Browsing Mühendislik Fakültesi by Author "Mühendislik Fakültesi"
Now showing items 81-100 of 116
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Performance improvement potentials of low global warming potential refrigerants for intercity bus air conditioning system
Ünal, Şaban; Kutlu, Çağrı; Erdinç, M. Tahir (Serbian Society of Heat Transfer Engineers, 2018)In this study, theoretical investigation of two evaporator ejector refrigeration system was carried out based on energy and exergy analysis using R134a and low global warming potential refrigerants (namely R1234yf and ... -
Performance of counter flow membrane-based annular pipe liquid desiccant air conditioner
Cihan, Ertuğrul; Kavasoğulları, Barış; Demir, Hasan (PERGAMON-ELSEVIER SCIENCE LTD,, 2020)The present study comprises an experimental and numerical simulation of a counter flow membrane-based annular pipe liquid desiccant air conditioner (AP_LDAC) system. The experimental rig was constructed by using DuPont ... -
Positioning buildings on a zoning island to provide maximum shading: A case study
İnce, Hüseyin; Erdem, Nuri (SELCUK UNIV PRESS., 2019)Because summer days are long, and the weather is too hot, people desire shady spaces to escape the overwhelming effect of the sun. To keep buildings and open-air environments in the shade, a suitable building location ... -
Post-earthquake ignition vulnerability assessment of Kucukcekmece District
Yıldız, Selim Serhan; Karaman, H. (COPERNICUS GESELLSCHAFT MBH, 2013)In this study, a geographic information system (GIS)-based model was developed to calculate the post-earthquake ignition probability of a building, considering damage to the building's interior gas and electrical distribution ... -
Power optimization in partially shaded ohotovoltaic systems
Uçman, Mahmut; Kesilmiş, Zehan; Erol, Halil (UNIV NORTH., 2018)The Power-Voltage characteristic of a photovoltaic (PV) array exhibits non-linear behaviour when exposed to uniform solar irradiance. Maximum Power Point (MPP) tracking is challenging due to the varying climatic conditions ... -
Prediction Of Surface Hardness in a Burnishing Process Using Taguchi Methot, Fuzzy Logic Model and Regression Analysis
Başar, Gökhan; Kahraman, Funda (Yıldız Technical Univ, Yıldız Campus, Besiktas, Istanbul, 34349, TURKEY, 2018)The available work is aimed for comparison and estimation of surface hardness in ball burnishing process of aluminum alloy based upon the Taguchi technique, Fuzzy logic and regression models. The ball burnishing parameters ... -
Rapid transformation of heterocyclic building blocks into nanoporous carbons for high-performance supercapacitors
Ashourirad, Babak; Demir, Müslüm; Smith, Ryon A.; Gupta, Ram B.; El-Kaderi, Hani M. (Royal Society of Chemistry, 2018)The ever-increasing global energy consumption necessitates the development of efficient energy conversion and storage devices. Nitrogen-doped porous carbons as electrode materials for supercapacitors feature superior ... -
Rheological behavior of sumac (Rhus coriaria L.) extract as affected by temperature and concentration and investigation of flow behavior with CFD
Bozdoğan, Adnan; Yaşar, Kurban; Söyler, Mustafa; Özalp, Coşkun (BIOINTERFACE RESEARCH APPLIED CHEMISTRY,, 2020)The purpose of this study is to investigate the theological properties of sumac extract indifferent concentrations at different temperatures as well as its flow behavior in sudden expansion contraction and at 90 elbow with ... -
River flow estimation using artificial intelligence and fuzzy techniques
Üneş, Fatih; Demirci, Mustafa; Zelenakova, Martina; Çalışıcı, Mustafa; Tasar, Bestami; Vranay, Frantisek; Kaya, Yunus Ziya (MDPI., 2020)Accurate determination of river flows and variations is used for the efficient use of water resources, the planning of construction of water structures, and preventing flood disasters. However, accurate flow prediction is ... -
Shortcomings and Errors Encountered in Consultancy Services in Terms of Owners, Contractors and Consultants
Budak, Abdulkadir; Öcal, Mehmet Emin (2017)The construction sector, consulting services have been used in developed countries such as the United States and the United Kingdom since 1960. Nowadays, this understanding of service becomes more systematic and is performed ... -
