IZTECH Research Centers Collection / İYTE Araştırma Merkezleri Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/11147/2636

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Now showing 1 - 5 of 5
  • Article
    Evaluation of Geothermal Energy Resources in Terms of Exergy Analysis
    (Zonguldak Bülent Ecevit Üniversitesi, 2018) Hancıoğlu Kuzgunkaya, Ebru
    Energy is recognized as a crucial element in a country development process. Geothermal resources are a green energy source that can make a considerable contribution in some countries. Also efficient use of resources is important due to availability, economic and environmental issues and comprises the essence of this work. The exergy analysis is a powerful tool for the design, analysis and classification of thermal systems. Using exergy for resource classification benefits their comparison, according to their ability to do work. Specific exergy index (SExI) was calculated to show for classification and capability of some geothermal area. Actual system data are used to assess the district heating system and power plant performance, energy and exergy efficiencies. In this study, specific exergy index for examined field was calculated between 0.026 and 0.947 and sustainability index (SI) was found between 1.250 and 2.782.
  • Book Part
    Exergetic and Exergoeconomic Aspects of Ground-Source (geothermal) Heat Pumps in Turkey
    (Taylor & Francis, 2014) Hepbaşlı, Arif; Hancıoğlu Kuzgunkaya, Ebru
    The demand for energy has recently increased rapidly as a result of the world’s population increase and industrial growth. On the contrary, fossil fuel supply is declining due to depletion of the resources. Moreover, utilization of fossil fuel energy resources has resulted in adverse effects on the global environment. In this regard, there is an urgent need to implement the use of sustainable and environmentally clean energy sources. In this context, renewable energy sources, including geothermal sources, can play a critical role in meeting the energy demands of societies.
  • Conference Object
    Dünya’da ve Türkiye’de Jeotermal Enerjinin Gelişiminde Araştırma Merkezlerinin Yeri
    (TMMOB Makina Mühendisleri Odası, 2011) Hancıoğlu Kuzgunkaya, Ebru; Gökçen, Gülden; Baba, Alper
    Jeotermal enerji alanında araştırma, geliştirme faaliyetleri ile mevcut jeotermal enerji uygulamalarının topluma tanıtılması çalışmalarını yürüten Jeotermal Araştırma Merkezleri ABD ve Avrupa’da 1970’li yıllardan bu yana çalışmalarını sürdürmektedir. Türkiye’de 1935 yılında Enstitü adıyla yerbilimleri alanında bilimsel araştırma ve uygulama yapmak üzere kurulan MTA, yerbilimleri alanında Türkiye’nin ilk ve en önemli araştırma kurumu olmuştur. Jeotermal enerji ile ilgili ilk çalışmalar MTA tarafından 1960’lı yıllarda başlatılmıştır. Yaklaşık 50 yıllık süreçte geliştirilen sahalar, çeşitli uygulamalar, yasal düzenlemelerle bugün jeotermal enerji kaynaklarına yoğun bir ilgi gösterilmektedir. Bu süreçte ülkemizde bazı üniversitelerin bünyesinde “Araştırma Merkezleri” oluşturulmaya başlanmış, fakat Amerika ve Avrupa’daki benzerlerine yakın performans gösterememişlerdir. Ülkemizde birçok kurum ve özel kuruluş bu Araştırma Merkezleri hakkında bilgi sahibi değildir ve karşılaştıkları sorunlarını çözmekte zorlanmaktadırlar. Bu çalışma kapsamında Dünyada ve Türkiye’de Jeotermal Araştırma Merkezlerinin özellikleri, bilimsel araştırmaları, kamu ve özel sektör ilişkileri, araştırmalara getirebilecekleri yenilikler ile ilgili bilgiler irdelenmiştir.
  • Article
    Citation - WoS: 3
    Citation - Scopus: 4
    Exergy analysis of food drying processes
    (Springer Verlag, 2010) Çolak, Neslihan; Balta, Mustafa T.; İçier, Filiz; Hancıoğlu, Ebru; Hepbaşlı, Arif; Erbay, Zafer
    It is well known that micro-level system parameters may have some great impact on macro-level energy aspects, the environment, and sustainability. Of course, if one wants to approach these thermodynamically, there are two ways: energy analysis through the first law of thermodynamics and exergy analysis through the second law of thermodynamics. Exergy analysis is an essential tool to expose the impacts of a power generating device on exergy-based sustainability; sustainability is necessary to overcome current ecological, economic, and developmental problems (Dincer and Rosen, 2005). In this regard, some new exergy-based sustainability parameters for a PEM fuel cell have been developed and studied parametrically to investigate how they will help measure the level of environmental impact and sustainable development (Midilli and Dincer, 2009). These types of parameters may also be applied to other energy-related systems.
  • Article
    Theoretical aspects of some 4-[2,6 derivatives as anti-hiv agents
    (Akademiai Kiado, 2000) Türker, Lemi; Sudağıdan, Mert
    Some (-)-(1S,4R) -4-[2-amino-6-(substituted)-9H-purin-9-yl]-2-cyclopentene-1-methanol derivatives have been considered for semiempirical treatment at the level of AM1 type calculations. Certain theoretical structure-activity relationship were investigated. © 2000 Akadémiai Kiadó,.