Energy Environment and Storage最新文献_第2页

Numerical and Optimization Study on a Heat Exchanger Tube Inserted with Ring by Taguchi Approach 用田口法对插环换热器管的数值与优化研究

Energy Environment and Storage Pub Date : 2023-01-26 DOI: 10.52924/oqgs5091

T. Dagdevir

{"title":"Numerical and Optimization Study on a Heat Exchanger Tube Inserted with Ring by Taguchi Approach","authors":"T. Dagdevir","doi":"10.52924/oqgs5091","DOIUrl":"https://doi.org/10.52924/oqgs5091","url":null,"abstract":"This paper presents an optimization study on a heat exchanger tube inserted with circular rings by using numerical analysis results. Pitch length (50, 100, and 200 mm), inner diameter (15, 12.5, and 10.0 mm), and thickness (1, 3, and 5 mm) of the rings are considered as factors to be optimized. Water is selected as working fluid and the tube is considered under constant heat flux of 20 kW/m2 and turbulent flow conditions. k-Epsilon simulate the turbulent flow through the tube. The L9 design of experiment model is used to reduce the number of numerical runs which is proposed by the Taguchi method. The optimization study is conducted as single and multi-objective optimization by using the Taguchi method and Grey relation analysis. Furthermore, the contribution effects of the considered parameters on the Nusselt number and the friction factor result are revealed by ANOVA. Numerical results showed that the Nusselt number and the friction factor increase as the pitch length, the diameter and the thickness decreases. It is found that the most effective parameter on both the Nusselt number and the friction factor is inner diameter of the rings. For the single objective optimization, the highest Nusselt number and the lowest friction factor is obtained with the tube configuration that are found as the pitch length of 50 mm, the diameter of 10 mm and the thickness of 5 mm and the pitch length of 200 mm, the diameter of 15 mm and the thickness of 3.0 mm, respectively. The pitch length of 50 mm, the diameter of 15.0 mm and the thickness of 5.0 mm presents the best thermal and hydraulic performance according to the multi-objective optimization study.","PeriodicalId":262431,"journal":{"name":"Energy Environment and Storage","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129805714","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

Climate Change and Animal Movement Integration in the Environmental Niche Model 环境生态位模型中气候变化与动物运动的整合

Energy Environment and Storage Pub Date : 2023-01-26 DOI: 10.52924/rhar2064

H. E. Kislioglu, I. Vera, Giacomo Di Lallo, Riki Hissink

{"title":"Climate Change and Animal Movement Integration in the Environmental Niche Model","authors":"H. E. Kislioglu, I. Vera, Giacomo Di Lallo, Riki Hissink","doi":"10.52924/rhar2064","DOIUrl":"https://doi.org/10.52924/rhar2064","url":null,"abstract":"Changing precipitation and temperature patterns due to climate change, shift ecological niches which pose a challenge for species. Furthermore, it is still unclear that if climate change faster than the speed of the species to move to more suitable environments. Climate Envelope models (GEMs) are used extensively in this matter to predict species geographical distribution. In this study, climate data and animal movement strategies integrated into the environmental niche model to analyze the successes of the species that have different movement strategies under the changing climate conditions. Four different movement strategies are formulized; lazy knowledge strategy (LKS), lazy no knowledge strategy (LNKS), proactive knowledge (PKS) and proactive no knowledge strategy (PNKS). In this study, mean annual temperature and annual precipitation data gathered for the RCP8.5 scenario from the HadGEM2-ES GCM model at a 10-minute resolution. Results show that the PKS has the highest survival rates which makes it the most successful strategy. Furthermore, the species with knowledge had performed higher survival rates than the species without knowledge due to their skill to find the most suitable cells around them. One-Way Anova test confirmed that there are significant differences between the strategies. Moreover, the analysis suggests that the species with knowledge of their environment have the most successful strategies for facing the climate change.","PeriodicalId":262431,"journal":{"name":"Energy Environment and Storage","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116014401","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

Investigation of the Performance Changes of the Savonius Wind Turbine Rotors with the Same Front View Area of Look by Change of the Aspect Ratio 改变长径比对相同前视面积下Savonius风机转子性能变化的研究

Energy Environment and Storage Pub Date : 2022-09-24 DOI: 10.52924/wfvi2347

M. Akkus, Zeki Haksever, Süleyman Osmanlı

引用次数: 0

Phase change materials for energy efficiency in building components – Overview 建筑构件能效用相变材料。概述

