Energy Saving of Coastal Fishing Vessels Making Use of Spreadsheet Software

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  • 表計算ソフトを利用した沿岸漁船の省エネルギー化
  • ヒョウ ケイサン ソフト オ リヨウ シタ エンガン ギョセン ノ ショウエネルギーカ

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Abstract

Two problems of the reduction of the fuel consumption using spreadsheet software are taken up for the energy saving of coast fishing vessels. The first problem is the optimization of the principal dimensions of a fishing vessel for every Froude number, using the nonlinear programming system of spreadsheet software, the estimation charts of the effective horsepower for small FRP boats and their regression equations. The optimized hull forms have the narrower beam and the deeper draft at low speed, but have the wider beam and the shallower draft at high speed. In the results of the optimized calculation, the effective horsepower reduced about 10%. The second problem is optimization of the round trip speed of a coastal fishing vessel. The product at the effective horsepower and the sailing time is made the index of the fuel consumption. The combination of the best round trip sailing speeds is obtained for sailing time. Pareto charts show the minimum fuel consumption for sailing time.

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