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energy     
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    Research on Key Techniques of Energy Storage of Flywheel Battery
    飞轮电池储关键技术研究
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    Reforming the Constitution of Energy to Improve Energy Utilization
    改革用结构提高源利用率
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    《Effective Energy and Its Balance in Open Cycle Systems》
    一般开口系的有效和有效平衡
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    The Energy Supply System in Luxi Sugar Factory——Its Design Features and Analysis of the Results
    鹿溪糖厂总系统设计特点及效果分析
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    Initial Exploring for the Prospect of Hydrogen Energy as an Agricultural Energy Resources
    氢作为农业源的开发前景探析
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  能源
    Microscale Combustion Performance and Development of Micro Energy System
    微尺度燃烧特性及微能源系统的研制
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    Reforming the Constitution of Energy to Improve Energy Utilization
    改革用能结构提高能源利用率
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    ANALYSIS OF WORKING PERFORMANCE OF EQUAL PRESSURE HYDRAULIC ENERGY
    等压力液压能源工作性能的分析
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    Practice in Temperature Reduction of Superheated Steam from the SHL20-25/400A Type Boiler,with Energy Saving as a Result
    降低SHL20-25/400A型锅炉过热蒸汽温度并节约能源的实践
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    Initial Exploring for the Prospect of Hydrogen Energy as an Agricultural Energy Resources
    氢能作为农业能源的开发前景探析
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  节能
    Energy Saving and the Technical Development of the Marine Diesel
    节能与船用柴油机技术的发展
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    CHEMICAL CLEANING OF MIDDLE OR SMALL BOILERS AND ENERGY CONSERVATION
    中小型锅炉的化学清洗与节能
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    A Study on Energy Saving at Pump Station
    泵站节能的研究
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    The Effect of Notched Fan V Belt on Saving Energy
    凹口型三角风扇皮带的节能效果
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    An Example of Thermodynamics Analysis for a Heat Exchanger and the Way of Saving Energy
    换热器热力学分析实例与节能途径
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  热能
    Several Thermophysical Problems Associated with the Thermal Energy Storage and Its Applications
    热能贮存和应用中若干热物理问题研究
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    A Mathematical Treatment of Regenerative Theory of Secondary Thermal Energy
    二次热能回热理论的数学论证
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    The Application of IFC Formula in Thermal Energy Power Engineering
    IFC公式在热能动力工程中的应用
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    Conversion Between Thermal Energy and Mechanical Energy with a Stable Flow in the Open System
    论开口系统稳定流动时热能与机械能的转换关系
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    THERMOECONOMIC PERFORMANCE EVALUATION OF THERMAL ENERGY STORAGE PROCESS
    热能储存过程的热经济学性能评价
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  energy
Finite energy band-limited functions are reconstructed iteratively
      
When, in addition, the Tolimieri-Orr condition A is satisfied, the minimum energy dual windowoγ ε L2(?) can be sampled as well, and the two sampled windows continue to be related by duality and minimality.
      
Finite-energy high frequency signals, band-pass frequency signals, and band-stop frequency signals are characterized.
      
We use the analytic tools such as the energy, and the Laplacians defined by Kigami
      
On Global Finite Energy Solutions of the Camassa-Holm Equation
      
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It is shown through mathematical analysis that the regenerative utilization in industry must be put in the first place so as to effect secondary utilization of thermal energy. That the strengthening pf technological production and saving of fuel will decrease the thermal consumption per product has also been proved theoretically.The characteristics of closed regenerative utilization in flue gas recycle are discussed proving that the flue gas recycle can save fuel even when a small system is used or when...

It is shown through mathematical analysis that the regenerative utilization in industry must be put in the first place so as to effect secondary utilization of thermal energy. That the strengthening pf technological production and saving of fuel will decrease the thermal consumption per product has also been proved theoretically.The characteristics of closed regenerative utilization in flue gas recycle are discussed proving that the flue gas recycle can save fuel even when a small system is used or when the exchangers do not operate quite smoothly.To realize secondary thermal energy utilization by the waste heat boiler and waste heat power generation alone is not fully invulnerable theoretically.

