气调库及气调库设备

分析果蔬贮藏保鲜期的生理变化，介绍气调保鲜库设计施工验收中的技术要求，保鲜工艺和主要设备。     

冰蓄冷系统优化蓄冷策略的探讨

本文提出了优化蓄冷策略的理念,该策略与其它运行策略相比,其优势在于它将负荷特点、电价结构等多方面因素考虑了进去,通过该策略计算得出的设备容量可以满足设计日负荷的需要,同时可以使年相当投资费用为最小.并以具体负荷为基础,非常详细的分析了优化蓄冷策略所涉及的各种问题的计算,而且通过计算机程序描绘出各种关系图,以便于清楚的掌握各种量的变化关系.     

空调蓄冷及固体吸附蓄冷技术

介绍了目前空调工程中常用的蓄冷技术及其各自特点,分析了固体吸附蓄冷技术及其应用.     

冰浆在蓄冰槽中的贮存特性研究进展

冰浆贮存是工程应用中经常遇到的问题,冰浆在蓄冰槽中的贮存特性对于冰浆的高效利用有着重要影响。目前冰浆在蓄冰槽中贮存的主要问题是:冰堆积分布不均匀,蓄冰槽不能充分利用。这里对国内外在冰浆贮存方面的研究成果进行汇总,分别从特性、模型和实验研究三个方面进行总结,分析产生冰浆贮存不均匀的原因和影响因素,采用摄像法来分析冰浆贮存的特性。结果表明:溶液、添加剂、冰浆入口含冰率和流量,以及贮存时间等是影响冰浆贮存特性的主要因素。     

Storage multifunctional oscillographs

Conclusions The storage multifunctional oscillograph is a measuring instrument which provides preliminary processing of the investigated signals. This processing consists of determining the separate parameters of the signal, representing it in the required form, and matching the parameters with the potentialities of the processing devices. The oscillograph is free from design redundancy inherent in sets of instruments which accumulate simple measurement.It is advisable to use a storage tube with a visible image and internal readout of electrical signals, as an oscillograph store. Operations in the multifunctional oscillograph should be based on the development method. It is of interest to develop quantitative methods for evaluating aggregates of simple measurements, optimum application of operations with respect to frequency, as well as the cost and reliability of the device.Translated from Izmeritel'naya Tekhnika, No. 1, pp. 46–48, January, 1968.     

Intra-year Water Storage

A reservoir receives monthly river flows and releases water according to a monthly rule. The reservoir content fluctuations constitute a bivariate seasonal Markov process which is approximated by a Markov chain. For the approximate bivariate Markov chain the seasonal limiting distributions are derived.

The distribution of the number of occurrences of emptiness during the critical month in N years of reservoir operation is also examined. This distribution is conditional on the month and state of the reservoir content when the reservoir is assumed to start operating. A simple numerical example illustrates the theory.     

包装材料及贮藏温度对板栗贮藏性能的影响

目的 探究5种包装材料在2种不同贮藏温度下对板栗品质的影响。方法 选用PE1膜、PE2膜、抗菌袋、PE/PA1膜、PE/PA2膜分别对板栗进行包装，然后置于常温(25 ℃)、低温(0 ℃)下贮藏，测定果实在贮藏期间的呼吸强度、色度、还原糖含量、淀粉含量、酶活性等指标。结果 在常温贮藏时，相较于PE膜，抗菌袋能够显著抑制板栗的呼吸强度，在贮藏14 d时可较好地抑制板栗的菌落总数和腐烂率的变化。在低温贮藏时，采用抗菌袋和PE/PA膜在贮藏15 d时均有较好的抑菌效果，抗菌袋对板栗腐烂率的抑制效果更为显著，在贮藏60 d时板栗的腐烂率仅为4.44%。在2种温度下，不同的包装材料对栗仁的色泽均无显著影响。结论 采用抗菌袋包装结合低温贮藏能有效抑制板栗在贮藏过程中微生物的生长，延缓其腐烂速度，提高其经济价值。     

车用燃气的存储技术及吸附存储材料的研究进展

在以氢和天然气为主的车用燃气的存储技术中,吸附存储材料以其密度小、吸脱气体速度快等优点使吸附存储成为一类极具发展潜力的存储技术.详细介绍了活性炭、活性碳纤维、碳纳米管、金属有机物、氮化硼纳米管和玻璃微球等车用燃气吸附存储材料的研究现状,并介绍了碳基材料超临界吸附理论的研究情况,展望了燃气吸附存储材料的研究方向.     

