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Synthesis and Thermal Characterization of Solar Salt-Based Phase Change Composites with Graphene Nanoplatelets

Journal of Thermal Science 2024年第2期33卷 491-500页

作者： Pethurajan VIGNESHWARAN Saboor SHAIK Sivan SURESH müslüm arici Asif AFZAL Department of Thermal and Energy Engineering School of Mechanical Engineering(SMEC)Vellore Institute of TechnologyVelloreTamil NaduIndia Nanotechnology Research Laboratory Department of Mechanical EngineeringNational Institute of TechnologyTiruchirappalliTamil NaduIndia mechanical Engineering Department Engineering FacultyKocaeli UniversityUmuttepe CampusKocaeli41001Turkey Department of mechanical Engineering P.A.College of Engineering(affiliated to Visvesvaraya Technological UniversityBelagavi)Mangaluru574153India

Thermal energy storage(TES) systems use solar energy despite its irregular availability and day-night temperature *** work reports the thermal characterizations of solar salt-based phase change composites in the presence of graphene nanoplatelets(GNP).Solar salt(60:40 of NaNO_(3):KNO_(3)) possessing phase transition temperature and melting enthalpy of 221.01℃ and 134.58 kJ/kg is proposed as a phase change material(PCm) for high-temperature solar-based energy storage *** conductivity must be improved to make them suitable for widespread applications and to close the gap between the system needs where they are *** is added at weight concentrations of 0.1%,0.3%,and 0.5% with solar salt using the ball milling method to boost its thermal *** studies indicated the formation of a uniform surface of GNP on solar *** spectrum peaks identified the physical interaction between salt and *** characterization of the composites,such as thermal conductivity,DSC and TGA was carried out for the samples earlier and later 300 thermal cycles.0.5% of GNP has improved the thermal conductivity of salt by 129.67% and after thermal cycling,the enhancement reduced to 125.21% indicating that thermal cycling has a minor impact on thermal *** change temperature decreased by around 2.32% in the presence of0.5% GNP and the latent heat reduced by 4.34% after thermal *** thermograms depicted the composites initiated the weight loss at around 550℃ after which it was *** thermal cycling,the weight loss initiated at ~40℃ lower compared to pure salt,which was found to be a minor *** characterization of solar salt and GNP-based solar salt composites revealed that the composites can be used for enhanced heat transfer in high-temperature solar-based heat transfer and energy storage applications.

关键词： thermal energy storage high temperature solar salt graphene nanoplatelets thermal characterization

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Preface:Energy and sustainable development

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Journal of Central South University 2023年第11期30卷 3517-3518页

作者： majid SIAVASHI müslüm arici School of mechanical Engineering Iran University of Science and TechnologyTehranIran Department of mechanical Engineering Kocaeli UniversityKocaeli41001Turkey

Energy demands are increasing continuously,and the development of sustainable technologies in energy systems is a critical and vital *** the required energy for social and economic needs in line with diminishing the environmental effects and pollution emissions is necessary to meet sustainable *** new energy systems with improved efficiency,securing the energy need,using clean and renewable energy sources,reducing energy losses and pollution,and expanding the availability and access to energy are the key elements of sustainable energy development.

关键词： pollution sustainable curing

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太阳能/地热联合有机朗肯循环电厂的能量和火用优化

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Journal of Central South University 2023年第11期30卷 3601-3616页

作者： Rafika mAALI Tahar KHIR müslüm arici University of Gabes National Engineering School of GabesResearch Laboratory of Applied ThermodynamicGabesLR18ES336029Tunisia mechanical Engineering Department Engineering FacultyKocaeli UniversityKocaeli 41001Turkey

对突尼斯南部一个太阳能和地热能驱动的有机朗肯循环(ORC)电厂进行了能量和火用分析。分别研究了在冬季和夏季2天内主要运行参数对太阳能/地热联合ORC系统的影响,确定了系统的质量、能量和火用平衡。结果表明,系统不可逆性的主要来源是... 详细信息

