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Modeling Of Solar Photovoltaic Assisted Vapor Absorption Refrigeration System for Running an Ice Factory 制冰厂运行太阳能光伏辅助蒸汽吸收制冷系统建模
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403016069
K. Talukdar
In this study a detailed analysis for running an ice factory in city New Delhi located in India has been analyzed. The ice factory is operated throughout the day and throughout the year. The solar photovoltaic (PV) modules is used for powering of vapor absorption refrigeration system(VARS). The ice production of the ice factory is done by the evaporator of VARS. The cooling load of evaporator is 50 TOR(tones of refrigeration) and heat exchanger effectiveness is 0.8. The water is converted to ice to -10 o C from ambient temperature. It is found that 5943 modules in parallel (each having two modules in series) of Central Electronics Limited make PM 150 can meet the electrical energy demand of the VARS throughout the year. The power back up is provided using battery bank of rated capacity of 59430 Ah.
在本研究中,详细分析了运行在城市新德里位于印度的冰厂进行了分析。这家制冰厂全天、全年都在运作。太阳能光伏(PV)模块用于蒸汽吸收制冷系统(VARS)的供电。制冰厂的制冰由VARS的蒸发器完成。蒸发器的冷负荷为50 TOR(制冷吨),换热器效率为0.8。水在零下10摄氏度的环境温度下变成冰。结果发现,中央电子有限公司5943个模块并联(每个模块有两个模块串联)使PM 150可以满足VARS全年的电能需求。备用电源采用额定容量59430 Ah的蓄电池组供电。
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引用次数: 2
Time History Analysis of Concrete Gravity Dam with Gallery and Dam without Gallery by Using STAAD.Pro 混凝土重力坝有廊坝与无廊坝的时程分析。箴
Pub Date : 2017-05-01 DOI: 10.9790/1684-1402083539
Urmila S. Sarde, A. Jaiswal
Concrete Gravity Dams are important lifeline structures and represent the fragrance of people’s standard of living. Dam structures that span navigable waterways are inherently at a risk for seismic vibrations and as such they must be designed to resist these vibrations. These are very complex structures and subjected to various types of forces both static and dynamic in nature. However, these earthquake vibrations are fundamentally dynamic in nature and a static analysis procedure may not be adequate in designing hydraulic structures like Dam. This paper presents the dynamic time history analysis of a concrete gravity dam by using STAAD-PRO. Here Finite Element Approach is used to analyze the dam. A concrete gravity dam model is prepared in STAAD-PRO to perform the time history analysis and a comparison is done between dam with gallery (i.e openings) and dam without gallery (i.e openings).Seismic analysis is performed for both dam with gallery (i.e openings) and dam without gallery (i.e openings). Various basic loads and load combinations are used in analysis of concrete gravity dam according to IS 6512:1984 Table 1 represents basic loads and load combinations used during the analysis.
混凝土重力坝是重要的生命线结构,是人民生活水平的象征。跨越通航水道的大坝结构本身就存在地震振动的风险,因此它们必须设计成能够抵抗这些振动。这些都是非常复杂的结构,受到各种类型的静力和动力的影响。然而,这些地震振动本质上是动态的,静态分析程序可能不足以设计大坝等水工结构。本文采用STAAD-PRO软件对某混凝土重力坝进行动力时程分析。本文采用有限元法对大坝进行分析。在STAAD-PRO软件中建立混凝土重力坝模型进行时程分析,并对有廊道(即开口)坝与无廊道(即开口)坝进行对比。对有廊道(即开口)和无廊道(即开口)的大坝进行了地震分析。根据IS 6512:1984对混凝土重力坝进行分析时使用了各种基本荷载和荷载组合,表1为分析时使用的基本荷载和荷载组合。
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引用次数: 1
Comparison of Newton Raphson and Hard Darcy methods for gravity main nonlinear water network 重力主非线性水网的Newton Raphson法与Hard Darcy法比较
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403030717
A. Saad, Hasan Ahweedi, HusamEL DinAbdulkaleq, A. Khaleel, A. Abdulsalam
Abstract: A water network of 24 pipes depending on mainly gravity and covers an area of 3.78 square kilometers was taken an as a case study to test and compare the analysis. The governing equation of this network are internal flow in pipe equations, which consist of the continuity equation, the modified Bernoulli's equation, and the head loss due to the length of the pipe. The three equations are nonlinear algebraic equations because of the square power of the discharge in the head loss equations, which need to be solved numerically. Hard Darcy method and Newton Raphson method are used to solve the system of nonlinear equations, and to compare the solution.So, twenty four nonlinear equations (nine Bernoulli's equations and fifteen continuity equations) in twenty four unknowns discharges were got by these two method by using MATLAB code. There are not differences in the resulted discharges between Hard Darcy and Newton Raphson methods. Also, it was found that Newton Raphson was faster than Hard Darcy Method when they compared by the number of iteration. The final solution of the discharges have tested by the basic of fluid mechanics that says the summation of head losses inside a loop must be equal zero which can be seen clearly in the plots of the two methods.