本文通过数学解析的方法,阐述了在工业企业中开展二次热能利用必须把回热利用置于首位,以促使工艺生产的强化与燃料的更大节约.对降低企业按产品计算的热力消耗指标,也从理论上给予了证明.文中通过燃料节约与生产强化方面产生的单位产品燃料消耗率的降低,说明回热利用的重要性,并进一步叙述实行炉烟再循环的闭式回热利用方式的某些特性,明确炉烟再循环对小型机组或工业炉用换热器不尽完善时同样具有节约燃料的功能.本文旨在指出当前仅以余热锅炉、余热发电为主的工业企业二次热能利用工作,在理论上是不完全正确的,也就是说,真正大幅度地节约燃料与促进生产强化并不是动力利用,而是回热利用.

A mathematical model using zone method to calculate radiating heat transfer is described. In the zone method, the system is divided into surface zones and gas zones and the number of which depends on the accuracy of results desired and calculation time required. The temperature profiles in a furnace are obtained by solving simultaneously energy balances on each zone. As originally developed by Hottel and Cohen, the direct exchange areas are limited to cubes and squares. In this paper, the derivation...

A mathematical model using zone method to calculate radiating heat transfer is described. In the zone method, the system is divided into surface zones and gas zones and the number of which depends on the accuracy of results desired and calculation time required. The temperature profiles in a furnace are obtained by solving simultaneously energy balances on each zone. As originally developed by Hottel and Cohen, the direct exchange areas are limited to cubes and squares. In this paper, the derivation of the direct exchange area equations is extended between any two zones in the box or cylindrical furnace.These equations are adaptable to any dimension of rectangles, coaxial cylinder walls, end rings and other shapes.

本文叙述了以区域法计算辐射传热的数学模型。在区域法中,系统被分为表面区和气体区,区域数取决于所要求的结果精度和计算时间。炉子的温度分布可通过解每区的能量平衡而得。作为Hottel和Cohen的原始开发,直接交换面积限于立方体和正方形;本文给出了在方箱炉、圆筒炉中任何两区之间直接交换面积方程式的推导。这些方程式可适用于任何大小的矩形、共轴圆筒壁、炉底环形区和其他形状。 本文提供了一个关于烃类一段蒸汽转化炉和圆筒炉的设计方法。计及反应动力学、对流传热、管内压降,采用区域法计算这些炉子的温度分布,从而预言工艺气、烟气、管表面和耐火墙表面的温度分布。计算结果与工厂实测数据相吻合。

In this paper, the "exergy coefficient" and the "exergy efficiency" η. are proposed as: where Q1 is the heat collected by solar collector, △E is the useful energy included in Q1, η is the "collector efficiency" Then =1 and η are approximately presented as a linear function of temperature T, such as η=k,(t2 - a), and -k2(t2 - b). So ηe is a parabolic function and it exists a maximum exergy efficiency ηemax= |k1k2| and the corresponding optimum operation temperature would be t2,opt =a+b/2 It is shown...

In this paper, the "exergy coefficient" and the "exergy efficiency" η. are proposed as: where Q1 is the heat collected by solar collector, △E is the useful energy included in Q1, η is the "collector efficiency" Then =1 and η are approximately presented as a linear function of temperature T, such as η=k,(t2 - a), and -k2(t2 - b). So ηe is a parabolic function and it exists a maximum exergy efficiency ηemax= |k1k2| and the corresponding optimum operation temperature would be t2,opt =a+b/2 It is shown that the method proposed can used to predict the optimum operation temperature. It is suggested that it may be used as the target for selecting collector and optimizing solar power system.

本文提出系数其中: Q1-太阳能集热器所收集的热量 △E-在Q1中的“可用能” η-集热器效率 对η可分别近似表示为T的线性函数,如η=K1(T2-a)和=k2(k2-b);则ηe是一条抛物线,并存在着最大的效率ηemax=|k1k2|(a-b)2/4,相应的最佳运行温度是 t2,opt= 1/2(a+b)。 由本文提供的分析计算方法,可以迅速确定最佳运行温度。建议可以用这种方法作为选择集热器及太阳能动力系统的一种指标。

 
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