T R A C K       P A P E R

Login Panel

Close tab

Password Meter

Volume 6 Issue 10 (October 2019)

S.No. Title & Authors Page No View
1

Title : Heat Transfer Enhancement: A Review of Ongoing Issues

Authors : Ranjan Kumar, Shreya Agarwal

Click Here For Abstract

Download Certificate
Abstract :

In this paper, we discuss about various methods adopted by researchers around the world for heat transfer enhancement. Three major categories of heat transfer enhancement techniques viz. annihilation of thermal boundary layer, employment of magnetohydrodynamics flow and enhancement of critical heat flux during boiling are studied in brief. We also present about the advantages as well as drawbacks of each one of them. There are various field of application in the real world where these methods can be utilized, but each has its own limitations which we discuss in the current work. Through this work we put forward a well comprehension of the ongoing issues in heat transfer, thermal management and energy savings which are always the centre of attraction for the researchers from wide-ranging field in engineering.

1-4
2

Title : Optimization of Harmonic Identification Methods in the Kinshasa Distribution Power Grid

Authors : Mathangila Kimeya, Lidinga Mobonda Flory, Okemba Rodrgue Armel Patrick, Nsongo Timothee, Bandekela Kazadi Andre, Omboua Alphonse

Click Here For Abstract

Download Certificate
Abstract :

In this paper, we present various mathematical methods for the identification of harmonic in the electrical energy distribution network. The developed equations addressed the harmonic problem in the distribution transformer.

5-12
3

Title : Impact of Distributed Generation in Distribution Network Losses and Voltage Profile

Authors : Prahlad Pokharel, Prof. Dr. Laxman Poudel

Click Here For Abstract

Download Certificate
Abstract :

This paper presents the impacts of installing DG on a distribution circuit. The work is focused on analyzing the impact of DG installation on distribution network operation including voltage analysis and electric losses of the system. Different DG penetration levels, locations and the impacts of installing one large-scale DG on the main distribution line and distributing it several locations on voltage profile and losses are explored. IEEE 34 node test feeder and Nagarkot feeder of Bhaktapur distribution system was built using its one-line diagram in DIgSILENT PowerFactory 2017 to perform detailed analysis. The research involves several case studies that explore the impacts of installing distributed generation (DG) on a distribution network operation including the voltage profile and losses of the system. Wind Turbine Generators are introduced as Distributed Generators (DGs) at various nodes and the impacts that DG produces on power losses and voltage profile is studied. Simulated results obtained using load flow are presented and discussed.

13-20
4

Title : Determination of Photovoltaics Hosting Capacity of 33kV Network in Province No. 1, Nepal

Authors : Ashish Nepal, Nawraj Bhattarai

Click Here For Abstract

Download Certificate
Abstract :

The unpredictable nature of output of alternative energy sources like Solar PV often become troublesome for the smooth operation of electrical energy transmission/distribution system. Hence, before interconnecting such sources to the transmission/distribution network, it is necessary to assess if the variation power quality parameters of the hosting system (Hosting Capacity) lies within the standard criterion. This study identifies the hosting capacity of Photo-Voltaic systems in a 33 kV network of Integrated Nepal Power System in Province No. 1, Nepal. Time domain load flow has been carried out to study the system margins to accommodate given size of photo voltaic system. Load flow simulation are also carried out for both Wet and Dry season indicating times with excess and scarce generation in the system. The size of the generating units fed to two different buses are gradually increased and the hosting capacity has been analysed. It is seen that, with existing infrastructures, installation of generating units up to 30 MWp is suitable.

21-25
5

Title : Composes carbonyles majeurs et indices physico-chimiques des huiles essentielles de deux especes du genre Cymbopogon (Poaceae) du Congo-Brazzaville

Authors : Belline Ndzeli Likibi, Gouollaly Tsiba, Aime Bertrand Madiele Mabika, Arnaud Wilfrid Etou Ossibi, Samuel Nsikabaka, Jean-Maurille Ouamba

Click Here For Abstract

Download Certificate
Abstract :

The hydrodistillation of the dry leaves of Cymbopogon citratus (DC) Stapf and Cymbopogon nardus (L.) Rendle harvested in the southern part of Brazzaville (Makelékelé) yields yellow essential oils with respective yields of 1,54% and 2.34%. These were subjected to physico-chemical analyzes and then characterized by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The physical and chemical properties evaluated were the refractive index and the acid number, the respective values of which are (1.4887 and 0.224) for the essential oil of Cymbopogon citratus and (1.4742 and 0.280) for the essential oil of Cymbopogon nardus chromatographic and spectrometric analyzes revealed that the essential oil of Cymbopogon citratus is predominantly monoterpene (95.87%) with a preponderance of oxygenated monoterpenes occupying a high level of (90.24%). The hydrocarbon monoterpenes represent (5.63%), the hydrocarbon sesquiterpenes occupy a very small proportion of (0.07%). The essential oil of Cymbopogon nardus is rich in monoterpenes (77.85%) with a predominance of oxygenated monoterpenes (75.89%). The hydrocarbon monoterpenes are very low (1.96%). Oxygenated sesquiterpenes constitute (12.39%), while hydrocarbon sesquiterpenes are poorly represented (3.46%). Geranial (51.99%) and nereral (32.94%) two geometric isomers, carbonyl compounds forming citral are the major components of the essential oil of Cymbopogon citratus while citronellal (32.53 %) is the major carbonyl compound of the essential oil of Cymbopogon nardus, followed by geraniol (26.84%) and citronellol (10.98%). Thanks to the low refractive index, presence and important proportions of geranial (51.99%), neral (32.94%) and citronellal (32.53%), these essential oils could constitute a reservoir of exploitation carbonyl compounds required for the agri-food, cosmetic, pharmaceutical, and chemical and perfume industries.