性能贮存可靠性评估及贮存寿命预测方法

在介绍贮存可靠性与条件贮存可靠性的基础上,针对一次性产品的性能贮存可靠性试验的特点,提出了性能贮存可靠性评估及贮存寿命预测的基本思路和方法。通过算例说明了本文提出的评估和预测思路的可行性与合理性,同时也分析了这种贮存可靠性评估和寿命预测方法对于一次性产品的适用范围。     

Mg-Ni储氢合金箔的制备及储氢性能研究

根据机械合金化和界面固相扩散反应的基本原理,开创性地提出了机械碾压法加化学镀配料加氢化燃烧合成的三步合成工艺,制备出高容量的Mg-Ni储氢合金.研究表明,气相燃烧过程中的温度、压力及保温时间对燃烧产物的组成有较大的影响,通过对反应过程的分析得出了合成Mg-Ni合金箔的反应机理.热分析测试表明所得Mg-Ni合金箔在220℃放氢,放氢量为2.6wt%.     

某公司仓库储区和货位的分析与改进

针对某公司仓储管理中储位管理存在的问题,对该公司的储区和货位进行了分析,提出了动静储区分区的改进方案,分区后总行走时间减少了近61%.此外,还对动储区建立整数线性规划模型,以作业人员行走时间最短为目标,进行了优化,给出动储区具体货位分配方案.     

Storage assignment policy tradeoffs

A model is presented for developing the state probability distribution of aggregate space requirements in a randomized storage system as a function of the level of variation in item retrieval activity. This model provides a tool to analyse tradeoffs in space requirements and retrieval efficiency associated with dedicated and randomized storage policies. The technique extends previous work by accounting for space reductions associated with randomized storage in estimating average item retrieval costs. A sample problem is presented along with an analysis of randomized and dedicated storage policy performance.     

Storage of solar energy

A framework is presented for identifying appropriate systems for storage of electrical, mechanical, chemical, and thermal energy in solar energy supply systems. Classification categories include the nature of the supply system’s setting; the type of energy supplied ; the type of solar energy collection system used (including ‘ indirect ’ solar energy, such as wind and hydropower) ; the type of energy stored ; and some other characteristics of the storage system. A global insolation summary is used to exhibit the diversity of requirements for solar energy storage in different settings. Comments are then made on the need and opportunities for 24 hr storage of electrical energy in batteries; backup systems that use stored chemical fuel derived from solar energy; storage of intermediate temperature heat as heat of hydration of compounds such as sulfuric acid; annual storage of low temperature heat in fresh water ponds or aquifers; and annual storage of ice produced in places with cold winters. Arguments are presented for using a systems approach to the selection of solar energy storage methods appropriate for use in specific types of settings.     

Gas Storage in Fullerenes

Fullerenes and in particular C₆₀ have been shown to store effectively a wide range of gases from simple monatomic rare gases to diatomics and polyatomics. A review of the research in this area conducted at ANSTO is given. The trapping of Ar, Kr, Xe, and CO₂ are discussed in detail whilst preliminary results pertaining to N₂O, CH₄, CF₄, C₂H₆ and SF₆ are also reported. A range of techniques have been used to elucidate both the structure of the new fullerene intercalated solid and the trapped gas itself. The preponderant techniques used, include infra-red absorption spectroscopy (IR), X-ray powder diffraction a (XRD), neutron powder diffraction (NRD), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA).     

Gas Storage in Fullerenes

Abstract

Fullerenes and in particular C₆₀ have been shown to store effectively a wide range of gases from simple monatomic rare gases to diatomics and polyatomics. A review of the research in this area conducted at ANSTO is given. The trapping of Ar, Kr, Xe, and CO₂ are discussed in detail whilst preliminary results pertaining to N₂O, CH₄, CF₄, C₂H₆ and SF₆ are also reported. A range of techniques have been used to elucidate both the structure of the new fullerene intercalated solid and the trapped gas itself. The preponderant techniques used, include infra-red absorption spectroscopy (IR), X-ray powder diffraction a (XRD), neutron powder diffraction (NRD), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA).     