摘要:以面积3.78平方公里、以重力为主的24条管网为例,进行试验对比分析。该管网的控制方程为管内流动方程,由连续性方程、修正伯努利方程和管道长度引起的水头损失组成。由于水头损失方程中有放电功率的平方,这三个方程都是非线性代数方程,需要进行数值求解。采用Hard Darcy法和Newton Raphson法求解非线性方程组,并对其解进行了比较。利用MATLAB代码,用这两种方法得到了24个未知放电中的24个非线性方程(9个伯努利方程和15个连续性方程)。硬达西法与牛顿-拉夫森法所得放电量无差异。通过迭代次数的比较,发现Newton Raphson算法比Hard Darcy算法更快。用流体力学的基本原理对放电的最终解进行了检验,即回路内水头损失的总和必须等于零,这在两种方法的图中可以清楚地看到。
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引用次数: 1
Optimization of the Seaport Facilities in Complex System Queue Using Fuzzy Logi 基于模糊逻辑的港口设施复杂系统队列优化
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403027078
A. Budiono
As is well known, that the queuing system model of ships in port plays an important role in efforts to improve the quality of service. Therefore, when used in accordance queuing system and supported by the provision of adequate support facilities it can be ascertained that the services that can be provided would be optimal. In this paper, we will report the results of research on the optimization of port facilities in the complex queuing system using fuzzy logic. We have been developing a methodology optimization of port facilities by a modeling queuing systems and simulation where the system queue complex usually consists of multiple servers connected to a particular system and has a different behavior, among which the pattern of arrival of the vessel, type of service and pattern of services provided. Calculation of seaport facilities optimization with fuzzy logic models using the arrival of the ship has a Poisson distribution of patterns while the service time has an exponential distribution pattern with unlimited resources. We found that fuzzy model is relatively faster than the existing mathematical model and fuzzy model has a high flexibility for all possible inputs are provided compared to the mathematical model.
众所周知,港口船舶排队系统模型在提高服务质量方面发挥着重要作用。因此,如果按照排队制度使用,并提供足够的支援设施,可以确定所提供的服务将是最佳的。在本文中,我们将报告在复杂排队系统中使用模糊逻辑的港口设施优化的研究结果。我们一直在通过建模排队系统和仿真开发港口设施优化方法,其中系统队列复杂通常由连接到特定系统的多个服务器组成,并且具有不同的行为,其中船舶到达模式,服务类型和提供的服务模式。用模糊逻辑模型计算港口设施优化时,船舶到港时具有泊松分布模式,而服务时间在资源无限的情况下具有指数分布模式。我们发现模糊模型比现有的数学模型相对更快,并且与数学模型相比,模糊模型提供了所有可能的输入,具有很高的灵活性。
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引用次数: 0
Water Quality Assessment and Comparative Study of Coagulants and Flocculants with Different Dosages –A Review 不同投加量混凝剂与絮凝剂水质评价及比较研究综述
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403011214
P. Pathak, A. Jadhav, J. Chhajed, P. Kshirsagar, Mr.S.A. Waghmare
Water resources are equally important for natural ecosystem and human development. Rapid industrialization and indiscriminate use of chemical fertilizers and pesticides in agriculture are causing deterioration of water quality by varied pollution in aquatic biota. Due to use of contaminated water, human population suffers from water borne diseases. It is therefore essential to assist the quality of water at regular intervals of time. Parameters that may be tested include temperature, pH, and turbidity, hardness. The present review paper describes about the comparative study of water quality by using different dosages of coagulants and flocculants like Alum, Poly Aluminum chloride (PAC), Poly Electrolyte (PE) and combination of PAC+PE.
