Atagündüz, Gürbüz
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Atagündüz, G.
Atagunduz, G.
Atagunduz, Gurbuz
Atagunduz, G
Atagündüz, G
Atagunduz, G.
Atagunduz, Gurbuz
Atagunduz, G
Atagündüz, G
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03.10. Department of Mechanical Engineering
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Former Staff
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Sustainable Development Goals
1NO POVERTY
0
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2ZERO HUNGER
0
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3GOOD HEALTH AND WELL-BEING
0
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4QUALITY EDUCATION
0
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5GENDER EQUALITY
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6CLEAN WATER AND SANITATION
5
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7AFFORDABLE AND CLEAN ENERGY
5
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8DECENT WORK AND ECONOMIC GROWTH
3
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9INDUSTRY, INNOVATION AND INFRASTRUCTURE
3
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10REDUCED INEQUALITIES
0
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11SUSTAINABLE CITIES AND COMMUNITIES
1
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12RESPONSIBLE CONSUMPTION AND PRODUCTION
3
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13CLIMATE ACTION
3
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14LIFE BELOW WATER
1
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15LIFE ON LAND
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16PEACE, JUSTICE AND STRONG INSTITUTIONS
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17PARTNERSHIPS FOR THE GOALS
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Documents
9
Citations
46
h-index
2
Documents
6
Citations
21
Scholarly Output
7
Articles
2
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4584/1732
Supervised MSc Theses
4
Supervised PhD Theses
0
WoS Citation Count
18
Scopus Citation Count
21
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0
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0
WoS Citations per Publication
2.57
Scopus Citations per Publication
3.00
Open Access Source
5
Supervised Theses
4
| Journal | Count |
|---|---|
| Desalination | 1 |
| IMPC 2006 - Proceedings of 23rd International Mineral Processing Congress | 1 |
| Strojarstvo | 1 |
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7 results
Scholarly Output Search Results
Now showing 1 - 7 of 7
Master Thesis Theoretical and Experimental Investigations on Solar Distillation İyte Gülbahçe Campus Area Seawater(Izmir Institute of Technology, 2003) Alkan, İlker Pınar; Atagündüz, GürbüzThe world demand for potable water is increasing steadily with growing population. Water desalination using solar energy is suitable for potable water production from brackish and seawater.In this study, a solar distillation in a single basin is studied theoretically and experimentally in İzmir Institute of Technology Gülbahçe Campus area. The still was constructed using a 2100 mm x 700 mm base area, and the glass cover of still inclined at 38 0. Temperatures of glass cover, seawater inside the still, seawater interface, inside moist and ambient air and humidity was recorded continuously and distilled water was measured for each hour.Afterwards, to obtain extra solar energy, the aluminum reflector (2100 mm x 500 mm) was assembled to the still and effect of the reflector on the still productivity was examined.And also in this study, theoretical study was examined to describe the energy balances for the glass cover, seawater interface, black plate at the bottom and overall still and also to find still productivity.Master Thesis Experiment Station To Observe the Solar Charge Station Behaviour for a Year Period(Izmir Institute of Technology, 2003) Tatar, Farah; Atagündüz, GürbüzThe main purpose of this project is to set-up an experiment station, which will investigate the behavior of a portable "Solar Charge Station" that charges electric or hybrid vehicles, which work at the city centers.The solar charge station is constructed on Classrooms Building in Engineering Faculty of Izmir Institute of Technology. Sixteen monocrystalline silicon photovoltaic modules having the dimensions of 1.293mx 0.329mx 0.034m and 55W power rating are used as the photovoltaic generator of the solar charge station. Modules are mounted as if they create an .Omega Shape. which gives its name to the station (Omega Type Solar Charge Station). Vertical and tilted reflectors are used to enhance the electricity generation. Generated electricity is used to charge a lead acid battery, which is protected by five solar charge regulators in order to prevent discharging and overcharging. 50 W halogen lamps working with direct current are chosen as the loads. The system is analyzed both theoretically and experimentally. Theoretical results have shown that Omega Type Solar Charge Station generates more or less steady electricity, approximately 240 MJ through a year period. The reflectors operate better in winter than in summer, theoretically. According to the stations shape, it uses less space on rooftops. Experiments have shown that efficiency of the charge station during summer is considerably high. The efficiencies calculated by using direct solar radiation on inclined surface is 31.65315%, for the experiment on 21.08.2003, 27.90379% for the experiment carried out without reflectors on 11.09.2003 and 35.70939% for the experiment carried out with optimum inclination angles for September, on 12.09.2003.Omega shape of the station and the reflectors increase the efficiency more or less 3% in Omega shape of the station and the reflectors increase the efficiency more or less 3% in cost of the station if the energy gain is considered.Master Thesis Evaluations of Porous Burner Characteristic Diagrams and Process Water Production Possibilities(Izmir Institute of Technology, 2002) Bacaksız, Fatih; Atagündüz, GürbüzIn recent years, there has been a trend to new developments in gas and oil burners, which have been dominated by the aim of reducing pollutant emissions, reducing burner size and increasing the power modulation range. Several methods have been proposed in order to obtain more efficient combustion systems with low pollutant emissions. Over the past few years, a great deal of investigation on combustion in porous medium has been performed. In its efforts to optimize combustion processes, the Institute of Fluid Dynamics in Friedrich-Alexander University, Erlangen (LSTM-Nürnberg/Germany) has succeeded in developing the technology of combustion in porous media and this burner was used in this study. This thesis was focused on the evaluation of the