Browsing by Author "Ayanoglu, Abdulkadir"

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Citation - WoS: 78
Citation - Scopus: 92
Fuels properties, characterizations and engine and emission performance analyses of ternary waste cooking oil biodiesel-diesel-propanol blends
(SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS, 2019) Bencheikh, Kamel; Atabani, A. E; Shobana, Sutha; Mohammed, M. N.; Uguz, Gediz; Arpa, Orhan; Kumar, Gopalakrishnan; Ayanoglu, Abdulkadir; Bokhari, Awais
Application of biodiesel synthesized from waste-based raw materials with numerous solvents (higher chain alcohols) in diesel engines is a topic of great interest. This article examines the effect of biodiesel-diesel-propanol ternary blends. Physio-chemical properties, fatty acids composition (FAC), FT-IR, TGA, DSC, NMR along with some selected engine and emissions performance parameters were examined. Biodiesel was produced from waste cooking oil and exhibits excellent FAC that yields kinematic viscosity, cetane number, oxidation stability, higher heating value and iodine value of 3.93mm(2)/s, 58.88, 7.43 h, 39.45 MJ/kg and 64.92 g/100 g. Propanol blended biodiesel depicted an affirmative improvement in cold flow properties and decremented density. FT-IR and NMR results confirms the existence of biodiesel-diesel-propanol and prove their qualities as reliable methods. DSC and TGA results confirm that propanol reduces the onset and crystallization temperatures of the blends. Engine and emissions performance revealed that propanol addition further increased brake specific energy consumption (BSEC) and brake specific fuel consumption (BSFC) and reduced carbon monoxide (CO), exhaust gas temperature (EGT), nitrogen oxides (NOx) and smoke. This study proves the feasibility of the ternary blends with rewarding benefits in cold flow properties and densities besides acceptable engine and emissions performance results.
Elektrikli ve Konvansiyonel Otomobil Klimalarının Donanımsal Karşılaştırılması
(2025) Saka, Kenan; Ayanoglu, Abdulkadir
Sürücüler ve yolcular için konforlu bir yolculuk sağlayan otomobil klima sistemleri uzun süredir otomobillerin vazgeçilmez bir parçası durumuna gelmiştir. Elektrikli otomobil kullanımı ise içten yanmalı motorla çalışan araçlara bir alternatif olarak her geçen gün daha da artmaktadır. Elektrikli araçlarda kullanılan klima sistemi teorikte aynı buhar sıkıştırmalı mekanik soğutma çevrimi olmasına rağmen konvansiyonel taşıt klima sistemlerine göre donanımsal farklılıklara sahiptir. Bu çalışmada içten yanmalı motorla çalışan araçlara ait klima sistemleriyle elektrikli araçlara ait klima sistemlerinin tasarım karşılaştırmasına yer verilmiştir. Çalışmaya her iki tür araç klimalarından beklenilen soğutma görevinin karşılaştırılmasıyla başlanmıştır. Daha sonra bir klima sistemini oluşturan kompresör, evaporatör, kondenser ve kısılma vanası karşılaştırmasıyla devam edilmiştir. Sonuç olarak içten yanmalı otomobillerde bulunan klima sistemi sadece konfor şartlarının iyileştirilmesine katkıda bulunurken elektrikli araçlarda bulunan klima sistemi kabin içi soğutma görevinin yanında batarya ve motor soğutma görevini de yerine getirmektedir. İçten yanmalı otomobillerde ısı pompası uygulamasına gerek yokken elektrikli otomobil klimalarında ısı pompası uygulaması ticari olarak başlamıştır.
Photovoltaic Solar Power Plant of Soguksu: A Case Study
(2025) Saka, Kenan; Ayanoglu, Abdulkadir
Investments in photovoltaic solar power plants continue to increase across all provinces of Türkiye. However, Bursa is not among the regions that receive the highest levels of solar radiation compared to the eastern parts of the country. The Soğuksu power plant, located in the village of the same name in Bursa, was commissioned in March 2017 with an installed capacity of 7 MW. In this study, the actual generation data of the power plant for 2022 were analyzed, and the performance ratio (PR) and capacity factor (CF) were calculated. The results show that the minimum electricity generation occurred in December 2021 with 401.21 MWh, while the total electricity production in 2022 reached 10.64 GWh. During the summer season, the plant generated 7,262.8 MWh, corresponding to 68% of its annual production. The lowest performance ratio was observed in June at 75.1%, while the highest capacity factor was recorded in July at 28%. Furthermore, the performance ratios for November, December, and January exceeded 100%. Since the PR is calculated based on the solar energy values reported in the regional solar atlas, such results indicate a notable discrepancy between the published data and the actual site conditions. The exceptionally high PR values during the winter months may suggest that the region experiences milder winters and receives higher solar radiation than the atlas values imply.