Yazar "Kale, Cihangir" seçeneğine göre listele
Listeleniyor 1 - 3 / 3
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe A techno-economic assessment of landfill gas emissions and energy recovery potential of different landfill areas in Turkey(Elsevier Sci Ltd, 2020) Kale, Cihangir; Gokcek, MuratLandfills are a widespread application for the management of municipal solid waste and the production of energy. However, landfill gas estimations, analysis of its energy capacity, and economic analyses need to be performed properly for a landfill project area. Although there are many gas prediction models in the literature, the default values in the model such as the methane production capacity (L-0) and the methane production rate (k) need to be recalculated according to the climate and waste composition of the region in order to obtain a more accurate gas estimation. Furthermore, the energy project from waste is expected to evaluate the through lifetime with variables (landfill operation, gas collection efficiency, different combustion engines, etc.) for an optimum plant capacity. In this study, it is aimed to investigate the landfill gas and methane production potential that can be obtained in landfill areas in different provinces of Turkey and to determine an optimum plant capacity by performing energy production cost analysis. To achieve this, the LandGEM 3.02 version was used to estimate long-term landfill gas potential in this study. The L-0 value was calculated by using the IPCC (Intergovernmental Panel on Climate Change) methodology, and the k value was determined by considering the meteorological data of the regions (precipitation amount, etc.). The future population of the selected regions was estimated using the arithmetic increase method. According to this estimation, the solid waste quantity to be generated in the future was calculated. Energy capacities of these areas were calculated using internal combustion reciprocating engines with six different capacities. The unit energy production cost was evaluated by employing the levelized cost method. The optimum plant capacity was found by evaluating the energy production costs obtained for each site and six different engines. As a result, it is observed that the energy production plant with the optimum capacity determined from waste is economically and ecologically feasible. (C) 2020 Elsevier Ltd. All rights reserved.Öğe Farklı ölçeklerdeki katı atık depolama sahalarında biyogaz ve enerji üretim potansiyelinin araştırılması(Niğde Ömer Halisdemir Üniversitesi / Fen Bilimleri Enstitüsü, 2017) Kale, Cihangir; Gökçek, MuratBu çalışmada, Türkiye'de farklı illerin katı atık depolama sahalarında oluşabilecek deponi gazı ve metan üretim potansiyelinin araştırılması, elde edilen deponi gazının enerji potansiyelinin belirlenmesi ve elektrik enerjisi üretim maliyelerinin hesaplanması amaçlanmıştır. Seçilen bölgeler için gelecek yıllara ait nüfus değişimi aritmetik artış metodu kullanılarak tahmin edilmiştir. Bu tahmin sonucuna göre gelecek yıllara ait oluşması beklenen evsel katı atık miktarı hesaplanmıştır. İllere ait katı atık kompozisyon bilgeleri ile IPCC (Intergovermental Panel on Climate Change) metodolojisi kullanılarak metan üretim potansiyeli belirlenmiş ve araştırılan bölgelerin meteorolojik verileri (yağış miktarı vb.) göz önünde bulundurularak metan üretim hızı ( ) hesaplanmıştır. Elde edilen veriler ile deponi gaz tahmin modeli olan LandGEM 3.02 modeli kullanılarak belirlenen sahalar için uzun vadeli deponi gaz (CO2, CH4, NMOC ) emisyon çıktıları elde edilmiştir. Farklı kapasitelerde içten yanmalı gaz motorları kullanılarak bu alanlar için elektrik enerjisi üretim potansiyeli hesaplanmıştır. Bir değere getirilmiş maliyet metodu kullanılarak birim enerji maliyeti hesaplanmıştır. . Aksaray, Balıkesir, Denizli, Erzurum, Eskişehir ve Kilis illeri için minimum elektrik enerjisi üretimi maliyetleri sırası ile 0,0695, 0,0539, 0,0539, 0,0582, 0,0539, 0,1043 $/kWs olarak hesaplanmıştır.Öğe Optimal sizing of off-grid hydrokinetic-based hybrid renewable power systems for a house load demand(Wiley-Hindawi, 2021) Gokcek, Murat; Kale, CihangirThe usage of stand-alone power systems represents an excellent choice for remote communities that are impossible to couple to the electricity distribution network practicably. The current research aims to design a no grid tied hybrid system on the basis of a PV-wind turbine-hydrokinetic turbine and diesel generator, for the purpose of meeting the electricity needs of a house near the Seyhan River, Turkey. A software that performs hybrid optimization of systems that can generate energy using different energy sources was utilized for modeling the operation of systems and identifying the appropriate architecture. In the current research, simulations were carried out for eight different (off-grid) power systems. The best optimized off-grid hybrid power system comprises a photovoltaic array of 7.87 kW, two wind turbines, one hydrokinetic turbine, a diesel generator of 7 kW, lead-acid batteries of 49 kWh, and a converter of 4.95 kW. The results of the present research demonstrated that the total net present cost was $161 327.08, while the levelized cost of electricity was $0.609/kWh for the optimized system. Furthermore, the renewable usage fraction and carbon dioxide emissions are 26.4% and 838.63 kg/year, respectively. In accordance with the simulation findings, the wind-hydrokinetic power system has higher levelized cost of electricity and total net present cost in comparison with other power generation systems.