porous burner characteristic diagrams and determined the possibility of the process water production. The experimental works were consisted of two main parts. One of them was carried out at the Institute of Fluid Dynamics in Erlangen. The second was performed at Izmir Institute of Technology. The aim of the experimental work for 25 kW porous burner was to analyse temperature distribution of exhaust gases close to the outer surface of ceramic matrix as well as pollutant emissions as a function of the burner surface. The aim of the second part was to investigate pollutant emissions as a function of the burner power and excess air ratio numbers, analyse the exhaust gases and cooling water temperature distribution with respect to burner power. Liquefied Petroleum Gas (%70 Butane + %30 Propane) was used as a fuel, which is utility gas in Turkey. It was concluded that the 25 kW burner allow very stable combustion with turn down ratio of around 6:1, and 4:1 for 10 kW burner, and excess air ratio numbers in the range 1.40 - 2.0. The exhaust gas temperature could easily reach 1100°C with a more and less uniform distribution over the 25 kW burner.s exit surface area. It was noticeable that the emission values lie lower than the values given by both German Norm 4702 and International Energy Agency, for 25 kW porous burner. CO an NOX emission values for 10 kW porous burner were quite lower than the emission limits for large new combustion facilities in Turkey. The burner showed that considerable amount of heat was transferred from exhaust gas to cooling water. Finally, porous burner can be used for process water production in various fields of energy engineering.Article Citation - WoS: 18Citation - Scopus: 21Theoretical and Experimental Investigations on Solar Distillation of Iztech Campus Area Seawater(Elsevier Ltd., 2007) Ayav, Pınar İlker; Atagündüz, GürbüzThe world demand for potable water is increasing steadily with growing population. Desalination using solar energy is suitable for potable water production from brackish and seawater. In this paper, we present a theoretical and experimental study of solar distillation in a single basin constructed at İzmir Institute of Technology Urla Campus. The still has a base area of 2100 mm × 700 mm with a glass cover inclined at 38°. In order to obtain extra solar energy, an aluminium reflector (2100 mm × 500 mm) is also assembled to the still. We model the still and conduct its energy balance equations under minor assumptions. We take into account the temperatures of glass cover, seawater interface, moist air and bottom in theoretical calculations and measurements. The comparison of the theoretical and experimental results highlights the benefits of the proposed model of the still and the efficacy of its energy balance equations.Conference Object Underground Gasification in Western Black Sea Area and Thermodynamic Analysis(2006) Atagündüz, GürbüzAs known, western Black Sea carboniferous coal fields consist of two main fields: Zonguldak and Amasra. Previous research works have shown that Zonguldak area is not suitable for underground coal gasification. The joint studies done since 1994 by the Department of Geology and the Solar Energy Institute of Aegean University and, the Mineral Research and Exploration Institute of Ministry of Energy and Natural Sources have shown that the Amasra coal field is suitable with certain restrictions for the underground coal gasification. In the present work, the suitability of the Amasra - coal field for underground coal gasification will be discussed and the "Controlled Retraction of the Injection Point; CRIP"- Method which was successfully used and tested in the American field experiments will be described briefly. A brief thermodynamic analysis of the gasification process will be given which should help, as a tool, to the theoretical prediction of the underground coal gasification.Master Thesis Photovoltaic Charge Station on Garage Roofs With Passive Reflectors(Izmir Institute of Technology, 2000) Çantay, Aylin; Atagündüz, GürbüzThis study involves a photovoltaic charge station which could be placed on garage roofs in order to charge the battery of an electrical car. The aim of this thesis is to design an efficient photo voltaic charge station and construction of omega type solar charge station. That's why various models were designed and calculated amount of energy. A photovoltaic charge station has 16 photovoltaic modules with dimensions 1293 mm*329 mm*34 mm. In this study five different type of solar charge stations were compared. These are, omega type solar charge station ( first type ), south facing type solar charge station with different angles ( second type ), south facing type solar charge station with fixed angles ( third type ), inverse of omega type solar charge station ( fourth type ), optimisation of south facing type solar charge station with different angles ( fifth type ). After calculating of collected solar energy, the fifth type solar charge station was chosen as the most efficient solar charge station. After these theoretical calculations, omega type solar charge station has been installed on the Electrical Engineering Department's roof. Voltages and current intensitiesof omega type solar charge station were measured from 28 June 2000 to 15 October 2000 in order to determine the solar power obtained and to compare it with the calculated values and measured data by Solar Energy Institute of Aegean University and meteorological station in Glizelyah. The results obtained are satisfactory.Article Omega type solar charge station(Croation Union of Mech. Engineers and Naval Architects, 2002) Atagündüz, GürbüzAcid rains, greenhouse effect, smog and depletion of ozone layer arc some of the factors, which lead to the air pollution in big cities all over in the world. One of ways to reduce the air pollution in big cities is the introduction of electro or hybrid cars. The present work deals with a photovoltaic charge station, which could be installed on a garage roof with the dimensions about three meters by six meters in order to charge the battery of an electro car. The present work consists of two parts. First part deals with the theoretical design of the charge station, which has been started during a research stay of the author* in Germany. The second part is an experimental work, completed at Izmir Institute of Technology as a MS-Thesis. The present work bases on the original idea of the author, used in a previous work for the field of heliostats of the Solar Thermal Power Plant in the University Ege. The idea is to create a fix mirror area, which should acts as if it were a sun-tracking array. The theoretical design work and the results of the experiments have shown that the idea is applicable also to photovoltaic fields.