Iranian Journal of Energy and Environment最新文献_第5页

Thermal Performance and Heat Dynamics Energy and Exergy of Integrated Asphalt Collector Storage: Sources of Thermal Energy, and Thermoelectric Energy 综合沥青集热器储能的热性能和热动力学:热能和热电能的来源

Iranian Journal of Energy and Environment Pub Date : 2023-01-01 DOI: 10.5829/ijee.2023.14.01.03

M. Esmaeili Shayan, M. R. Hayati

引用次数: 0

Numerical Simulation of a Reactivity Controlled Compression Ignition Engine in order to Investigate the Effects of Adding Water to Low Reactivity Fuel 为研究低反应性燃料加水的影响，对反应性控制的压缩点火发动机进行了数值模拟

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.04.07

S. Talesh Amiri, R. Shafaghat, O. Jahanian, G. Sadripour

引用次数: 0

Provide a Modeling Algorithm for Mechanical Properties of Friction Stir Welding of 5 Series Aluminum and Pure-Copper Based on Fuzzy Logic 提出了一种基于模糊逻辑的5系铝与纯铜搅拌摩擦焊接力学性能建模算法

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.02.08

M. R. Maraki, H. Tagimalek, B. Pasoodeh

{"title":"Provide a Modeling Algorithm for Mechanical Properties of Friction Stir Welding of 5 Series Aluminum and Pure-Copper Based on Fuzzy Logic","authors":"M. R. Maraki, H. Tagimalek, B. Pasoodeh","doi":"10.5829/ijee.2022.13.02.08","DOIUrl":"https://doi.org/10.5829/ijee.2022.13.02.08","url":null,"abstract":"The copper/aluminum composite is very important and practical due to its light weight, optimal thermal and electrical conductivity. The high weight resistance ratio, along with its inherent properties, makes it attractive for new applications. In this regard, the use of composites with high mechanical properties has significantly increased. In this research, 5000 series aluminum and pure copper samples in 1st, 2nd, 3rd, and 4th passes have been subjected to friction stir welding (FSW) and then the mechanical and metallurgical properties of the welded samples have been compared with the original samples. In order to further study the results of tensile tests, metallography and microhardness tests have been performed. Microstructural evaluation of welded samples showed that the mixing zone of the samples was determined by combining aluminum and copper layers. The results showed an increase in yield strength in the welding zone and ultimately an improvement in hardness and ultimate strength in the weld zone compared to the prototype. Compared to stretched samples, the greater the distance from the nugget weld, the less the improvement in mechanical properties and microhardness. By changing the parameters and increasing the inlet temperature, the mixing and uniform dispersion of the particles is performed more appropriately and ultimately increases the tensile strength. Finally, in the research, experimental data were modeled using fuzzy logic method and considering that the presented model was obtained in two indices R-Sq (pred) and R-Sq (adj), 96 and 99%, respectively. The comparison between the experimental data and the model data indicated an acceptable error in the experimental data .","PeriodicalId":14542,"journal":{"name":"Iranian Journal of Energy and Environment","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79824032","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

Modeling the Performance of Amorphous Silicon in Different Typologies of Curved Building-integrated Photovoltaic Conditions 非晶硅在不同类型弯曲建筑集成光伏条件下的性能建模

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.01.10

M. Esmaeili Shayan, G. Najafi, B. Ghobadian, S. Gorjian

{"title":"Modeling the Performance of Amorphous Silicon in Different Typologies of Curved Building-integrated Photovoltaic Conditions","authors":"M. Esmaeili Shayan, G. Najafi, B. Ghobadian, S. Gorjian","doi":"10.5829/ijee.2022.13.01.10","DOIUrl":"https://doi.org/10.5829/ijee.2022.13.01.10","url":null,"abstract":"Photovoltaic cells are a significant renewable energy source due to their cheap cost and renewability. In both warm sunny and colder and cloudier conditions, a-Si modules outperform c-Si modules on a normalized energy basis. This study investigated 1 m 2 of amorphous photovoltaic silicon on curved surfaces. The Taguchi and response surface methods were utilized to expand the model in real terms. Results demonstrated the technology gap in the use of silicon crystal photovoltaics is eliminated. The maximum power in the Taguchi method test is 59.87 W, while the minimum power is 57.84 W when the system is deployed on a flat surface, and the maximum power in the RSM Test is 61.14 W when the system is deployed on a hemispherical surface, and the minimum power is 56.6 W when the system is deployed on a flat surface. The minimal performance was 7.1% on a level surface. The flat surface produced 810 kWh, the cylindrical surface 960 kWh, and the hemisphere 1000 kWh. The NPV at Flat surface is $697.52, with a 34.81%, IRR and an 8.58-year capital return period. Hemisphere and cylindrical surfaces both get $955.18. The investment yield was 39.29% for cylindrical constructions and 40.47% for hemispheres. On the flat surface, doubling fixed investment improved IRR by 21.3%. The cylindrical system increased by 25.59% and the hemisphere by 24.58%. The developed simulation model is empirically evaluated using a MATLAB computer tool; the key findings from the validation procedure are reported in this study.","PeriodicalId":14542,"journal":{"name":"Iranian Journal of Energy and Environment","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81679991","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