26-33
6

Title : Effects of openings on the seismic behavior and performance level of concrete shear walls

Authors : Hossein Alimohammadi, Mostafa Dalvi Esfahani, Mohammadali Lotfollahi Yaghin

Click Here For Abstract

Download Certificate
Abstract :

In this study, the seismic behaviour of the concrete shear wall considering the opening with different shapes and constant cross-section has been studied, and for this purpose, several shear walls are placed under the increasingly non-linear static analysis (Pushover).  These case studies modelled in 3D Abaqus Software, and the results of the ductility coefficient, hardness, energy absorption, added resistance, the final shape, and the final resistance are compared to shear walls without opening.

34-39
7

Title : Development of materials for environmental pollution control from cocoa pod shells

Authors : David Leonce KOUADIO, Adjoavi Colette DJASSOU, Akissi Lydie Chantal KOFFI, Karim Sory TRAORE

Click Here For Abstract

Download Certificate
Abstract :

To eliminate pollutants efficiently and at a lower cost, research is focused on the use of agricultural waste as a pollution control material. This work involves the analysis of the physical and chemical parameters of raw carbon from cocoa pod shells. The cocoa shells were crushed using Retsch SK100 brand shredders and sieved from Retsch type sieves to retain only particles with diameters between 0.5mm and 1mm. Pyrolysis was carried out at 400°, 450°, 500° and 550°C in a Nabatherm 30-3300°C muffle furnace. Analysis of the results indicates pyrolysis yields of less than 50% and ash rates varying from 15% to 17.2%. The porosity study showed that carbons developed a heterogeneous porosity with maximum iodine and methylene blue index values equal to 659mg/g and 104.56mg/g respectively and a specific area varying from 427.75m²/g to 588.25m²/g. These physical characteristics allowed to determine the best raw carbons. The modeling of the basic and acid dye adsorption kinetics follows the intra-particle diffusion model. The equilibrium time obtained is 60min.

40-45
8

Title : Gamma Irradiation Effect on Nonlinear characterization of Congo film for application in optical limiting

Authors : Hussain Ali Badran, Mustefa M. Jafer

Click Here For Abstract

Download Certificate
Abstract :

The influence of gamma irradiation on the nonlinear optical properties of Congo dye films prepared by casting method has been reported. The single beam Z-scan technique was used to determine the nonlinear optical properties of the Congo dye doped polymer film. The experiments were performed using cw SDL laser with a wavelength of 532 nm. This material exhibits a negative optical nonlinearity. Optical limiting characteristics of the polymer film were studied. The result reveals that Congo dye doped polymer film can be a promising material for optical limiting applications.

46-49
9

Title : Computing the Subgroup Commutativity Degree, Normality Degrees and Cyclicity Degrees of Dicyclic Group T4n

Authors : Hayder Shelash, Ahmed M. AL-obaidi, Muayad G. Mohsin

Click Here For Abstract

Download Certificate
Abstract :

In this paper we want computed and study subgroup commutative degree, normality degree and cyclicity degree of Dicyclic group. 

50-52
10

Title : Design of ship outfitting production management system based on Group Technology

Authors : Xiao Wang, Xiaoping Ma

Click Here For Abstract

Download Certificate
Abstract :

Based on the analysis of shipyard outfitting manufacturing process and production organization status, outfitting products are classified according to the similarity principle of group technology. The corresponding process coding system is established based on the processing procedure of outfitting products. Through business analysis of outfitting production process, extraction, decomposition and reorganization of outfitting design information, a set of outfitting production management system based on group technology is constructed.

53-56
11

Title : Research Prospect of Intelligent Technology of Ship Coating Process

Authors : Chao XU, Hong ZHOU, Jianfeng LIU

Click Here For Abstract

Download Certificate
Abstract :

Ship painting is an important part of ship construction process. From the initial painting design to the actual application of painting equipment and production management of painting operation, it contains various information such as paint, painting equipment, working hours quota, operation cycle, production management, etc. Under the rapid development of modern information technology, with the application of data analysis technology and the research object of typical coating intelligent equipment and coating production management, the paper establishes the data output interface of coating design and coating intelligent equipment and coating production management process characteristics, and compiles the coating intelligent design technical specifications for intelligent equipment and coating intelligent design technology for coating production management Standard of operation. Based on the 3D model of single data source, the standard of coating engineering definition, intelligent decomposition of coating engineering, coating process information and coating intelligent equipment information are used to develop the integrity characteristic standard of coating 3D model. Analyze and evaluate the auxiliary software of coating design, and carry out the secondary development of coating intelligent software according to the evaluation effect. Based on the analysis of 3D modeling information, production management information and typical coating equipment information in the existing ship coating design process, this paper makes a plan to realize the transformation from traditional coating process design technology to intelligent design in the future and form a complete coating process intelligent design system.

