Bilir, Levent
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Dr.Öğr.Üyesi
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01.01.09.04. Enerji Sistemleri Mühendisliği Bölümü
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Sustainable Development Goals
1NO POVERTY
0
Research Products
2ZERO HUNGER
1
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3GOOD HEALTH AND WELL-BEING
0
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4QUALITY EDUCATION
0
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5GENDER EQUALITY
0
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6CLEAN WATER AND SANITATION
2
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7AFFORDABLE AND CLEAN ENERGY
14
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8DECENT WORK AND ECONOMIC GROWTH
4
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9INDUSTRY, INNOVATION AND INFRASTRUCTURE
6
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10REDUCED INEQUALITIES
0
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11SUSTAINABLE CITIES AND COMMUNITIES
4
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12RESPONSIBLE CONSUMPTION AND PRODUCTION
7
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13CLIMATE ACTION
1
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14LIFE BELOW WATER
2
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15LIFE ON LAND
2
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16PEACE, JUSTICE AND STRONG INSTITUTIONS
0
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17PARTNERSHIPS FOR THE GOALS
4
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Documents
23
Citations
356
h-index
10
Documents
20
Citations
694
Scholarly Output
38
Articles
32
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0/0
Supervised MSc Theses
0
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0
WoS Citation Count
522
Scopus Citation Count
705
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0
Projects
1
WoS Citations per Publication
13.74
Scopus Citations per Publication
18.55
Open Access Source
7
Supervised Theses
0
| Journal | Count |
|---|---|
| Maritime Policy & Management | 3 |
| Energy Conversion and Management | 2 |
| Applied Thermal Engineering | 2 |
| Case Studies on Transport Policy | 1 |
| Celal Bayar Üniversitesi Fen Bilimleri Dergisi | 1 |
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38 results
Scholarly Output Search Results
Now showing 1 - 10 of 38
Book Part EXPLORING THE FOOD TOURISM EXPERIENCES OF POP CULTURE-THEMED RESTAURANTS(Taylor and Francis, 2025) Burak Çetiner; Ateş Gül Ergun; Aylin Çalışkan; Nour Afiouni; Çetiner, Burak; Afiouni, Nour; Çalışkan, Aylin; Ergun, Ateş GülBased on the case study analysis students should be able to: obtain a better understanding of the processes behind designing and conceptualizing a theme restaurant, determine the crucial aspects that play a role in creation of an immersive dining experience, understand the role of social media utilization influencer partnerships and promoting through events in marketing of themed restaurants, discuss how to incorporate different various dietary options and the restaurant’s theme into the menu to offer an inclusive and immersive dining experience, and recognize the importance of adhering to legal regulations and cultural norms in restaurant marketing. © 2025 Elsevier B.V. All rights reserved.Article Citation - WoS: 36Citation - Scopus: 42Cooling channel effect on photovoltaic panel energy generation(PERGAMON-ELSEVIER SCIENCE LTD, 2021) Zeynep Ozcan; Miray Gulgun; Ecem Sen; Nezir Yagiz Cam; Levent Bilir; Gulgun, Miray; Sen, Ecem; Ozcan, Zeynep; Bilir, Levent; Cam, Nezir YagizIt is a well-known fact that even though the electricity generation is higher when the solar radiation is high on a photovoltaic panel its efficiency drops as its temperature increases. In this study it is intended to achieve cooling effect using an air duct placed under a photovoltaic panel thereby increase its efficiency. Hourly electricity generation PV efficiency and cell temperature values over a year are calculated using annual temperature and radiation data by using MATLAB and PV Sol software. Maximum cell temperature for the uncooled case is determined as 57.91 degrees C on July 21st at 1p.m. as a result of hourly calculations. The incident solar radiation is 976 W/m(2) when the panel reached its maximum temperature. The PV panel and cooling channel are modelled in ANSYS Fluent software and cooling effect was investigated for different air velocities and air-cooling channel geometries for the hour when maximum cell temperature is reached. Environmental analyses are also made. It is observed that with finned cooling channel it is possible to cool PV temperature more than with the flat cooling channel. Cooling the PV panel from its maximum cell temperature to 39.82 degrees C with 5 m/s air velocity and 82 fins cooling channel is achieved and new PV panel efficiency is recorded as 18.92 %. Environmentally