Energy Environment and Storage Pub Date : 2022-09-24 DOI: 10.52924/adsz4322

R. Agarwal, Pradeep K. Rawat, Devendra K. Rai, H. Athar, S. B

引用次数: 0

Testing of Ethylene Glycol Ketal, Dioxane and Cyclopentanone as Components of B10, B20 Fuel Blends 作为B10、B20燃料混合物组分的乙二醇缩醛、二氧环烷和环戊酮的测试

Energy Environment and Storage Pub Date : 2022-09-24 DOI: 10.52924/rbcy7188

I. Mamedov, G. Mamedova, N. Azimova

引用次数: 0

Hydroelectric Power Overview in 2021 of Turkey 土耳其2021年水电概览

Energy Environment and Storage Pub Date : 2022-09-24 DOI: 10.52924/dfhk5620

A. Bobat

{"title":"Hydroelectric Power Overview in 2021 of Turkey","authors":"A. Bobat","doi":"10.52924/dfhk5620","DOIUrl":"https://doi.org/10.52924/dfhk5620","url":null,"abstract":"Hydroelectric power together with other renewables already account for about 50% of electricity demand, and there is much additional potential for growth. Turkey’s electric power demand has been developing steadily, averaging 8-10 % annual growth over the past 20 years. Turkey is rapidly growing in terms of both its economy and its population. In parallel, its demand for energy, particularly for electricity, is increasing fast. Turkey’s hydraulic potential is 55,000 MW, and the share of hydraulic installed power has reached 31.647 MW from 11,175 MW in 2000 as of 31 December 2021. According to the Strategic Plan of the Ministry of Energy and Natural Resources for 2019-2023, while the total installed capacity will be about 32.9% in 2023, but this figure has already been reached. In cooperation with the public-private sector, 743 Hydroelectric Power Plants (public +private) with an installed capacity of 31.647 MW and a power generation potential of 108.932 GWh/year have been completed and put into service. Construction of those made by the public from these facilities is carried out by the DSI (State Hydraulic Works) and their operation is transferred to EUAS (Electricity Generation Corporation), while those made by the private sector, except for the EMRA license, other (water Use agreement, project, construction, water structures acceptance, etc.) operations are performed by DSI. From 743 facilities; 68 plants with an installed power of 13.766 MW with a power generation potential of 49 GWh/year by DSI; 675 plants with an installed power of 17.881 MW and a power generation potential of 60 GWh/year were built by the private sector and put into operation. This study aims to overview the status of hydropower in 2021 data of Turkey.","PeriodicalId":262431,"journal":{"name":"Energy Environment and Storage","volume":"60 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133545221","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

Carbon Black Production from Various Sources by Thermal Cracking Method 热裂解法从各种来源生产炭黑

Energy Environment and Storage Pub Date : 2022-09-24 DOI: 10.52924/nsvq3567

A. Pandey, S. B, Shishir Sinha, B. Prasad

{"title":"Carbon Black Production from Various Sources by Thermal Cracking Method","authors":"A. Pandey, S. B, Shishir Sinha, B. Prasad","doi":"10.52924/nsvq3567","DOIUrl":"https://doi.org/10.52924/nsvq3567","url":null,"abstract":"Petroleum-based feedstock (PBFS) and Coal tar-based feedstock (CTBFS) were used for the synthesis of carbon black (CB) via the thermal cracking method named as Petroleum-based feedstock carbon black (PBFS-CB) and Coal tar-based feedstock carbon black (CTBFS-CB) in a furnace reactor at a temperature of 1800 °C, for utilizing industrial waste products. The obtained distinguished carbon black samples are characterized for determining functional groups, morphology, and surface area using advanced instruments. Further, investigated the physical and mechanical properties of obtained different CB samples were mixed into the natural rubber. The small cluster morphology is observed in CBs. There are slight changes in spectra peaks and there no significant new peaks are observed. The same minerals were observed at the same theta values in the XRD pattern corresponding to PBFS-CB and CTBFS-CB. The tensile strength, modulus 300%, and abrasion loss of samples into rubber were determined as per international ASTM standards. The results revealed that there are negotiable values observed in both samples due to minimal changes observed in the surface area of the CB samples. These samples can be used for various applications viz rubber reinforcement, conductivity agent, coloring agent, and ultraviolet screening agent etc.","PeriodicalId":262431,"journal":{"name":"Energy Environment and Storage","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116192926","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