Black sea journal of engineering and science最新文献_第2页

Hanönü (Kastamonu) Güneş Enerjisi Santralinin Farklı Simülasyon Programları ile Tasarımı ve Elektrik Enerjisi Üretim Sonuçlarının Değerlendirilmesi 采用不同模拟程序设计哈诺努（卡斯塔莫努）太阳能发电站并评估电能生产结果

Black sea journal of engineering and science Pub Date : 2024-05-03 DOI: 10.34248/bsengineering.1460518

Sefa Kirnapci, N. Pamuk

{"title":"Hanönü (Kastamonu) Güneş Enerjisi Santralinin Farklı Simülasyon Programları ile Tasarımı ve Elektrik Enerjisi Üretim Sonuçlarının Değerlendirilmesi","authors":"Sefa Kirnapci, N. Pamuk","doi":"10.34248/bsengineering.1460518","DOIUrl":"https://doi.org/10.34248/bsengineering.1460518","url":null,"abstract":"Elektrik üretimi için kullanılan fosil yakıtların çevreye olan olumsuz etkilerinden dolayı son dönemlerde yenilenebilir enerji kaynaklarının kullanımında hızla artış yaşanmaktadır. 2015 yılında Paris’te düzenlenen BM İklim Değişikliği Zirvesi’nde alınan en önemli kararlardan biri olarak küresel ısınmanın 2℃’nin altında tutulmasına yönelik bir eylem planının uygulanması konusu görüşülmüş olup bu konuda ülkeler arasında mutabakata varılmıştır. Bu bağlamda dünya genelinde yenilenebilir enerji üretiminde kapsamlı çalışmalar yapılmaktadır. Ülkemizde Enerji ve Tabii Kaynaklar Bakanlığı tarafından yürütülen çalışmalar neticesinde 2011 yılında Enerji Piyasası Düzenleme Kurulu (EPDK) tarafından yayımlanan yönetmelik ile küçük ölçekli üretim tesislerinin lisans alma ve şirket kurma yükümlülüğü ortadan kaldırılmıştır. Lisanssız elektrik üretim yönetmeliğinin uygulanmaya başlamasıyla birlikte ülkemizde güneş enerjisinden fotovoltaik sistemler ile elektrik üretimi hız kazanmıştır. Güneş enerjisi santrallerinin kurulumundan önceki tetkik ve fizibilite çalışmalarının yanı sıra simülasyon programlarından elde edilen detaylı analiz raporları sayesinde sağlıklı veriler elde edilebilmektedir. Fotovoltaik sistem simülasyonu üzerine PVsyst ve PV*SOL programları detaylı veri girişi olanağı sunması ve bu veriler üzerinden olumlu analizler yapabilmesi nedeniyle benzetim programları arasında ön plana çıkmaktadır. Bu çalışmada Hanönü (Kastamonu) Belediyesine ait 2021 yılında kurulumu yapılmış 276 kWp gücünde fotovoltaik güneş enerji santralinin PVsyst ve PV*SOL programları kullanılarak simülasyonları oluşturulmuş ve performans analizleri gerçekleştirilmiştir. Tesisin işletmeye alındığı tarihten itibaren ürettiği elektrik miktarı benzetim sonuçları ile karşılaştırılarak benzetim programlarının doğrulukları ve performansları değerlendirilmiştir.","PeriodicalId":495872,"journal":{"name":"Black sea journal of engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141129827","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

İvesi Kuzularında Büyüme Özellikleri için Pratik Bir Damızlık Seçme Yöntemi: Kolay İndeks Uyarlaması 阿瓦西羔羊生长性状的实用育种选育方法：简易指数适应性

Black sea journal of engineering and science Pub Date : 2024-04-19 DOI: 10.34248/bsengineering.1444385

