2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)最新文献_第4页

Thermal performance optimization of smooth flat plate solar air heater (SFPSAH) using simulated annealing: Evaluation and comparisons 基于模拟退火的光滑平板太阳能空气加热器热性能优化:评价与比较

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497748

S. Siddhartha, S. Chauhan, V. Varun, N. Sharma

{"title":"Thermal performance optimization of smooth flat plate solar air heater (SFPSAH) using simulated annealing: Evaluation and comparisons","authors":"S. Siddhartha, S. Chauhan, V. Varun, N. Sharma","doi":"10.1109/ICUEPES.2011.6497748","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497748","url":null,"abstract":"Nowadays, the interest of researcher growing in the field of optimization of solar systems in order to improve the thermal performance by reducing friction losses and increasing heat transfer rates either using optimization techniques or improving system design by introducing roughness elements. In case of solar air heater, the working fluid is air which reduces the probability of corrosion and also decreases the weight of collector and correspondingly reduces the cost. The thermal performance of solar air heater is low which can be increased by rising heat transfer rates which can be obtained by using high flow rates. In this work, simulated annealing algorithm has been implemented to optimize the thermal performance of flat plate solar air heater and predict the optimized set of design and operating parameters. The concept of simulated annealing based on the physical annealing process in statistical mechanics which governs first law of thermodynamics. The algorithm for the optimization is developed as well as simulation is carried out based upon the code developed in MATLAB. The design and operating parameters which affect the thermal performance are wind velocity, irradiance; tilt angle, mass flow rate, ambient temperature, emissivity of plate and number of glass cover plates. In this work the optimized set of these parameters are obtained and the optimized thermal performance is evaluated. The results obtained show that the maximum thermal performance is 72.48 % for three number of glass plate at an irradiance of 600 W/m2. The final results obtained from this technique are compared with other optimization techniques like PSO, GA and found to be satisfactory. These results are also compared with the experimental results.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114485362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A new method for balancing a three-phase induction motor supplied by a single-phase source 一种平衡单相电源供电三相感应电动机的新方法

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497758

Yaw-Juen Wang, H. Zhou

引用次数: 2

Well-organized preconditioner for solving load flow problems by GMRES 组织良好的预调节器，可用于GMRES求解负荷流问题

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497715

C. Portugal, R. Prada, J. Pessanha

引用次数: 1

Effect of inclined ribs on heat transfer behavior in a square channel 斜肋对方形通道传热特性的影响

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497776

S. Skullong, P. Chaidilokpattanakul, P. Promvonge

引用次数: 1

Influences of twisted-tape with parallel rectangular-wing on thermal performance of a heat exchanger 平行矩形翼扭曲带对换热器热工性能的影响

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497778

P. Eiamsa-ard, C. Thianpong, S. Eiamsa-ard

{"title":"Influences of twisted-tape with parallel rectangular-wing on thermal performance of a heat exchanger","authors":"P. Eiamsa-ard, C. Thianpong, S. Eiamsa-ard","doi":"10.1109/ICUEPES.2011.6497778","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497778","url":null,"abstract":"The present paper reports heat transfer enhancement and friction factor characteristics in the tubes inserted with rectangular-winged twisted-tapes (TT-RWs). The wing-depth ratio (d/W) was varied from 0.1 to 0.3 while the tape-twist ratio was kept constant at y/W = 4.0. The experiments were conducted under uniform heat flux condition for Reynolds number between 5500 and 20,200 (based on the inner diameter, D), using water as the working fluid. The tubes with typical twisted tape (TT) and twisted tape with alternate-axis (TA) as well as a plain tube were also tested for assessment. The obtained results demonstrate that the utilization of the tubes with TT-RWs leads to the increases of both Nusselt number and friction compared to those from the uses of the tubes with TT, TA and the plain tube. In addition, Nusselt number increases as a wing-depth ratio of the twisted tape increases. The improvement of Nusselt number is directly related to the superior destruction of the boundary layer which is responsible by the stronger swirl flow and turbulence intensity. According to the results, the TT-RW with d/W = 0.3 yields the highest Nusselt number which is around 100% higher than that of the plain tube, corresponding to the thermal performance factor of 1.36 at constant pumping power.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124459475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development of electrical behavioral model of an arbitrary solar cell to amend the PSPICE simulation performance 开发任意太阳能电池的电行为模型以修正PSPICE仿真性能