Prediction of CO and PM10 in Cold and Warm Seasons and Survey of the Effect of Instability Indices on Contaminants Using Artificial Neural Network: A Case Study in Tehran City 冷暖季节CO和PM10的人工神经网络预测及不稳定性指标对污染物的影响——以德黑兰市为例

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.01.08

R. Farhadi, M. Hadavifar, M. Moeinaddini, M. Amintoosi

{"title":"Prediction of CO and PM10 in Cold and Warm Seasons and Survey of the Effect of Instability Indices on Contaminants Using Artificial Neural Network: A Case Study in Tehran City","authors":"R. Farhadi, M. Hadavifar, M. Moeinaddini, M. Amintoosi","doi":"10.5829/ijee.2022.13.01.08","DOIUrl":"https://doi.org/10.5829/ijee.2022.13.01.08","url":null,"abstract":"Today, air pollution in urban areas is a major issue that have been affecting human health and the environment. Over the years artificial neural network methods has been used for prediction of pollutants concentration in many metropolitans. In the present study data were obtained from department of environment and air quality controlling stations in city of Tehran from March 2012 to October 2013. Prediction of CO and PM10 contaminations during cold and warm seasons under the influence of instability indices and meteorological parameters was done using the artificial neural network. Results of the modeling process showed that the highest correlation coefficient was obtained 0.84 for PM10 in warm season. On the contrary, the highest correlation coefficient of CO in cold season was 0.78. Also, the effect of instability indices on air pollution was investigated. The highest CO concentration occurred during cold seasons (R2= 0.81), while the lowest concentration was in warm season (R2= 0.72). In case of PM, the highest concentration occurred during warm seasons (R2= 0.84), while the lowest concentration was in cold season (R2=0.75). doi: 10.5829/ijee.2022.13.01.08","PeriodicalId":14542,"journal":{"name":"Iranian Journal of Energy and Environment","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88378814","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

Enhancement in Rejected Heat from Heat Sinks Using High Flexible Winglets with Large Deformation and Low Blockage Effect 利用大变形、低堵塞效应的高柔性小翼增强散热器的废热

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.01.02

S. A. Gandjalikhan Nassab

引用次数: 0

Experimental Evaluation of the Effect of Incident Wave Frequency on the Performance of a Dual-chamber Oscillating Water Columns Considering Resonance Phenomenon Occurrence 考虑共振现象的入射波频率对双腔振荡水柱性能影响的实验评价

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.02.01

R. Shafaghat, M. Fallahi, B. Alizadeh Kharkeshi, M. Yousefifard

{"title":"Experimental Evaluation of the Effect of Incident Wave Frequency on the Performance of a Dual-chamber Oscillating Water Columns Considering Resonance Phenomenon Occurrence","authors":"R. Shafaghat, M. Fallahi, B. Alizadeh Kharkeshi, M. Yousefifard","doi":"10.5829/ijee.2022.13.02.01","DOIUrl":"https://doi.org/10.5829/ijee.2022.13.02.01","url":null,"abstract":"This paper has experimentally investigated the performance of a dual-chamber oscillating water columns (OWC) imposed on Caspian Sea wave’s characteristics. Experimental runs were performed for three water draft depths of 10, 15, and 20 cm and eight wave frequencies ranging from 0.4 to 0.7 Hz. Also, if the converter consists of only one chamber, the power generated was 75W; however, by placing the second chamber serial behind the first chamber, the converter power increased to 116 watts (55% improvements). The results showed that if the frequency of the incident wave is not in the natural frequency range, the converter performs is better at the lowest water draft depth (10 cm). Whereas if the frequency of the incident wave is in the natural frequency range, the converter will have the best performance at the maximum water draft depth (20 cm). As the power generated at a water draft depth of 10 cm increased by 3.8% compared to a water draft depth of 20 cm. But within the natural frequency range and by resonance, the power produced at a depth of 20 cm is 27.3% more than the power generated at a depth of 10 cm.","PeriodicalId":14542,"journal":{"name":"Iranian Journal of Energy and Environment","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90338606","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: 7

Relationship between Air Temperature and Rainfall Variability of Selected Stations in Sub-Sahara Africa 撒哈拉以南非洲若干站点气温与降雨变率的关系

