共查询到20条相似文献,搜索用时 31 毫秒
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研究了温度为22 ℃、日开启时长13 h和温度为24 ℃、日开启时长24 h的空调控温模式下高温高湿储粮区稻谷储藏过程粮堆温度变化情况,比较了控温储藏前后稻谷水分和脂肪酸值的变化情况,分析了不同深度粮堆水平方向上各层温度变化差异,评估了利用空调控温实现准低温储粮的技术可行性。结果表明,在不同空调运行模式下,粮堆平均温度和最高粮温均缓慢升高。空调控温储粮对粮堆表层温度影响较大,对中层粮温影响较小,在空调控温储藏期间下层粮温可能受地坪温度影响。降低控温温度但缩短其控温时长的控温模式更加经济高效,采取22 ℃+13 h的控温模式比24 ℃+24 h的控温模式能够节约12.4%左右的用电费用。同时,控温空调对基础粮温较低的粮堆在仓温、表层粮温以及平均粮温的控制效果上较为明显,粮堆基础粮温对控温储粮技术的实施具有重要作用。 相似文献
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低温储粮一直是我国粮食储藏工作的重点研究内容,根据相变储能材料在储粮温控系统能量转化规律,通过实仓试验研究,表明采用相变储能材料与空调制冷组合式准低温稻谷储藏技术,对减少储粮期间稻谷水分损失、保持稻谷品质、抑制稻谷陈化等方面具有一定成效。 相似文献
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通过对辽宁省铁岭地区仓储企业绿色控温储粮技术现状的调研和总结,提出了本地区空调控温储粮技术应用前提条件、空调的选择与安装以及操作管理等经验做法,对推进本地区绿色控温储粮技术运用、降低储粮成本和保证粮食储备安全提供了借鉴。 相似文献
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旨在为仓储物流行业及油脂加工厂中仓库设计提供借鉴,以库容量10万箱中小包装食用油(5 L小包装、10 L中包装成品油各5万箱)仓库为研究案例,系统分析了两种仓库(平面仓库和自动化立体库)的主要特点,从占地面积、生产成本、建设投资、运营费用等方面对两种仓库的技术方案进行了比较,并对两种仓库进行了经济分析。结果表明:自动化立体库相较于平面仓库能减少66.4%的占地面积,每年能够节约运营成本近50万元;自动化立体库的增量投资收益率为19.01%,增量投资回收期为5.26年,费用现值相比平面仓库低114万元。针对多品种、多拣选、年吞吐量大、产品可追溯性高、衔接工厂MES/ERP系统且持续运营在6年以上的仓库,使用自动化立体库能够显著降低项目总持有成本,降低工人劳动强度,提高发货效率,改进客户体验。 相似文献
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为了更准确地把握出版行业图书等产品的发行销售和客户的购买趋势及出版行业产品供应市场的变化趋势,对在出版行业建立业务管理及辅助决策系统进行了研究.利用Microsoft提供的OLAP Services工具,根据相应的事实表和维表构建了基于MOLAP存储方式的立方体-图书销售分析数据模型,构建了基于多维数据模型的数据仓库.由原型系统研究表明,多维数据模型的数据仓库有利于出版行业市场变化分析,为企业的经营管理和决策起到重要作用. 相似文献
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Richard T Arbogast Paul E KendraRichard W Mankin Richard C McDonald 《Journal of Stored Products Research》2002,38(4):349-363
The insect populations of a botanicals warehouse in north-central Florida were studied to gain a better understanding of insect problems associated with stored botanicals and to identify measures that could be taken to mitigate the problems. The warehouse contained either dried saw palmetto berries, Serenoa repens (Bartram) Small, or dried passion-flower (maypop) vines, Passiflora incarnata (L.), depending on the season. Insect populations were monitored intermittently for one year using arrays of moth and beetle traps. Capture rate, relative abundance, and spatial distribution of different species were examined over time. The six most abundant species in order of abundance were: Cadra cautella (Walker), Lasioderma serricorne (F.), Oryzaephilus mercator (Fauvel), Typhaea stercorea (L.), Plodia interpunctella (Hübner), and Tribolium castaneum (Herbst). All of these appear capable of infesting saw palmetto, but the major pests were C. cautella and L. serricorne. Oryzaephilus mercator and P. interpunctella were also important, but T. castaneum and T. stercorea were minor. Passion-flower was a less suitable host than saw palmetto for all of the species except T. stercorea. Nevertheless, all of the six species infesting saw palmetto except O. mercator were captured in numbers sufficient to indicate that they were also capable of infesting passion-flower. Lasioderma serricorne was the major pest. Spatial analysis of trap captures revealed that the insect distributions changed as different botanicals were brought in, removed, or redistributed in the storage area. Potential measures to mitigate insect problems in stored botanicals are discussed, including spatial targeting of insect control and sanitation efforts. 相似文献
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