Yusuf Kaplan, İrfan Güngör, Kürşat Alkoyak, Mustafa Tekerli

{"title":"İvesi Kuzularında Büyüme Özellikleri için Pratik Bir Damızlık Seçme Yöntemi: Kolay İndeks Uyarlaması","authors":"Yusuf Kaplan, İrfan Güngör, Kürşat Alkoyak, Mustafa Tekerli","doi":"10.34248/bsengineering.1444385","DOIUrl":"https://doi.org/10.34248/bsengineering.1444385","url":null,"abstract":"Hayvan ıslahının en önemli adımlardan biri de damızlık değeri en iyi hayvana üreme şansı verilmesidir. Aynı zamanda küçükbaş hayvancılıkta sürdürülebilirlik için büyüme, üreme ve süt verimi gibi ekonomik özellikler açısından daha verimli hayvanların seçilmesi gereklidir. Hayvanların verimlerine ilişkin damızlık değerlerini tahmin etmek için kullanılan yöntem ve modeller nispeten karmaşık yapıdadır. Çoğu kere yetiştiricilerin kendi başlarına uygulamaları güç olmaktadır. Bu nedenle iyi hayvanların seçimi için basit modellere ve pratik uygulamalara gereksinim duyulmaktadır. Bu çalışmanın amacı, koyun yetiştiricilerinin en iyi kuzularını seçmeleri için pratik bir yöntemi tanıtmak ve bu şekilde kullanılacak damızlıkları belirlemektir. Bu hedefle İvesi kuzularına ait örnek bir veri seti ile “Damızlık Asistanı” adlı bilgisayar yazılımı kullanılmıştır. Veri seti 2016-2018 yılları arasında 49 sürü ve 12 410 baş kuzudan elde edilen doğum ağırlığı (DA), sütten kesim ağırlığı (SKA) ve bu iki özellikten hesaplanan günlük canlı ağırlık artışlarından (GCAA) oluşmaktadır. Damızlık Asistanı ile İvesi kuzularının büyüme özelliklerine önemli çevresel faktörlerin etkisi giderilmiş ve daha sonra kolay indeks yöntemi kullanılarak düzeltilmiş verilerle değerli hayvanlar tespit edilmiştir.","PeriodicalId":495872,"journal":{"name":"Black sea journal of engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140684002","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

Sustainable Airport Management and Airline Marketing in the Aviation Sector 航空业的可持续机场管理和航空公司营销

Black sea journal of engineering and science Pub Date : 2024-04-19 DOI: 10.34248/bsengineering.1456212

Sevgi Aydın

引用次数: 0

Modeling Climate Change Scenarios for Spring Barley in Southeast of Almaty in Kazakhstan Using the LINTUL Approach 利用 LINTUL 方法模拟哈萨克斯坦阿拉木图东南部春大麦的气候变化情景

Black sea journal of engineering and science Pub Date : 2024-04-16 DOI: 10.34248/bsengineering.1445076

Aidana Sabitova, Gulnur Suleımanova, T. Kızıldeniz, A. Yetik

{"title":"Modeling Climate Change Scenarios for Spring Barley in Southeast of Almaty in Kazakhstan Using the LINTUL Approach","authors":"Aidana Sabitova, Gulnur Suleımanova, T. Kızıldeniz, A. Yetik","doi":"10.34248/bsengineering.1445076","DOIUrl":"https://doi.org/10.34248/bsengineering.1445076","url":null,"abstract":"Barley stands as a cornerstone in agricultural landscape of Kazakhstan, weaving through diverse climate zones, and annually gracing over 1.5 million hectares. The intricate interplay between climate and food systems necessitates thorough analysis and strategic measures to food safety and nutritional security, as the evolving climate significantly influences both the quantity and quality of our food resources. This study aims to employ the LINTUL-MULTICROP Model to assess how spring barley adapts to both today’s climatic conditions and potential climate change scenarios to elevated levels of carbon dioxide and temperature under the specific conditions of southeast of Almaty. Three different global climate change models were studied (GCMs); i) GFDL-ESM2M, ii) HadGEM2-AO, and iii) MPI-ESM-MR for historical period (1986-2005) under RCP 4.5 and RCP 8.5 during the periods of i) 2040-2059 years scenarios, ii) 2060-2079 years scenarios, and iii) 2080-2099 years scenarios. Overall, the HADGEMAO and MPIESMMR models exhibited promising results in simulating yield, projecting an increase in spring barley yield for both RCP4.5 and RCP8.5 scenarios in GFDL-ESM2M model case also demonstrated stable increase in rainfed conditions. In conclusion, it should be noted that in the conditions of Kazakhstan, the cultivation of spring barley tends to change to growth in the southeast of Almaty.","PeriodicalId":495872,"journal":{"name":"Black sea journal of engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140698199","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