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.03.05

F. O. Aweda, T. K. Samson

{"title":"Relationship between Air Temperature and Rainfall Variability of Selected Stations in Sub-Sahara Africa","authors":"F. O. Aweda, T. K. Samson","doi":"10.5829/ijee.2022.13.03.05","DOIUrl":"https://doi.org/10.5829/ijee.2022.13.03.05","url":null,"abstract":"This current study was conducted on rainfall and air temperature data obtained from the archive of the HelioClim website to determine the relationship between the two parameters. The study aimed at the relationship between rainfall and air temperature. The data of thirty-four (34) years spanning from 1985 to 2019 was analyzed using Mann-Kendal statistics on the trend of the rainfall series while the normality of rainfall series was determined using Kolmogorov- Smirnov test across six southwest stations of Nigeria. The results revealed the highest mean rainfall in Akure (198.9 mm) while the least rainfall in Ado-Ekiti (163.4 mm). The maximum rainfall was in Abeokuta (865.8 mm) with Iwo having the highest disparity in rainfall (SD=148.8 mm) compared with other stations. The skewness in Abeokuta (Skewness = 0.9 mm) was higher compared with Ado-Ekiti, Akure, Ibadan, Ikeja and Iwo with skewness values of 0.7 mm, 0.4 mm, 0.7 mm, 0.6 mm and 0.7 mm, respectively. The maximum air temperature was recorded in Iwo (301.7 K) and the minimum air temperature in Ado-Ekiti (293.3 K). The skewness obtained in Akure (-0.2) and Ikeja (-0.3) was less than zero indicating that air temperature decreased more than it increased in these areas while in other stations, Abeokuta (0.01), Ado-Ekiti (0.22), Ibadan (0.02) and Iwo (0.24), the skewness was greater than zero meaning that air temperature increased more than it decreased in these stations.","PeriodicalId":14542,"journal":{"name":"Iranian Journal of Energy and Environment","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83496176","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

Production of Materials with High Thermal Insulation from Natural Fibers and Sericin 利用天然纤维和丝胶蛋白生产高绝热材料

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.03.11

M. Pakdel, B. Alemi

{"title":"Production of Materials with High Thermal Insulation from Natural Fibers and Sericin","authors":"M. Pakdel, B. Alemi","doi":"10.5829/ijee.2022.13.03.11","DOIUrl":"https://doi.org/10.5829/ijee.2022.13.03.11","url":null,"abstract":"Silkworm cocoon is a natural biological and composite structure that has evolved over time and has high physical and mechanical properties against stress and acts as insulation against ambient temperature conditions. Understanding the relationships between the two-component structure of silkworm cocoons (sericin and fibroin) inspires the creation of composite structures, including lightweight, high-strength nonwoven biocomposites. In the present study, by analyticaldescriptive method, we have tried to use cocoon sericin and introduce some famous and widely used natural fibers in materials science and study their characteristics because for various reasons such as lightness, lack of pollution and low cost, etc. can be suitable alternative for a replacement of synthetic fibers suggest the production of non-woven bio-composite materials. Natural fibers such as jute, hemp, flax, etc. with different volume percentages in combination with sericin as a binder, were proposed for this biocomposite and the thermal performance of each of them was compared using Maxwell's theoretical model. All compounds show low thermal conductivity and jute-sericin biocomposite with 70% by volume and 0.061 W/m2-K performance has better performance. doi: 10.5829/ijee.2022.13.03.11","PeriodicalId":14542,"journal":{"name":"Iranian Journal of Energy and Environment","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87443002","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

Strength Properties of Steel and Bamboo Reinforced Concrete Containing Quarry Dust, Rice Husk Ash and Guinea Corn Husk Ash 含采石场粉尘、稻壳灰和几内亚玉米壳灰的钢和竹增强混凝土的强度特性

Iranian Journal of Energy and Environment Pub Date : 2022-01-01 DOI: 10.5829/ijee.2022.13.04.05

S. Odeyemi, R. Abdulwahab, M. Akinpelu, R. Afolabi, O. Atoyebi

{"title":"Strength Properties of Steel and Bamboo Reinforced Concrete Containing Quarry Dust, Rice Husk Ash and Guinea Corn Husk Ash","authors":"S. Odeyemi, R. Abdulwahab, M. Akinpelu, R. Afolabi, O. Atoyebi","doi":"10.5829/ijee.2022.13.04.05","DOIUrl":"https://doi.org/10.5829/ijee.2022.13.04.05","url":null,"abstract":"The rising cost of concrete production due to the global recession in world economy caused by the COVID-19 pandemic and the greenhouse gases emitted in the production of cement has necessitated the need for alternative materials for cement. In this study, bamboo strips and steel rebars were used as reinforcements in a ternary blended concrete to determine their strength properties. In alignment with standard requirements for testing, concrete specimens were tested at curing ages of 7, 14 and 28 days for compressive, splitting tensile and flexural strengths. The morphological and bond characteristics of the bamboo were determined through the Scanning Electron Microscopy (SEM) and Fourier Transform Infra-Red Spectroscopy (FTIR), respectively; while its tensile strength was determined and compared with that of steel reinforcement. These results showed that bamboo is ductile and has stretching vibrational spectrum. The combinations of quarry dust, river sand, Rice Husk Ash (RHA) and Guinea Corn Husk Ash (GCHA) yielded compressive and split tensile strengths of 20.4 N/mm 2 and 2.18 N/mm 2 , respectively. Concrete with 50 % river sand and 50 % quarry dust performed better in flexure for both Bamboo Reinforced Concrete (BRC) and Steel Reinforced Concrete (SRC) at 28 days with strengths of 12.75 N/mm 2 and 22.49 N/mm 2 , respectively. Therefore, bamboo, quarry dust, rice husk and guinea corn husk ash can be used for reinforced concrete production.","PeriodicalId":14542,"journal":{"name":"Iranian Journal of Energy and Environment","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74203515","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