao
Tutor: Liu
School: Dalian Maritime University
Course: Environmental Science and Engineering
Keywords: Pollution form ships Energy saving Cathode potential Magnetization technology
CLC: U661.7
Type: Master's thesis
Year: 2012
Downloads: 107
Quote: 1
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Abstract


With the deterioration of global air pollution, the air quality is going from bad to worse. This situation is apt to cause a variety of natural disasters. The adverse effects of air pollution have started to threaten human life and survival. Every country has gradually strengthened the awareness of protect the world’s atmosphere. Sea transportation shoulders more than 80 percent of transport task in the whole world, its huge exhaust emissions lead increasingly global atmospheric pollution, so ship emissions control is imperative. Meanwhile, energy resources is scarce gradually, and the fuel costs rapidly increase. Reducing energy consumption, especially the consumption of petroleum products becomes a global technical research focus. Therefore, the research about technology of marine energy conservation and emission reduction has important significance to the global sustainable development.Today, applied research about the magnetization technology is gradually mature, a variety of magnetization antifouling products and magnetization energy-saving products have been brought forth. Researchers are constantly improving the magnetization conditions to adapt to different applications, aiming at the unadjustable about permanent magnetic field, a professor of Tohoku University, Japanfirst discovered the cathode potential control technology of low-voltage alternating current field, and successfully applied to the antifouling of the drainage pipe and energy-saving and emission reduction about different cars.This paper tests the effects of the cathode potential controller used for marine engines, to search the optimal experimental conditions of the engine of the ship. The test is divided into indoor bench test and the ship test:1. The test-bed measurement simulates the engine working, by the change of the fuel consumption, the change of energy and the change of exhaust gas before and after the use of controller, to try to grasp the energy saving and emission reduction effect of the cathode potential controller, and exploring the best operating conditions;2. In the ship test, the exhaust emissions testing is very difficult to carry out, so only the fuel flow and power were recorded to analyse the energy saving effect of the controller by comparing.The test-bed measurement results show that the controller can reduce the content of polluting gas from diesel engines emissions, but the reduce of fuel consumption and fuel consumption rate is not so obvious. Based on the results, a preliminary estimate can be done that the optimum frequency of the cathode potential controller is 6K～8KHz.The ship test results showed that the use of the controller reduced fuel consumption and made the average output power more stable, indicating that the controller can also achieve energy-saving effect when installed on the ship engine.

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CLC: > Transportation > Waterway transport > Marine Engineering > Ship Principle > Ship performance test equipment
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