水资源对自然生态系统和人类发展同样重要。快速的工业化和在农业中滥用化肥和农药,使水生生物群受到各种污染,导致水质恶化。由于使用受污染的水,人类遭受水传播疾病。因此,必须定期改善水质。可测试的参数包括温度、pH值和浊度、硬度。本文介绍了明矾、聚氯化铝(PAC)、聚电解质(PE)及PAC+PE组合等不同投加量的混凝剂和絮凝剂对水质的影响对比研究。
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引用次数: 0
Decision Making Under Operation Performance by Fuzzy Set Theory 基于模糊集理论的经营绩效决策
Pub Date : 2017-05-01 DOI: 10.9790/1684-1402084752
A. Das, A. Pandey
The aim of this paper is to apply fuzzy soft set theory to predict the decisionmaking of purchase goods. In approximate reasoning, relations on the fuzzy parameterized soft sets have shown to be of a primordial importance. The basic premises of fuzzy soft set are presented as well as a detailed analysis of fuzzy logic developed to solve various decision and matrix application problems.
本文的目的是将模糊软集理论应用于商品购买决策的预测。在近似推理中,模糊参数化软集上的关系具有极其重要的意义。给出了模糊软集的基本前提,并详细分析了为解决各种决策和矩阵应用问题而开发的模糊逻辑。
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引用次数: 0
A Trajectory Based Methods for Parallel Scheduling of Machines and AGV’S in an FMS Environment FMS环境下基于轨迹的机械与AGV并行调度方法
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403021722
P. Sreenivas, Shaik Khaja Peer Saheb, M. Yohan
Now a days latest manufacturing sectors facing difficulty with two different categories of processing of parts like semi-finished jobs and finished jobs. In literature it is assumed that, for machine scheduling models, either there is infinite number of handling or carrier systems for the job to reach desired location or jobs are distributed on the spot from one workstation to other without travel time involved. Further it is observed that simultaneous scheduling of machines and AGVs in the FMS environments involves certain exceptional difficulties as they are treated as NP hard problems. Those difficulties are assigning AGV in sequence of task along with operation sequence of machines and operation order of machines based on precedence constraints. Trajectory based methods are powerful metaheuristic for solving combinatorial optimization problems like NP hard problems such as scheduling. In this paper, author addressed about parallel scheduling of machines and AGV’s for determining minimum makespan, mean makespan and tardiness using simulated annealing algorithm and tested over 20 standard benchmark problems collected from literature. Finally, the proposed method is compared with literature results and conclusions are depicted.
现在,最近的制造业面临着两种不同类别的零件加工的困难,如半成品和成品。文献中假设,对于机器调度模型,要么存在无限数量的搬运系统或运输系统,以使作业到达期望的位置,要么将作业从一个工作站就地分配到另一个工作站,而不涉及旅行时间。进一步观察到,在FMS环境中,机器和agv的同时调度涉及某些特殊困难,因为它们被视为NP困难问题。这些难点是AGV的任务顺序分配以及机器的操作顺序和基于优先约束的机器的操作顺序。基于轨迹的方法是一种强大的元启发式方法,可用于求解诸如调度等NP困难问题的组合优化问题。本文用模拟退火算法研究了机器和AGV的并行调度问题,以确定最小完工时间、平均完工时间和延迟时间,并对从文献中收集的20多个标准基准问题进行了测试。最后,将所提出的方法与文献结果进行了比较,并给出了结论。
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引用次数: 0
Comparison of Cooling Parameters of R134a and R290/R600a R134a与R290/R600a冷却参数的比较
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403028790
D. O. Ariyo, M. A. Azeez, T. O. Woli
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引用次数: 0
Improvement of Black Cotton Soil Properties Using E-waste 利用电子废弃物改良黑棉土壤性质
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403017681
Mangesh Chaugule, S. Deore, K. Gawade, Ambaresh Tijare, S. Banne
Soil Stabilization is the phenomenon which deals with modifying the properties of soil (Index & Engineering) to improve its performance. Stabilization is being used for a variety of engineering works either in its natural form or in a processed form. Eventually all structures rest on soil foundation where the main objective is to increase the strength or stability of soil and to reduce the construction cost. Now a day the utilization of waste products with soil has gained attention due to the increasing problems of waste management. This paper presents the results of an experimental program undertaken to investigate the effect of E-waste at different dosages on black cotton soil. Different dosages of E-waste i.e. 2%, 5% and 8% were added in the soil. The performance of E-waste stabilized soil was evaluated using physical and strength performance tests namely; Atterberg’s limit, specific gravity, compaction test, unconfined compressive test, California bearing ratio (CBR) and direct shear test. Theses test were conducted in order to evaluate the improvement in the strength characteristics of the soil. From the results, unconfined compressive strength of specimen increased with an average of 2.41 kN/m 2 for fixed dosage of E-waste. After performing direct shear test, there was an improvement in angle of friction (Ф). As the percentage of E-waste increased, Ф increased. As bearing capacity is dependent on C and Ф, it was also observed that there is an increase in bearing capacity of the soil.