对突尼斯南部一个太阳能和地热能驱动的有机朗肯循环(ORC)电厂进行了能量和火用分析。分别研究了在冬季和夏季2天内主要运行参数对太阳能/地热联合ORC系统的影响,确定了系统的质量、能量和火用平衡。结果表明,系统不可逆性的主要来源是抛物面通流收集器。为了减少火用损耗,优化系统性能,采用多项式回归分析方法进行优化。由此建立了传热流体的质量流量和入口温度与太阳辐射的关系。该优化方案可使系统的火用效率在冬季提高2.06%~5.44%,在夏季提高1.00%~4.10%。此外,分析显示,在冬季,总能源效率和净功率分别提高了26.6%和21.0%。

关键词：火用效率太阳能地热能优化有机朗肯循环

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Thermal stress investigation of glazing unit filled with paraffin in cold regions

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Journal of Central South University 2021年第11期28卷 3599-3612页

作者： ZHOU Ying-ming WU Guo-zhong LI Dong müslüm arici WANG Ze-mei FU Shi-bo Çağatay YILDIZ AArmağan arici School of Architecture and Civil Engineering Northeast Petroleum UniversityDaqing 163318China College of Civil Engineering and Architecture Beibu Gulf UniversityQinzhou 535011China Department of mechanical Engineering Faculty of EngineeringKocaeli UniversityKocaeli 41001Turkey

In this study,based on the established heat transfer and mechanical stress models,thermal stress distribution of glazing unit filled with paraffin was studied for various temperature differences between indoor and outdoor *** strain produced on the surface of glazing unit filled with paraffin varies greatly in the outdoor temperature range of-30℃-40 ℃.Furthermore,phase change material(PCm) layer between the glass panes significantly affects the strain values at different temperatures,which can respectively reach up to about 250×10^(-6) and down to-300×10^(-6) for tensile and compressive strains once the paraffin is in liquid ***,impacts of boundary conditions on the strain values are more pronounced within the distance of 0.01 m from the edges of the glazing *** presented model and outcomes can be used as a guide to simulate thermal stress in glazing units filled with paraffin.

关键词： glazing unit paraffin thermal stress temperature difference stress distribution

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工业负荷可持续并网太阳能光伏的可行性评价

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Journal of Central South University 2023年第11期30卷 3575-3585页

作者： Kamlesh KUmAR Amir mahmood SOOmRO mahesh KUmAR Laveet KUmAR müslüm arici Department of Electrical Engineering Mehran University of Engineering and TechnologyJamshoro76062SindhPakistan Department of mechanical&Industrial Engineering College of EngineeringQatar UniversityDohaQatar mechanical Engineering Department Engineering FacultyKocaeli University41001 KocaeliTurkey

可再生能源发电因其间歇性而具有多变性,对发展中国家来说,可再生能源发电的成本很高。由于电价定价和机制设计不合理,上网电价和净计量等支持性政策和方案对消费者也没有太大吸引力。屋顶太阳能光伏系统自用技术可以避免这些方案的缺点... 详细信息

可再生能源发电因其间歇性而具有多变性,对发展中国家来说,可再生能源发电的成本很高。由于电价定价和机制设计不合理,上网电价和净计量等支持性政策和方案对消费者也没有太大吸引力。屋顶太阳能光伏系统自用技术可以避免这些方案的缺点,因为这种技术比公用电网的发电成本更低。因此,产消者可以以最低价格使用大部分电力,更具吸引力。本文分析了并网工业太阳能光伏发电系统的成本和可行性。结果发现,基于储能并网的光伏系统成本为0.0086$/(kW·h),公用电网将以0.062$/(kW·h)的价格出售给产消者,与使用时间评级模型相比,年能源成本将降低35.23%。此外,所提出的方案可满足96%的年能源需求,保证了供应的安全性,所提出的模型可用于其他发展中国家。

关键词：自用消费自给自足净计量进料关税网格存储光伏系统

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The effect of hardaliye on reducing the formation of malondialdehyde during in vitro gastrointestinal digestion of meat products

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Food Bioscience 2022年第3期47卷 1271-1280页

作者： Ayşe Semra Aksoy muhammet arici mustafa Yaman Department of Food Engineering Faculty of Chemical and Metallurgical EngineeringYildiz Technical UniversityIstanbul34220Turkey Department of Nutrition and Dietetics Faculty of Health SciencesIstanbul Sabahattin Zaim UniversityIstanbul34303Turkey