A Game-Theoretical Integrated Approach for Sustainable Portfolio Selection: An Application on BIST Participation Sustainability Index Stocks 可持续投资组合选择的博弈论综合方法：在 BIST 参与可持续发展指数股票中的应用

Black sea journal of engineering and science Pub Date : 2024-04-07 DOI: 10.34248/bsengineering.1403554

Furkan Göktaş

引用次数: 0

Usage of Weka Software Based on Machine Learning Algorithms for Prediction of Liver Fibrosis/Cirrhosis 基于机器学习算法的 Weka 软件在肝纤维化/肝硬化预测中的应用

Black sea journal of engineering and science Pub Date : 2024-04-02 DOI: 10.34248/bsengineering.1351863

Rukiye Uzun Arslan, Ziynet Pamuk, Ceren Kaya

引用次数: 0

Effects of Geometric Parameters of Perforated Diffuser on Sound Pressure Level Sourced By Airflow 穿孔扩散器几何参数对气流声压级的影响

Black sea journal of engineering and science Pub Date : 2024-02-19 DOI: 10.34248/bsengineering.1421571

Ahmet Erdoğan, İ. G. Aksoy, S. Canbazoğlu

{"title":"Effects of Geometric Parameters of Perforated Diffuser on Sound Pressure Level Sourced By Airflow","authors":"Ahmet Erdoğan, İ. G. Aksoy, S. Canbazoğlu","doi":"10.34248/bsengineering.1421571","DOIUrl":"https://doi.org/10.34248/bsengineering.1421571","url":null,"abstract":"This study investigates the aeroacoustic behaviors of a square truncated perforated diffuser under airflow, commonly used in Air Handling Units (AHUs). The design parameters are fundamentally taken into account to unveil the aeroacoustic performance of the diffuser. Initially, unsteady-state Computational Fluid Dynamics (CFD) simulations are conducted based on models that accurately represent the fluid domain of the chamber with the perforated diffuser in the ANSYS Fluent environment. Subsequently, the Ffowcs Williams and Hawkings (FW-H) method integrated into the software is employed to acquire time-dependent signals from microphones placed in three different locations within a perforated diffuser chamber. Finally, by converting the results to a frequency range of 0-1000 Hz by Fast Fourier Transform (FFT) method and sound pressure level (SPL) values are obtained. Finally, the results are converted to a frequency range of 0-1000 Hz using the Fast Fourier Transform (FFT) method, and the SPL values are obtained. The results show that the microphone location is crucially important to determine SPL and the porosity reduction from 0.55 to 0.35 can reduce SPL by approximately 30-40 dB. Variations in wall thickness of the diffuser fluctuated between 5-10 dB at each frequency value.","PeriodicalId":495872,"journal":{"name":"Black sea journal of engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139958751","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

Utilizing VBA in MS Excel for Simplified Solutions in Chemical Engineering: Single-Effect Evaporator Study 利用 MS Excel 中的 VBA 简化化学工程解决方案：单效蒸发器研究

Black sea journal of engineering and science Pub Date : 2024-02-16 DOI: 10.34248/bsengineering.1402065

Muhammed Bora Akin

{"title":"Utilizing VBA in MS Excel for Simplified Solutions in Chemical Engineering: Single-Effect Evaporator Study","authors":"Muhammed Bora Akin","doi":"10.34248/bsengineering.1402065","DOIUrl":"https://doi.org/10.34248/bsengineering.1402065","url":null,"abstract":"An evaporator system's solutions involve solving equations that incorporate both mass and energy balances. The process of solving a single-effect evaporator is simpler compared to multi-effect evaporator systems. However, due to the extensive analysis of diverse data from various tables, many turn to simulation programs for convenience. These programs offer the advantage of conducting calculations by utilizing their own data libraries containing thermodynamic and LLE-VLE data. To emulate the functionality of expensive simulation programs, an alternative interface was designed using Visual Basic for Applications (VBA) in MS Excel. In this particular study, a single-effect evaporator system, utilized for concentrating NaOH solution, was chosen and solved with a VBA-created program within MS Excel. Moreover, databases for saturated water and superheated steam data were developed within the MS Excel environment to facilitate the program. Ultimately, the program was employed to scrutinize the influence of selected parameters on other parameters, and the results were analyzed. This study serves as an illustration of how VBA in MS Excel can efficiently handle calculations pertaining to chemical engineering processes. By focusing on the single-effect evaporator, it showcases how VBA in Excel can simplify and comprehensively investigate such calculations in chemical engineering processes.","PeriodicalId":495872,"journal":{"name":"Black sea journal of engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139960765","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

