分壁精馏技术进展

分壁精馏技术作为一种完全热耦合型的分离过程,具有节能降耗的显著特点。本文首先从分壁精馏技术的出现与发展、分离过程、技术关键和适用范围四个方面作了详细介绍。分壁精馏技术作为一种全新的分离技术,其计算方法、控制方法和结构设计是该技术的三个关键因素,本文分别对其研究现状和存在问题作了详细的阐述,并结合现有的工业应用案例介绍了该技术在不同领域的应用进展,最后指出国内应该加快技术的工业化应用进程,并积极进行知识产权的保护。     

分离式热管余热利用系统的研究

分离式热管技术是一项新技术。本文介绍了作者对该技术进行的试验研究及其余热利用系统的研制开发情况。实践证明，该系统的设计是成功的，取得了显著节能效果，有广阔的应用前景。     

低辐射镀膜玻璃的节能原理及应用

低辐射镀膜玻璃是一种新型环保节能玻璃，本文介绍了低辐射镀膜玻璃的节能原理和应用范围，指出其在应用中应注意的若干问题，提出应高度重视该产品的开发、生产、理论研究和相关标准的制定，大力推广使用低辐射镀膜玻璃，促进我国节能事业的发展。     

双通道燃烧器的应用与改进

双通道燃烧器是一种强化燃烧型燃烧器，本文结合该燃烧技术的特点，对该燃烧器的应用及改进措施提出一些建议供参考。     

燃用生物质的循环流化床热风系统结构与运行

本文介绍了一种燃用生物质玉米芯的循环流化床热风系统的结构及其运行，这套系统利用玉米芯燃烧产生的热量来生产热风，热风供种子烘干企业烘干玉米种子式样。本文主要介绍这套系统的组成以及主要部分的结构，首台采用该技术的热风系统已在山东登海先锋种业公司投产。运行中主要出现的问题是锅炉尾部积灰比较严重。     

受控脉动燃烧技术的研究及应用

介绍了一种成本低廉，能降低NOx排放50％-90％，提高燃烧效率，节约燃料的受控脉动燃烧技术。对受控脉动燃烧技术的原理、影响参数，以及该技术在国内外研究应用现状进行了介绍，并就脉动燃烧技术今后研究的方向提出了一些看法。     

内燃机性能的模糊评估方洁

本文应用模糊集理论，提出了一种评估内燃机性能优劣的定量描述方法，在内燃机产品开发与改进时，为评估其技术性能水平提供依据。示例计算表明该方法是可行的。     

中小排量摩托车发动机VVT机构的试验研究

本文在国内外VVT技术的基础上，以嘉陵JH125摩托车发动机为研究对象，研制了一种可变配气机构，通过对这套机构进行试验研究、机构的优化设计，实现了VVT技术在摩托车发动机上的应用。     

水煤浆在处理淮化废液上的应用及展望

对水煤浆的应用现状进行回顾性综述。介绍国内废液水煤浆的研究概况、水煤浆技术用于处理淮化有机废液的研究，并对废液水煤浆的市场应用前景进行分析，认为废液水煤浆实现了废液的资源化利用，最后对应用废液水煤浆技术可能出现的问题进行了探讨。     

热回收蓄能空调系统的应用研究

本文重点阐述了热回收技术和蓄能技术在空调系统中的应用，在工作原理、节能循环分析、经济性分析、控制和应用注意事项等多方面进行了初步研究，研究结果表明该节能技术在制冷空调系统中的运用大有前途，可以得到大力的推广。     

Distributed parameters modeling for evaporation system in a once-through coal-fired twin-furnace boiler

In this paper, a distributed parameter model for the evaporation system of a subcritical once-through, coal-fired, twin-furnace boiler based on 3-D temperature field reconstruction is developed. The imaginary wall surface was put forward to simplify the twin-furnace problem. The mathematical model was formulated for predicting the transient distributions of parameters, such as the heat flux, the metal-surface temperature and the steam quality; while considering the non-uniform distributions of the surface heat transfer coefficient and frictional resistance coefficient. The model was based on the 3-D temperature distribution got by a flame image processing technique. The model was validated by some measurable parameters of the evaporation system at three typical loads. The results show that the heat flux and the temperature which are located at the overlapping region of the two tangential flames are higher than those in other corners. This distributed parameter model on evaporation system reflects the in-situ operating status of the power plant boiler, which may lead to the subsequent research on a supercritical boiler.     

