The Study on the Designation of a Better Vertical Boom

• Main Authors: Lu,Tung-Yi, 盧同益
• Other Authors: Kuo, Chiou-Tsuen
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/41174548809682333173

碩士 === 國立高雄海洋科技大學 === 漁業生產與管理研究所 === 97 === Abstract The main purpose of this investigation is to test how the difference in weight will affect the relationship in standing for better vertical boom, also a test of performance for all kinds of boom in preventing polluted oil, at the same time compare the performance with traditional boom. This vertical boom design is based on Drift gill net and tuna fishing theory (the use of floater body and weight combined to make the float stand), this enables the boom to float on water and also prop up the horizontal surface to form a flat surface on water, a sinker was used to adjust the underwater and above water height. Experiment results are as follows: 1. When the sinker is 120g the whole system of boom can stand perpendicular which is 90 degrees towards the water surface. 2. 120g of weight applied to the vertical boom is found to be unstable, also consider the water level under the boom and other important factors, the optimum weight is found to be 140g, and therefore 140g is used for further progressive performance testing. 3. When the weight remains unchanged, with faster flow rate it is, the more oscillating the water level it is. 4. In constant speed of water flow, with the different wave height, the performance of blocking different types of polluted oil is not affected much. In other hand if the wave height stays constant but the speed varies, this causes bigger affection. 5. With constant flow rate, when the flow rate is 650rpm, there is obvious difference in the performance of blocking polluted oil in different boom. When the flow rate is over 750rpm, wave height is within 0cm to 20cm, the Styrofoam particles escaped are between 2 to 11 in traditional boom. Whereas in vertical boom with the same conditions, the Styrofoam particles escaped are between 1 to 5. This shows a much better result compare to traditional boom. 6. When performing EVA test for traditional boom in the same conditions, the escaped Styrofoam particles are between 2 to 7. whereas for vertical boom the escaped particles are between 1 to 2. This shows vertical boom has better polluted oil blocking ability than traditional boom.