International Journal of Energy for a Clean Environment最新文献_第7页

Design and Modeling of an 80 bar Oxy-Combustor for Direct Fired Supercritical CO2 Applications 直接燃烧超临界CO2的80 bar氧燃烧器的设计与建模

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2023045417

P. Strakey, T. Sidwell

引用次数: 0

Effects of additively manufactured surface roughness on small diameter plenums with multiple side discharges for high temperature gas turbine blade cooling applications 增材制造表面粗糙度对高温燃气轮机叶片多侧排气小直径整流的影响

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2023045420

M. Yip

引用次数: 0

On the Self-Starting Comparative Performance Evaluation of Darrieus and Hybrid Hydrokinetic Rotor Darrieus与混合式水动力转子自启动性能比较评价

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022044132

G. Saini, A. De

{"title":"On the Self-Starting Comparative Performance Evaluation of Darrieus and Hybrid Hydrokinetic Rotor","authors":"G. Saini, A. De","doi":"10.1615/interjenercleanenv.2022044132","DOIUrl":"https://doi.org/10.1615/interjenercleanenv.2022044132","url":null,"abstract":"Darrieus rotor is a promising technology for hydrokinetic and wind energy harvesting applications. However, the Darrieus rotor suffers from the problem of poor starting performance. The present research highlights solutions to improve the poor starting performance of the Darrieus rotor by introducing the hybrid rotor. Further, a comparative performance evaluation of conventional vertical axis Darrieus and hybrid rotors has been investigated numerically. The most widely used S-series S-1046 hydrofoil has been utilized by hybrid and Darrieus rotors. Further, two semicircular blades are used for the Savonius part of the hybrid rotor. The size of the Savonius part is optimized to obtain maximum performance from the hybrid rotor. Analyzing the flow field distributions across the turbine vicinity has highlighted various possible reasons. The study results have demonstrated that the hybrid rotor yields an exceptional increment of about 159.41% in the torque coefficient under low tip speed ratio (TSR) regimes (during initial starting) compared to the Darrieus rotor. However, due to the Savonius rotor's presence, the hybrid rotor's maximum power coefficient is reduced slightly compared to the maximum operating point of the Darrieus rotor. Further, the hybrid rotor yields a wider operating range than the single maximum operating point by the Darrieus rotor. The present investigations will assist the designers in selecting the site-specific hydrokinetic technology suitable for efficient and optimum use of hydrokinetic potential.","PeriodicalId":38729,"journal":{"name":"International Journal of Energy for a Clean Environment","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67393634","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

Extraction and characterization of biodiesel derived from the coffee husk, and its effect on diesel engine performance and emission characteristics 咖啡壳生物柴油的提取和表征及其对柴油机性能和排放特性的影响

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022043949

Addisu Emma, Sathyabhama Alangar, A. Yadav

引用次数: 0

Environmental engineering, innovations, and management. Editorial Review 环境工程，创新和管理。编辑审查

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022045186

Andrey Kuzmin, V. Pinchuk

引用次数: 1

Assessment of wind power at various height using Weibull parameters at four selected locations 在四个选定地点使用威布尔参数评估不同高度的风力

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022038082

Rahul Singh, Sanjeev Kumar, Bhusan Gautam

引用次数: 0

Energy Management in Buildings Using Phase Change Material 使用相变材料的建筑能源管理

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022040746

M. Hamdan, J. Al Asfar, Heba Al-Mashaqbeh

引用次数: 1

NUMERICAL SOLUTION FOR A CONVECTIVE-RADIATIVE STRAIGHT LONGITUDIAL FIN WITH VARIABLE THERMAL CHARACTERISTICS AND NONLINEAR BOUNDARY CONDITIONS 具有变热特性和非线性边界条件的对流辐射直纵翅的数值解

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022041661

Fahd Abdelmouiz Ziari, A. Benslama, Ferkous Khaled

引用次数: 0

Features of Combustion of Hydrogen and Its Mixtures with Methane (or Natural Gas) in Boilers and Furnaces 氢及其与甲烷(或天然气)混合物在锅炉和炉膛中的燃烧特性

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022044781

G. Marchenko, A. Smikhula

{"title":"Features of Combustion of Hydrogen and Its Mixtures with Methane (or Natural Gas) in Boilers and Furnaces","authors":"G. Marchenko, A. Smikhula","doi":"10.1615/interjenercleanenv.2022044781","DOIUrl":"https://doi.org/10.1615/interjenercleanenv.2022044781","url":null,"abstract":"In the work the possibility and principles of partial or complete replacement of natural gas as a fuel with hydrogen and its mixtures with methane (or natural gas) in new and existing boilers and furnaces with a capacity of approximately 0.3-60 MWare determined. The performed calculation showed the possibility of using one diffusion burner on natural gas, hydrogen, or their mixture in any proportion and the thermal power of the burner on methane (or natural gas) and hydrogen or their mixture at the same gas pressure is close. The use of condensing boilers is preferable due to the greater amount of thermal energy (as a percentage of heat output in firebox) that is obtained by condensing water vapor from flue gases when burning hydrogen compared to burning methane (or natural gas) is showed. Some constructions of burners and boilers for burning hydrogen and its mixtures with methane (or natural gas) are proposed. The difference in specific losses during hydrogen transportation by gas pipelines for methane (or natural gas) are determined; when pure hydrogen was supplied into gas pipelines for natural gas, its leakage per unit time (m3/s) will be near 2.8 times higher, but the amount of energy lost will be less by approximately 9.2%.","PeriodicalId":38729,"journal":{"name":"International Journal of Energy for a Clean Environment","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67394017","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

Assessment of Statistical and Kinetics based models for LOx-Methane Green Propellant Combustion 基于统计和动力学的液氧-甲烷绿色推进剂燃烧模型评价

International Journal of Energy for a Clean Environment Pub Date : 2022-01-01 DOI: 10.1615/interjenercleanenv.2022045212

Abhishek Sharma, A. De, Sunil Kumar

引用次数: 1