Hardaliye is a non-alcoholic beverage produced from red/black grapes by adding mustard seeds and lactic acid *** this study,it was aimed to determine the total phenolic content(TPC)and total antioxidant capacity(TAC)of hardaliye samples produced with three different grape varieties(Shiraz,merlot and Cabernet Sauvignon)before and after in vitro digestion,to determine their bioaccessibility,and to investigate their effects on reducing malondialdehyde(mDA)formation in meat *** decreased after in vitro digestion in all three hardaliye samples and their bioaccessibility values were 57.64%,41.54%,and 52.78%(for Shiraz,merlot,and Cabernet Sauvignon hardaliye,respectively).After in vitro digestion TAC value according to the DPPH method increased in all samples and according to the CUPRAC method decreased in merlot and Cabernet Sauvignon hardaliye samples,while it increased in the Shiraz *** in vitro digestion,mDA value increased in control meat samples and decreased in the samples treated with hardaliye *** treatment with other beverages was effective in reducing the post-digestion mDA value of some meat samples,the hardaliye samples were more effective in reducing this value and the lowest mDA bioaccessibility(%)values were determined in those treated with hardaliye *** samples with the lowest values were meat doner 1 treated with Shiraz hardaliye(10.27%);burger patties 2 treated with Shiraz hardaliye(22.40%);and meatball 2 treated with Cabernet Sauvignon hardaliye(7.12%).These findings indicate that hardaliye has potential beneficial health effects and can be used for the design of healthy eating patterns due to its lipid oxidation reducing potential in the gastrointestinal tract.

关键词： Hardaliye Antioxidant activity Bioactive property Bioaccessibility In vitro digestion Lipid peroxidation malondialdehyde Grape Oxidative stress Nutrition

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A Theory of the Risk for Empirical CVaR with Application to Portfolio Selection

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Journal of Systems Science & Complexity 2021年第5期34卷 1879-1894页

作者： arici Giorgio CAmPI marco C. CARE Algo DALAI marco RAmPONI Federico A. Department of Information Engineering University of Bresciavia Branze 3825123 BresciaItaly.

When decisions are based on empirical observations,a trade-off arises between flexibility of the decision and ability to generalize to new *** this paper,we focus on decisions that are obtained by the empirical minimization of the Conditional Value-at-Risk(CVa R)and argue that in CVa R the trade-off between flexibility and generalization can be understood on the ground of theoretical results under very general assumptions on the system that generates the *** results have implications on topics related to order and structure selection in various applications where the CVa R risk-measure is used.A study on a portfolio optimization problem with real data demonstrates our results.

关键词： Distribution-free results empirical CVa R generalization order selection risk scenario approach

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Effects of contrast media on the hepato-pancreato-biliary system

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World Journal of Gastroenterology 2009年第38期15卷 4788-4793页

作者： Omer Topcu Atilla Kurt Isilay Nadir Sema arici Ayhan Koyuncu Cengiz Aydin Department of General Surgery Faculty of MedicineCumhuriyet University Department of Gastroenterology Numune Hospital Department of Pathology Faculty of MedicineCumhuriyet University

AIm： To determine the effects of high osmolarity contrast media （HOCm） and iso-osmolar contrast media （Cm） application, with or without pressure, on hepato-pancreato-biliary （HPB） system. mETHODS： Sixty rats were divided into six equal groups as follows： Group i：（0.9% NaCl, control）, Group 2：（diatrizoate meglumine Na, ionic HOCm, Urographin）, Group 3：（iodixanol, iso-osmolar nonionic Cm, Visipaque）; each of which was applied without pressure, whereas the animals of the remaining three groups （1p, 2p, 3p） were subjected to the same Cm with pressure. We performed a duodenal puncture and introduced a catheter into the ampulla. After the catheterization, 0.2 mL Cm or 0.9% NaCI was injected with or without pressure. Blood samples were taken for biochemical evaluations. The histopathological examinations of liver, common bile duct, and pancreas were performed. RESULTS： There were no significant differences between the six groups for blood amylase, alanine aminotransferases, aspartate aminotransferases, bilirubin levels （P 〉 0.05）. Alkaline phosphatase and γ glutamyl transaminase levels were higher （P 〈 0.05） in the Urographin groups （2, 2p） than the Visipaque groups （3, 3p）, or control groups （1, 1p）. Hepatocyte necrosis, portal area inflammation, and Kupffer＇s cell hyperplasia were higher （P 〈 0.05） in the study groups than the control group. However, there were no significant differences （P 〉 0.05） between HOCm （2, 2p） and iso-osmolar Cm （3, 3p） groups. Bile duct proliferation and regeneration in the Urographin groups （2, 2p） were significantly higher （P 〈 0.05） than the Visipaque~ groups （3, 3p） or the control groups （1, lp）. Although Cm caused minor damage to the pancreas, there were no statistically significant differences （P 〉 0.05） between the groups. Application of the Cm with pressure did not cause additional damage to the HPB system. CONCLUSION： Iso-osmolar, non-ionic Cm could be more reliable than the ionic HOCm, whereas the application of pressure during the

