A Study on Ventilation of Metallic Fume and Thermal Stress of Radiation Heat for Improvement of Working Environment in a Shipyard
| Project/Area Number |
16360439
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
FUKUCHI Nobuyoshi Kyushu University, Faculty of Engineering, Professor, 大学院・工学研究院, 教授 (80039677)
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| Co-Investigator(Kenkyū-buntansha) |
SHINODA Takeshi Kyushu University, Faculty of Engineering, Associate Professor, 大学院・工学研究院, 助教授 (80235548)
HU Changhong Kyushu University, Research Institute for Applied Mechanics, 応用力学研究所, 助教授 (20274532)
李 旗 名村造船所, 船舶海洋事業部, 技術研究員
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| Project Period (FY) |
2004 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥9,600,000 (Direct Cost: ¥9,600,000)
Fiscal Year 2005: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 2004: ¥5,400,000 (Direct Cost: ¥5,400,000)
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| Keywords | Shipyard / Working environment / Metallic fume / Fume concentration / Ventilation system / Body heat balance / Metabolic heat / Skylight |
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| Research Abstract |
1.For the purpose of improving the working environment in a fabrication shop, the measurements of distributional concentration and particle size of metallic fume at N/C cutting line and sub-assembly line in two shipyards were carried out. Moreover, the turbulent diffusion state of fume corresponding to measurement conditions was numerically analyzed by using k-ε model based on SIMPLE algorithm. The relation between the ventilation system and the fume transportation state on the working site was investigated evidently using experimental data and calculated data, for establishing the ventilation system with efficient control of fume flow.
In collaboration with the measurements of distributional concentration of welding fume during manufacture of cubic block, the turbulent diffusing aspect of fume was numerically analyzed in the condition of various ventilation systems and the way of low fume generation. Then, the effect of the measures for decreasing fume concentration on the working site
… More
in cubic block was investigated evidently on the base of calculated results.
2.The thermal environment at an exposed working place in a hot season with skylight should keep within the thermal limitation of human body, considering the metabolic heat and radiation heat. Then, the relation between the heat storage of body during work and the environmental factors has to be clarified reliably corresponding to the magnitude of working load.
In order to grasp this relation, the formula of heat storage of human body considering the effect of sunshine was established, and the experiment in the exercise using an ergo-meter was carried out with measuring the temperature of body skin under sunshine environment. The working conditions on the upper deck of a building ship were measured to investigate the actual situation of working environment.
Moreover, the thermal criterion of working environment was defined by merging thermal environment factors, in order to judge the allowable threshold of work and to settle on the thermal-control measures. And the contour line of thermal storage was proposed for the estimate of effects on heat-measures of every sort. Less
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Report
(3 results)
Research Products
(13 results)