土壤稳定是指通过改变土壤的特性(指标和工程)来改善其性能的现象。稳定被用于各种工程工程,无论是自然形式还是加工形式。最终,所有的结构都建立在土壤基础上,其主要目的是增加土壤的强度或稳定性,并降低施工成本。随着废物管理问题的日益突出,废物与土壤的利用日益受到人们的关注。本文介绍了一项研究不同剂量电子垃圾对黑棉土影响的实验项目的结果。在土壤中添加2%、5%和8%的不同剂量的电子垃圾。采用物理性能和强度性能试验对电子垃圾稳定土的性能进行了评价;阿特伯格极限、比重、压实试验、无侧限压缩试验、加州承载比(CBR)和直剪试验。这些试验是为了评价土的强度特性的改善。结果表明,在电子垃圾添加量固定的情况下,试件的无侧限抗压强度平均提高2.41 kN/ m2。进行直剪试验后,摩擦角有所改善(Ф)。随着电子垃圾比例的增加,Ф也随之增加。由于承载力依赖于C和Ф,因此也观察到土壤的承载力有所增加。
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引用次数: 6
The Impact of Various Surfactants on the Water-in-Diesel Fuel Emulsions 不同表面活性剂对柴油水包乳剂的影响
Pub Date : 2017-05-01 DOI: 10.9790/1684-1403024147
K. Abass
Diesel fuel is a hydrocarbon fuel is located at the middle of the hydrocarbon chain resulting in the distillation tower.This fuel is used commonly in the entire world and especially in Iraq for the production of electrical energy, transportation, and factories. Diesel burning produces large exhaust pollutants which are mostly blackcarbon, NOx, and SOx. These contaminants are widely polluting the surrounding environment and mischievous. In this research, a study on the possibility of mixing the diesel fuel with water to produce an emulsion that reduce the resulting exhaust pollutants from it, and improves the produced energy. This study aims to highlight the impact of using various surfactant agents' types with the formulation of waterin-oil (w/o) emulsions for the Iraqi diesel fuel. The Iraqi diesel was emulsified using salt, sugar, and sodium carbonate as the emulsifying agent to produce water in oil emulsions. The emulsions fuel oil obtained were subjected for many tests to find out its thermophysical and combustion specifications and storage stability of the resulted emulsion to be used in the production of electric power, marine, bricks plants, and transportation.
柴油燃料是一种烃类燃料,位于烃类链的中间产生于蒸馏塔中。这种燃料在全世界普遍使用,特别是在伊拉克,用于生产电能、运输和工厂。柴油燃烧会产生大量的废气污染物,主要是黑碳、氮氧化物和硫氧化物。这些污染物对周围环境有广泛的污染和危害。在这项研究中,研究了将柴油与水混合以产生乳化液的可能性,这种乳化液可以减少由此产生的废气污染物,并提高所产生的能量。本研究旨在强调使用不同类型表面活性剂对伊拉克柴油水油(w/o)乳剂配方的影响。以盐、糖、碳酸钠为乳化剂,对伊拉克柴油进行乳化,使油乳中产生水。对得到的乳化油进行了多次试验,以确定其热物理性能和燃烧性能,以及所得到的乳化油的储存稳定性,以用于电力、船舶、砖厂和交通运输的生产。
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引用次数: 5
期刊
IOSR Journal of Mechanical and Civil Engineering
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