关键词： Contrast media Liver Pancreas Biliarytract Pressure

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Comparison of the effects of first and second generation silicone hydrogel contact lens wear on tear film osmolarity

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International Journal of Ophthalmology(English edition) 2013年第5期6卷 666-670页

作者： Guzin Iskeleli Yunus Karakoc Ahmet Ozkok Ceyhun arici Omer Ozcan Osman Ipcioglu Department of Ophthalmology Cerrahpasa School of MedicineIstanbul University Department of Biophysics Inonu University Department of Biochemistry Gata Haydarpasa Training Hospital

AIm:To compare the effects of first and second generation silicone hydrogel(SiH) contact lens wear on tear film ***:The healthy subjects who have never used contact lenses before were enrolled in the *** film osmolarity values of 16 eyes(group 1) who wore first generation SiH contact lenses were compared with those of 18 eyes(group 2) who wore second generation SiH contact lenses after three months ***:Beforecontactlenswear,tearfilmosmolarity of groups 1 and 2 were 305.02±49.08 milliosmole(mOsm) and 284.66±30.18mOsm,*** three months of contact lens wear,osmolarity values were found 317.74±60.23mOsm in group 1 and 298.40±37.77mOsm in group *** osmolarity values for both groups of SiH contact lens wear after three months periods were slightly higher than before the contact lens wear,the difference was not statistically significant. CONCLUSION:Contact lens wear may cause evaporation from the tear film and can increase tear film osmolarity leading to symptoms of dry eye *** the current study,there is a tendency to increase tear film osmolarity for both groups of SiH contact lens wear,but the difference is not statistically significant.

关键词： dry eye silicone hydrogel contact lens contact lens related dry eye tear film osmolarity

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Effect of latanoprost/timolol and dorzolamide/tiomolol on intraocular pressure after phacoemulsification surgery

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International Journal of Ophthalmology(English edition) 2011年第2期4卷 190-194页

作者： Haydar Erdogan Ayse Vural Ozec Cengiz Caner mustafa Ilker Toker mustafa Kemal arici Aysen Topalkara Departments of Ophthalmology School of MedicineUniversity of Cumhuriyet

·AIm:To evalaute the effect of fixed-combination latanoprost 0.005%/timolol maleate 0.5% and dorzolamide hydrochloride 2%/timolol maleate 0.5% on postoperative intraocular pressure after phacoemulsification cataract surgery.·mETHODS:This study is a prospective,randomized,double-masked and *** study included 90 eyes of 90 patients which were scheduled to have phacoemulsification *** were randomly assigned preoperatively to 1 of 3 groups (30 eyes of 30 patients).Two hour before surgery,the patients received one drop latanoprost/timolol (group 1),dorzolamide/timolol (group 2) and placebo (group 3,control group).The IOPs were measured at preoperative and postoperative 4,8,and 24 hours.·RESULTS:The preoperative mean intraocular pressure was not statistically significant between both drug groups and control *** group 1 and 2,the postoperative mean IOP [group1:(14.03?à3.15)mmHg and group 2:(14.16?à4.43)mmHg] at 24 hours were significantly lower than the control group [(16.93?à3.70)mmHg,(P mean IOP of group 1 [(14.90±3.69)mmHg] at 8 hours was significantly lower than the control group [(17.70?à3.89)mmHg,(P mmHg] and control group at 8 hours (P >0.05).·CONCLUSION:When compared with placebo,the use of preoperative fixed combination of latanoprost/timolol and dorzolamide/timolol is an effective method for preventing intraocular pressure elevation in 24 hours after phacoemulsification surgery,but did not completely prevent IOP spikes.·

关键词： dorzolamide/timolol latanoprost/timolol intraocular pressure phacoemulsification cataract surgery

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