CFD Investigation of Pressure Drop Reduction in PEMFC Flow Channels with Distinct Cross-Section Shapes 具有不同截面形状的 PEMFC 流道压降的 CFD 研究

Black sea journal of engineering and science Pub Date : 2024-02-15 DOI: 10.34248/bsengineering.1420277

Mahmut Kaplan

{"title":"CFD Investigation of Pressure Drop Reduction in PEMFC Flow Channels with Distinct Cross-Section Shapes","authors":"Mahmut Kaplan","doi":"10.34248/bsengineering.1420277","DOIUrl":"https://doi.org/10.34248/bsengineering.1420277","url":null,"abstract":"Proton exchange membrane fuel cells (PEMFCs) have great potential to produce renewable, sustainable and clean energy and reduce air pollutants to mitigate climate change. PEMFCs consist of distinct parts including anode and cathode bipolar plates having flow channels, gas diffusion layers, catalyst layers, and membrane. The flow channel geometry influences the the flow and pressure drop characteristics of the channel and cell performance. In this work, a three-dimensional (3D) CFD model is built employing SOLIDWORKS and ANSYS Workbench. The innovative configurations are generated by changing the half of 2 x 2 mm square channel to 0.3 x 0.1 mm, 0.3 x 0.15 mm, 0.3 x 0.2 mm and 0.3 x 0.25 mm rectangular section at the top. The results showed that increasing rectangular section height significantly reduced pressure drop at the anode and cathode with a slight decrease in the current density at 0.4 and 0.6 V. The new configuration with 0.2 x 0.1 mm half square section at the bottom and 0.3 x 0.25 mm rectangular section decreases the current density, anode and cathode pressure drop of 11%, 69% and 58% , respectively in comparison to 0.2 x 0.2 flow channel at 0.4 V. Taking into account pressure loss along the flow channels, this configuration is a good option to improve the cell performance.","PeriodicalId":495872,"journal":{"name":"Black sea journal of engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836051","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

CFD Investigation of Pressure Drop Reduction in PEMFC Flow Channels with Distinct Cross-Section Shapes 具有不同截面形状的 PEMFC 流道压降的 CFD 研究

Black sea journal of engineering and science Pub Date : 2024-02-15 DOI: 10.34248/bsengineering.1420277

Mahmut Kaplan

{"title":"CFD Investigation of Pressure Drop Reduction in PEMFC Flow Channels with Distinct Cross-Section Shapes","authors":"Mahmut Kaplan","doi":"10.34248/bsengineering.1420277","DOIUrl":"https://doi.org/10.34248/bsengineering.1420277","url":null,"abstract":"Proton exchange membrane fuel cells (PEMFCs) have great potential to produce renewable, sustainable and clean energy and reduce air pollutants to mitigate climate change. PEMFCs consist of distinct parts including anode and cathode bipolar plates having flow channels, gas diffusion layers, catalyst layers, and membrane. The flow channel geometry influences the the flow and pressure drop characteristics of the channel and cell performance. In this work, a three-dimensional (3D) CFD model is built employing SOLIDWORKS and ANSYS Workbench. The innovative configurations are generated by changing the half of 2 x 2 mm square channel to 0.3 x 0.1 mm, 0.3 x 0.15 mm, 0.3 x 0.2 mm and 0.3 x 0.25 mm rectangular section at the top. The results showed that increasing rectangular section height significantly reduced pressure drop at the anode and cathode with a slight decrease in the current density at 0.4 and 0.6 V. The new configuration with 0.2 x 0.1 mm half square section at the bottom and 0.3 x 0.25 mm rectangular section decreases the current density, anode and cathode pressure drop of 11%, 69% and 58% , respectively in comparison to 0.2 x 0.2 flow channel at 0.4 V. Taking into account pressure loss along the flow channels, this configuration is a good option to improve the cell performance.","PeriodicalId":495872,"journal":{"name":"Black sea journal of engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139776387","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