Ghaderi Mohammad, Naderloo Leila, Javadikia Hossein, Mostafaei Mostafa, Rabbani Hekmat
Department of Mechanical Biosystems Engineering, Faculty of Agriculture, College of Agriculture and Natural Science, Razi University, 6715685438, Kermanshah, 67571 Iran.
J Environ Health Sci Eng. 2019 Jul 10;17(2):743-752. doi: 10.1007/s40201-019-00390-x. eCollection 2019 Dec.
Given the significance of the relationships between human beings, environment, machines and ergonomics as well as the necessity of using renewable fuels, the present study aimed to investigate the effects of different blends of biodiesel, bioethanol and diesel on noise pollution emitted by a MF285 tractor in stationary and moving modes by the aid of statistical methods. In this respect, the emitted noise was measured using the noise dosimeters and sound level meters in the driver and the bystander's positions, at 1000, 1600 and 2000 RPM in both stationary and moving modes. Then, nine fuel blends of biodiesel, bioethanol and diesel with different volumetric percentages as well as pure diesel were studied. To study the effects of key factors on noise pollution, the factorial experiment was conducted in the form of a completely randomized design, followed by the application of the SPSS Statistics Software Version 19.0. The fuel type nearly affected the noise pollution at the level of 5%, and other factors such as engine rotational speed and the fuel type-engine rotational speed interaction influenced it at the level of 1%. In both the driver and bystander's positions, the minimum and maximum noise pollution occurred at 1000 and 2000 RPM, respectively. The effects of gears along with their twofold and threefold interaction with other factors were not significant. Finally, the results of the present study demonstrated that the BED fuel, composed of 25% biodiesel and 4% bioethanol, had the lowest noise pollution.
鉴于人类、环境、机器与人体工程学之间关系的重要性以及使用可再生燃料的必要性，本研究旨在借助统计方法，调查不同比例混合的生物柴油、生物乙醇和柴油对MF285拖拉机在静止和移动模式下所排放噪音污染的影响。在这方面，使用噪音剂量计和声级计，在静止和移动模式下，于驾驶员和旁观者位置，分别在1000、1600和2000转每分钟的转速下测量排放的噪音。然后，研究了九种不同体积百分比的生物柴油、生物乙醇和柴油混合燃料以及纯柴油。为研究关键因素对噪音污染的影响，以完全随机设计的形式进行析因实验，随后应用SPSS Statistics软件19.0版本。燃料类型对噪音污染的影响接近5%的水平，而其他因素如发动机转速以及燃料类型与发动机转速的相互作用对其影响为1%的水平。在驾驶员和旁观者位置，最低和最高噪音污染分别出现在1000和2000转每分钟时。档位及其与其他因素的二次和三次相互作用的影响不显著。最后，本研究结果表明，由25%生物柴油和4%生物乙醇组成的BED燃料噪音污染最低。