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497766

M. Rahman, A. A. Mansur, N. Mahmud, M. Islam, T. Jamal

引用次数: 3

Automation of interconnected power system using fuzzy controller 基于模糊控制器的互联电力系统自动化

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497762

E. B. M. Tayeb

引用次数: 6

Methodology for enhancing the assessment of opportunities in renewable Energy Resources with study case 加强可再生能源机会评估的方法与研究案例

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497730

B. D. da Silva, M. Udaeta, L. Galvao

{"title":"Methodology for enhancing the assessment of opportunities in renewable Energy Resources with study case","authors":"B. D. da Silva, M. Udaeta, L. Galvao","doi":"10.1109/ICUEPES.2011.6497730","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497730","url":null,"abstract":"The aim of this paper is the expeditious evaluation of business opportunities “attractiveness” in renewable Energy Resources - (ER) within a specific geographic area, and using concepts of Integrated Resource Planning Methodology (PIR is Portuguese Acronyms for IRP). The proposed methodology includes “a priori” assessment of ERs also in others dimensions, besides the technical-economical, quantifying and internalizing stakeholders' opinions, therefore offering a rich ground to risk assessments in advance. As a study case, the methodology is applied within the Northwest region of São Paulo State2, called Administrative Region of Araçatuba (Portuguese Acronyms RAA)3. The deliverables of the methodology include (i) the main Figures of Economic Merit (FEM) - (Net Present Value, Internal Return Rate and Discounted Payback), evaluated to each resource assessed; (ii) sensitivity analysis on cash flow of technical-economical inputs (parameters used to build the investment cash flow) and finally (iii) it makes recommendations of investments (investment grade or not) to each ER assessed. It is important to point out the ER locacional aspects (Brazil, São Paulo, and RAA) are considered, enriching the methodology. Five4 ERs were chosen to be evaluated, all of them renewable: On the energy supply side (generation): Small Hydro Plant (SHP), Wind Farms and Cogeneration using sugarcane biomass as fuel; and on the demand side (final uses/economy measures): replacement of incandescent light bulbs (energy spender) by compact fluorescent ones (energy saver) and replacement of electric showers (energy spender) by water central heating systems (energy saver), inside PIR Urban areas. The only assessed ER that has not received investment grade was Wind Farm.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125170140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determining market clearing price using graphical analysis - impact of loss as a case study 使用图形分析确定市场出清价格-损失影响作为案例研究

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497714

S. Karthikeyan, Sathish K. Kumar, Y. Janakinadh, V. V. Raviteja, I. Raglend, D. Kothari

{"title":"Determining market clearing price using graphical analysis - impact of loss as a case study","authors":"S. Karthikeyan, Sathish K. Kumar, Y. Janakinadh, V. V. Raviteja, I. Raglend, D. Kothari","doi":"10.1109/ICUEPES.2011.6497714","DOIUrl":"https://doi.org/10.1109/ICUEPES.2011.6497714","url":null,"abstract":"Market clearing price (MCP) has been the prime operating function for a pool operator in energy trading scenario. Its main objective is to maximize the social welfare function where the society i.e. both the generating companies and the consumers are benefited and unbiased. Many researchers take stepped bid functions of both the generators and consumers as inputs for determining MCP (λ). But owing to reason of having less information and less realistic, quadratic bidding functions are preferred and a closed form solution scheme with and without loss have been developed. Gradient technique has been used for finding the mcp when losses are considered. All the above solution has been interpreted using graphical approach. The proposed approach has been tested on a 30 bus system and a 3 unit system. From the results, a conceptual understanding has been made and how various market conditions have an impact on the MCP is discussed. The results obtained are quite encouraging and useful for the present context of deregulation and restructuring of electricity market. MATLAB 7.0 has been used to carry out the simulation.","PeriodicalId":262691,"journal":{"name":"2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127238566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Analysis of a partially shaded PV array considering different module connection schemes and effects of bypass diodes 考虑不同模块连接方案和旁路二极管影响的部分遮阳光伏阵列分析

2011 International Conference & Utility Exhibition on Power and Energy Systems: Issues and Prospects for Asia (ICUE) Pub Date : 2011-09-01 DOI: 10.1109/ICUEPES.2011.6497768

Yaw-Juen Wang, Shulin Lin

引用次数: 28