Soğan dilimlerinin kurutulması esnasında renk değişimine etki eden faktörlerin yanıt yüzey yöntemi ile belirlenmesi
Demir, Hande; Sezer, Seda; Süfer, Özge (GIDA TEKNOLOJİSİ DERNEĞİ, 2017)Kurutulmuş soğan, gıda sanayiinde özellikle yemekçilik sektörü ile hazır çorba, soslar, salata ve marine edilmiş çeşitli gıdalarda kullanım potansiyeli olan bir gıda maddesidir. Bu nedenle kurutma koşullarını optimum ... -
Some physical and chemical properties of fruitbodies of cordyceps militaris collected in Turkey
Sufer, Özge; Bozok, Fuat; Taşkın, Hatıra; Büyükalaca, Saadet (KASTAMONU UNIV., 2019)Aim of study: Turkish Cordyceps militaris was collected in order to determine its certain quality characteristics such as color, texture, total phenolics level and antioxidant activity. Material and method: Samples (not ... -
Structural design and analysis of a servo crank press
Halıcıoğlu, Recep; Dülger, Lale Canan; Bozdana, Ali Tolga (ELSEVİER, 2016)Due to precision, flexibility, simplicity in construction, easy control, higher speed and lower energy consumptions, servo presses have recently become popular in metal forming applications. Servo press technology combines ... -
Supercapacitance and oxygen reduction characteristics of sulfur self-doped micro/mesoporous bio-carbon derived from lignin
Demir, Müslüm; Farghaly, Ahmed A.; Decuir, Matthew J.; Collinson, Maryanne M.; Gupta, Ram B. (ELSEVIER SCIENCE SA., 2018)The growing global concerns about the increased fossil fuel consumption and related environmental issues have motived scientists to find new, green and sustainable energy resources and technologies. In this work, byproduct ... -
Sıvı desikant nem alma sisteminin tasarımı ve performansının geliştirilmesi
Cihan, Ertuğrul; Kavasoğulları, Barış; Demir, Hasan (GAZİ ÜNİV., 2017)Bu çalışmada, mekanik nem alma sistemlerinin yerine kullanılabilecek bir sıvı desikant nem alma sisteminin tasarımı yapılarak termodinamik analizi yapılmıştır. Tasarlanan ve imalatı yapılan açık sıvı nem alma sisteminin ... -
Sıvı desikant nem alma sisteminin tasarımı ve performansının geliştirilmesi
Cihan, Ertuğrul; Kavasoğulları, Barış; Demir, Hasan (GAZİ ÜNİV., 2017)Bu çalışmada, mekanik nem alma sistemlerinin yerine kullanılabilecek bir sıvı desikant nem alma sisteminin tasarımı yapılarak termodinamik analizi yapılmıştır. Tasarlanan ve imalatı yapılan açık sıvı nem alma sisteminin ... -
The concept of owner representation and the problems stemming from the lack of ıts application
Budak, Abdulkadir; Öcal, M. Emin (2017)Although construction owners have numerous technical responsibilities in the process of planning a construction project and completing it on time along to the plan, the owners in our country, Turkey, have not developed a ... -
The effect of yeast strain, immobilisation, and ageing time on the amount of free amino cids and amino acids in peptides of sparkling wines obtained from cv. dimrit grapes
Bozdoğan, Adnan; Canbaş, A. (SOUTH AFRICAN SOC ENOLOGY & VITICULTURE-SASEV, DENNESIG, 2012)In this study, the influence of yeast strain, immobilisation, and ageing time with yeast were examined in relation to the amount of free amino acids and amino acids in the peptides of wines. Free and immobilised Saccharomyces ... -
The electrocatalytic properties of lithium copper composite in the oxygen reduction reaction
Farsak, Murat; Telli, Esra; Tezcan, Fatih; Akgül, Fatma Sevim; Ongun Yüce, Ayşe; Kardaş, Gülfeza (ELSEVİER, 2014)A new carbon supported lithium-copper cathode catalyst (gel@LiCu) is composed of activated carbon (@) supported gel, LiNO3 and CuCl2 mixture is investigated in the oxygen reduction reaction. The gel@LiCu cathode, which ... -
The Impacts of various ratios of different hydrocolloids and surfactants on quality characteristics of corn starch based gluten-free bread
Dizlek, Halef; Özer, M. S (SPRINGER HEIDELBERG, 2016)In this study, the effects of 18 different additive formulas constituted with xanthan and hydroxypropylmethylcellulose (HPMC) gums (hydrocolloids) were examined in the manufacture of corn starch based gluten-free bread. ...