EHD强化传热研究中的重要问题——电场特性的影响规律

在文献综述的基础上,分析了EHD强化传热中,电场特性的重要性和研究现状,指出了当前研究中的不足之处及存在的矛盾,为在EHD强化传热研究中,进一步进行电场特性影响规律的试验和理论探讨提出了建议。     

EHD强化传热研究中的重要问题一电场特性的影响规律

在文献综述的基础上,分析了EHD强化传热中,电场特性的重要性和研究 现状,指出了当前研究中的不足之处及存在的矛盾,为在EHD强化传热研究中,进 一步进行电场特性影响规律的试验和理论探索提出了建议。     

Scattering and image contrast simulation for double wall radiography of pipes

Radiographic image quality, which is quantified by radiographic sensitivity measurements, is significantly influenced by parameters such as scattering, effective attenuation coefficient and image contrast. In the present work, the Monte Carlo method has been utilized to simulate Gamma ray scattering and image contrast for double wall radiography of pipes and some experiments have been designed to determine the radiographic sensitivity and measure the effective attenuation coefficient. Wire type image quality indicators were simulated as artificial defects and the threshold contrast and minimum optical density difference for viewing each wire were investigated. It was found that the maximum allowable source to film distance for double wall exposure and single wall viewing technique was 1.4 times the outside diameter of the pipe and the image contrast and radiographic sensitivity were higher for this technique in comparison with the double wall viewing technique. The double wall exposure and double wall viewing technique is proposed to be used when the minimum source to film distance is higher than 1.4 times the outside diameter.     

汽轮机带冠叶片振动特性研究进展

带冠叶片技术是汽轮机的一项新颖技术，通过对带冠叶片各项研究工作的分析和整理，全面介绍了汽轮机带冠叶片的结构型式、有限元模化方法、动态特性分析以及相关的试验研究工作，并提出了需要进一步开展研究的问题。     

Gas-phase particle image velocimetry (PIV) for application to the design of fuel cell reactant flow channels

Because the parasitic load on most polymer electrolyte fuel cell systems is dominated by pressure losses across the flow fields, understanding the flow channel dynamics has garnered significant recent attention. The current work is aimed at enabling advanced design of reactant flow channels by elucidating the details of the velocity fields within various reactant flow channel geometries. Gas-phase measurement is critical to ensuring that the results are valid for real fuel cell systems, and for application of this technique to the study of flow channels with two-phase obstruction phenomena. In the current research, gas-phase velocity fields have been measured using particle image velocimetry (PIV) in representative geometries, including a straight channel (for technique validation) and a 180° switchback with channel-to-land ratio of 1:1. The accuracy of the measurement depends on the ability of the seed particles to follow the flow. Numerical simulations have been performed to develop a criterion for identifying appropriate seed particles. The research presented is a first step toward measuring velocity fields in novel flow reactant channels in operational cells.     

Simulation of momentum and energy transfer in a porous medium nonsaturated by an incompressible fluid

This work studies the transport phenomena in a nonsaturated flow of a newtonian fluid through a rigid porous matrix. A mixture theory approach is used in the modelling of the fluid flow and the heat, transfer problem. The mixture consists of three overlapping continuous constituents: a solid (porous medium), a liquid and an inert gas, assumed with zero mass density and thermal conductivity. A set of four nonlinear partial differential equations describes the problem which is approximated by means of a Glimm's scheme, combined with an operator splitting technique, for the hyperbolic equations and a finite-difference scheme for the elliptic ones.     

抛物柱面聚焦器焦平面上辐射通量分布的理论和实验研究

对抛物柱面聚焦器焦平面上的辐射通量分布作了模拟计算和实验研究。计算时采用经某些改进的“半有限积分法”使之更能反映实际运行情况。实验研究采用摄影法，分别以太阳和月亮为光源的折摄焦平面上的像斑。模拟计算与实验结果比较吻合。     

应用图像处理技术进行预混层流火焰传播速度的在线测量

利用图像处理技术，根据层流预混火焰稳定燃烧的条件结合预混火焰燃烧模型，设计了火焰传播速度在线实时测量系统，通过图像采集在线获取火焰的静态图像，然后自动对图像进行滤波，边缘提取，再进行计算得到火焰传播前沿面积，在线算出火焰传播速度，这种方法具有非接触式测量的优点，利用它不仅可以测量层流预混火焰的传播速度，同时还为层流火焰的燃烧机理的研究提供一种直接的手段．