搜索结果: 1-9 共查到“农业工程 consumption”相关记录9条 . 查询时间(0.093 秒)
Study of fuel consumption in three tillage methods
maximum tillage reduced tillage no-tillage
2014/11/28
Fuel consumption per hectare of tilled land for the conventional or maximum tillage, reduced tillage using a multi-task
machine, and no-tillage using a direct drill planter has been studied and comp...
轻小型移动喷灌机组低能耗遗传算法优化设计(Optimization of Light-small Movable Unit Sprinkler System Using Genetic Algorithms Based on Energy Consumption Indicators)
喷灌机组 能耗 遗传算法
2010/12/28
合理配置与优化设计喷灌机组有助于实现机组装置效率最大化,有效降低能量消耗。以能耗最小为目标,以水泵-管路运行工况、喷头最小工作压力和喷头压力极差率为约束条件,以喷头配置数量、管道直径和末端喷头压力为决策变量,建立轻小型移动喷灌机组优化数学模型,提出基于遗传算法的优化设计方法。在满足喷灌设计参数条件下,模型与算法能够优化喷头数量、管道直径,还能够对系统流量、压力、效率、单位能耗等工作参数进行计算与设...
食品双螺杆挤出机比能耗定量化研究(Quantitative Study on the Specific Energy Consumption of Food Twin-screw Extruder)
食品 双螺杆挤出机 比能耗
2010/12/28
采用有限元技术,对食品双螺杆挤出机中流体的速度场、压力场进行了仿真研究。通过后处理计算,得到了各种工况下的比能耗。采用可旋转的中心组合设计方法进行了试验,分析仿真与试验结果存在差异的原因,并对仿真计算结果进行了修正。以修正后的仿真计算结果和试验结果为基础,对所建立的BP神经网络进行训练,建立了食品双螺杆挤出机挤压系统模型,此模型可用于挤出机比能耗的定量预测。
玉米垄作免耕播种机油耗试验与分析(Fuel Consumption Test and Analysis for the Ridge-till and No-till Corn Planter)
垄作 保护性耕作 播种机
2009/11/3
保护性耕作技术在我国垄作地区难以推广的主要原因是缺乏在有根茬原垄上确保播种质量的免耕播种机。针对以苗带浅旋处理玉米根茬为机理的2BML-2型垄作免耕播种机,进行了田间油耗试验。试验结果表明:在开沟器、覆土装置、镇压装置等部件工作参数一定时,影响播种机油耗的主要因素中,根茬处理装置的旋耕入土深度影响最大,其次是旋耕幅宽,然后是机组前进速度;在适合范围内,机组前进速度越大,油耗越小;本播种机能有效减少...
三螺杆挤压机熔体输送段功耗特性的数值分析(Numerical Simulation of Power Consumption Characteristics in Conveying Element in Triple Screw Extruder)
三螺杆挤压机 熔体输送段 功耗
2009/8/11
利用CFD技术,采用三维流—热耦合模型对三螺杆挤压机流场、温度场、压力场和粘性生热分布进行了研究。在此基础上,考虑熔体粘性耗散生热和压力升高的影响,研究了螺杆转速、螺纹头数、压力差和挤出量等参数对三螺杆挤压机挤出功耗和比能产量的影响,并和常规双螺杆挤压机进行了对比分析。结果表明,随着螺杆转速、流道两端压力差和挤出量的增加,三螺杆挤压机的挤出功耗逐渐增加,而比能产量却逐渐减小。随着螺杆螺纹头数的增加...
通用刀片功率消耗影响因素分析与田间试验(Analysis of Influencing Factors on Power Consumption and Field Test of Universal Blade)
旋耕 碎茬 通用刀片 功率消耗 正交回归设计 田间试验
2010/2/26
通过小袋法测定了不同材料薄膜分别在2、8、14、20℃下的薄膜透气系数,分析了温度对薄膜透气系数和透气系数比的影响。试验得出:随着温度的升高果蔬包装薄膜的透气系数增大,薄膜材料LDPE的透气系数比显著上升,但薄膜材料PVC的透气系数比在试验温度范围内呈现不同的变化趋势。薄膜透气系数与绝对温度之间满足Arrhenius方程,透气系数的自然对数值与绝对温度的倒数值之间呈显著的线性关系。 The gas...
The effect of the tractor engine rated power on diesel fuel consumption during material transport
engine characteristics transport rated power fuel consumption performance
2014/2/27
The authors of this paper determined in a field measurement how the change of the tractor engine power in a tractor-trailer combination affects the diesel fuel consumption related to the unit of trans...
The development of the price parity in the foodstuffs production and consumption vertical
the price, price regulation parity coefficient price scissors food vertical
2014/3/29
The analysis of the development of prices in the foodstuffs vertical, it means the prices of inputs into the agriculture, agricultural products, food products and consumption prices of foodstuffs, on ...
Exploitational indicators, Diesel fuel consumption and work quality during disc tiller skimming
skimming disc tiller machines operations monitoring
2014/2/28
During the shallow soil tillage after winter wheat harvest the tractor JOHN DEERE 8200 with disc tiller DOWLANDS 4500 operation was monitored. For dependence of the set field speed within plots acreag...