马铃薯储藏库设计概述

随着马铃薯加工业和市场经济的发展，马铃薯加工品种的需求量增长很快。马铃薯的储存显得非常重要。文章根据实际工程经验，并参考国内外相关文献，对马铃薯储藏库的设计作简要概述。     

刮刀式冰蓄冷系统蓄冰槽温度特性研究

对刮刀式冰蓄冷系统蓄冰槽温度特性进行了实验研究,结果表明:水泵流量改变、冰浆发生器处阀门开度改变会对蓄冰槽内溶液温度特性产生影响,为减弱蓄冰槽内溶液的温度分层可以考虑采用机械装置增加扰动,在槽底对称布置的24个出冰口有利于槽内溶液混合均匀以及冰品的均匀分布.     

Storage capacity of holo-interferograms

The practical storage capacity of a holographic medium can be found by finely comparing reconstructions from independent holograms of an information-dense object wave. With the help of two orthogonally polarized reference waves, a pair of volume holograms is recorded simultaneously at imprint densities as high as 4.1 x 10(10) bits/cm3. As a consequence of polarization, the holograms are not mutually coherent, and the twin encodings of the object wave can be reconstructed separately. These are brought into fine registration interferometrically and then scanned by a CCD camera. Experiments on glass-mounted Agfa 8E56, a fine-grained silver halide emulsion designed for holography, are reported. When the object wave was moderately dense in information, grain noise was the main cause of the reconstruction errors. Emulsional plasticity was the more significant factor both when the object wave was optically sparse and when it was extremely dense. Plasticity noise limited the information that could be retrieved to 2.7 x 10(10) bits/cm3, which is 2 orders of magnitude below the capacity suggested by the emulsion's bandwidth and grain-noise figures alone.     

蓄冷板对冷库保温的影响实验

目的 为了缓解当下电网的电力失衡问题,提出利用蓄冷材料与冷库相结合的方案,使相变材料在用电低峰时期蓄冷,在用电高峰时期释冷,以缓解电网负荷。方法 测量不同材料的热工性能,筛选出适合冷库温度的相变蓄冷材料,制成蓄冷板,并在实际冷库中进行实验。收集安放在库内温度测点的数据,并对数据进行分析。结果 放置蓄冷板后,冷库的温度波动值从2 ℃降至0.5 ℃。放置蓄冷板后库内温度的不均匀系数在4 h后为0.56,而未放置蓄冷板库内温度的不均匀系数在2.5 h时已达到1.2。放置蓄冷板后冷库的温度回升时间较对照冷库最高延缓了126 min,放置蓄冷板3 h后冷库温度上升了8 ℃,而无蓄冷板的冷库温度上升了13 ℃。结论 蓄冷板可以有效缓解冷库温度的回升,并使冷库内温度分布得更加均匀。未来可通过提高蓄冷材料和冷板材料的导热系数,以及添加冷板肋片等方法来强化换热,达到更好的释冷、保冷效果。     

储热型吸附式空气取水器吸附剂与储热材料的选择

本文针对太阳能储热型吸附式空气取水器吸附剂和储热材料的选择,分别研究了以膨胀硫化石墨(ENG-TSA)和以活性炭纤维(ACF)毡为基质的复合吸附剂的导热系数和吸附性能,硬脂酸/膨胀硫化石墨(ENG-TSA-SA)复合相变储热材料的导热系数与DSC测试。结果表明:ENG-TSA-LiCl复合吸附剂的导热系数最大可达5.67 W/(m·K),吸水量最大可达1.54 g/g。真空浸渍法获得的ACF-LiCl复合吸附剂的吸水量比大气浸渍法高。ASLi40固化吸附剂的吸水量为1.59 g/g,适用于大批量生产。ENG-TSA-SA的径向导热系数为22.2 W/(m·K),相变温度区间为65.9~77.1℃,适用于太阳能等低品位热能。储热器的添加明显延缓了解吸温度降低的趋势。