57-58
12

Title : Simulation Research of Double-shell Flat Block Assembly Line on the Basis of Double-flat Floor Pull-in Method

Authors : Wang Yue, HE Lei

Click Here For Abstract

Download Certificate
Abstract :

Rarely can we find documents study on double-flat assembly line on the basis of double-flat floor pull-in method and its simulation research. Thus, this paper present this idea and built a simulation model of double-shell flat floor assembly line by simulation software Plant Simulation and operated this model on the basis of double-flat floor pull-in method. By analysing the outcomes we found blocking situation on several stations. To avoid this problem we use DOE theory to conduct multiple experiments and find a way to change location of buffer stations which can solve this problem. By applying relocated buffer station the blocking situation is well solved.

59-62
13

Title : Instrumentation And Monitoring Of Dams And Reservoirs

Authors : Rajkumar Prasad, Mahabir Dixit

Click Here For Abstract

Download Certificate
Abstract :

Instrumentation and monitoring of dams and reservoirs as part of dam safety programs provide more absolute and appropriate information with regards to the on-going performance of the dam. Their performance during both construction and operation are aimed at safety of dams and acquiring information to be used in progressing future design of dams. Instrumentation and monitoring are necessary in both the reservoir and the river basin, for normal operation and safety of dam. There are many cases of dam failures where early warning signs of failure must have been discovered if a good dam safety-monitoring program had been in place. The use of instrumentation for dam safety concern is increasing as the technology of instrumentation and ease of use advances. For this purpose use of proper instruments is thus very important phenomenon, therefore we must know the various instruments used to find different parameters. The paper presented is oriented to study the instruments essential to successfully implement a dam instrumentation program for dam safety.

63-67
14

Title : Application of Prefabricated Vertical Drains in Soft Clay Improvement

Authors : Mahmoud S. Hammad, Ayman L. Fayed, Yasser M. El-Mossallamy

Click Here For Abstract

Download Certificate
Abstract :

A numerical study is performed to investigate the behavior of embankments built on soft soil deposits improved by the combination of preloading and prefabricated vertical drains. The study utilizes the three-dimensional finite element technique for the back analysis of two embankments in the Changi East reclamation project in Singapore. Different constitutive models are considered and yielded that the soft soil creep model (SSC) is most appropriate to model the behavior of the soft clay deposits. A parametric study is performed to investigate the various factors affecting the required improvement duration and the anticipated residual settlement. The study results show the significant influence of the variation of the PVDs length ratio (PVD depth to soft layer thickness) and spacing on both the duration of the consolidation process and the residual settlement, while the PVDs configuration is found to be of minimal importance.

68-77
15

Title : Application of Modeling Techniques for Solving Misalignment Problem for Large Scale Pumping Stations

Authors : Sami Abd El-Fattah, Ibrahim R. Teaima, M. A. Hashim

Click Here For Abstract

Download Certificate
Abstract :

In all types of rotating machinery application, misalignment is the major concern with machinery health monitoring. Usually, misalignment effects are seen at coupling, bearing and at support. Coupling  misalignment  is  responsible  for  as  more as  49%  of  all  costs  related  to  rotating machinery collapse. Precise aligning coupling can prevent a huge number of machinery collapses and reduce much of the unplanned downtime that results in a loss of production. Vibration analysis is the important tool for fault diagnosis in rotating machinery. In this paper, Vibration analysis using Fast Fourier Transform (FFT) spectrum is used to identify misalignment condition. From phase and magnitude, the fault type and position are commonly showed. Phase is of good importance and it is a strong tool that allows distinguishing which of many possible pump breakdowns dominate. The analysis of phase relations enables to diagnose the dominant cause of the breakdown before the corrective action is performed. Experimental results prove that FFT is an important solution for fault diagnosis and phase completes the explanation with how the pump vibrates. The FFT result confirmed that the vibration level became within acceptable condition after correcting misalignment deviation in Khayyam pump station. Overall vibration in Khayyam pump station level was decreased by 2.86 times in axial direction, 3.71times in vertical direction and 4.09 times in horizontal direction after applying alignment process. So, good alignment processing leads to increasing the operating life span of rotating machinery.

78-83
16

Title : Building a brain wave system for patient supports

Authors : Thanh Ha Nguyen, Thi Mai Thuong Duong, Toan Luu Van, Phuong Huy Nguyen

Click Here For Abstract

Download Certificate
Abstract :

This paper proposes a method of design a brainwave communication system that supports patient to engage more effectively in their daily life. The system recognizes some basic requests of patients such as eating, drinking, sleeping, using the toilet, turning on / off the lights, turning on / off the TV, from which directly controls the device and / or notify caregivers.

84-87