considerations show that the use of solar energy provides the reduction of coal and natural gas-based CO2 emissions as 15 and 8 tons respectively.Conference Object Cut-Off Optimization in Liner Shipping: A Case Study(Springer Science and Business Media Deutschland GmbH, 2023) Ayca Bingul; Nazlican Gozacan; Aylin Çalışkan; Caliskan, Aylin; Bingul, Ayca; Chase, Nazlican; N.M. Durakbasa , M.G. GençyılmazThis study aims to optimize the cut-off dates in liner shipping to speed up the shipping process and allow customers to send their goods on time. This study contributes to the literature by assisting in determining the cut-off optimization in the liner shipping problem. Many explanatory variables have a positive effect resulting in the uncertainty of cut-off optimization in shipping. However there are apparent differences in cut-off dates across the shipping regions studied worldwide. The Arena Simulation Software was used to conduct this research. A flowchart was generated in line with the information provided by a liner operator to minimize all process times including the waiting time of the ship in port to estimate the best cut-off date for all processes. Then OptQuest an extension of the Arena software was used to optimize the simulation scenarios. © 2024 Elsevier B.V. All rights reserved.Article Citation - Scopus: 1Analysis and design of an air to air heat exchanger used in energy recovery systems(Erol Kurt, 2022) Helin Ülgen Elmacioǧlu; Irem Özsevgin; Cennet Kocabiyik; Nezir Yağız Çam; Levent Bilir; Elmacioǧlu, Helin Ülgen; Kocabiyik, Cennet; Özsevgin, Irem; Bilir, Levent; Čam, Nezir YaǧizWith the continuous worldwide energy use increase energy efficiency is gaining high importance. Consequently many methods have been investigated for potential energy savings. One of these methods is the use of heat recovery systems. These systems basically re-use waste heat and reduce energy consumption. Also they are increasingly used to reduce heating and cooling demands of buildings. Their main feature is to provide fresh air to the place which is heated by the exhaust air with the help of a heat exchanger (HEX) working between two different temperature sources. The most commonly used types of heat exchangers in ventilation systems are cross-flow and counter-flow heat exchangers. Cross-flow heat exchangers have a thermal efficiency in the range of 50-75% while counter-flow heat exchangers have 75-95%. Many studies have been carried out to increase the efficiency of this type of heat exchangers. In this study different designs of crossflow and counter-flow exchangers are compared using ANSYS Fluent software. The aim is to determine how the plate surface geometry affects heat transfer and pressure drop. It is aimed to find the optimum design with maximum efficiency high heat transfer and low pressure drop for heat exchangers. As a result it has been observed that thermal efficiency increased from 18% to 60% when changing from cross flow to counter flow in flat plate design while it increased from 25% to 77% in enhanced plate designs. For enhanced designs counter flow heat exchanger is 52% more efficient than cross flow heat exchanger. Also improvements to increase the surface area and turbulence in both flow types have increased heat transfer and thermal efficiency. © 2022 Elsevier B.V. All rights reserved.Article Citation - WoS: 2Citation - Scopus: 3THEORETICAL PERFORMANCE ASSESSMENT OF A PARABOLIC TROUGH HUMIDIFYING SOLAR COLLECTOR-BASED SOLAR STILL, PARABOLİK OLUKLU NEMLENDİRİCİ GÜNEŞ KOLLEKTÖRÜ BAZLI GÜNEŞ ENERJİLİ DESALİNASYON SİSTEMİNİN TEORİK PERFORMANS DEĞERLENDİRİLMESİ(Turk Isi Bilimi ve Teknigi Dernegi, 2024) Harris J.N. Welepe; Huseyin Gunerhan; Levent Bilir; Bilir, Levent; Günerhan, Hüseyin; Welepe, Harris J.N.In this paper a parabolic trough humidifying solar collector-based solar still (PHSC-SS) is proposed. Its purpose is to apply some important performance improvement techniques to the flat plate humidifying solar collector-based solar still (flat plate HSC-SS) to significantly improve overall system performance. These included the use of parabolic trough solar concentrators and the design of humidifying solar collectors from evacuated tube collectors. The results reveal that unlike flat plate HSC-SS which must operate with a turbulent airflow regime to achieve optimum overall performance PHSC-SS must operate with a laminar airflow regime and high inlet and outlet temperatures of air (at least 55 °C and less than 100 °C at atmospheric pressure) in the heat collector element. For 900 W/m2 of incident solar irradiance 2 m2 of solar collector area and 000042 kg/s of air flow rate the maximum energy efficiency exergy efficiency and daily freshwater productivity of PHSC-SS were found to be 6812% 1487% and 1697 kg/h respectively. Whereas for the same incident solar irradiance and solar collector area and 01 kg/s of air flow rate those of the flat plat HSC-SS were 729% 112% and between 107-2923 kg/h (for inlet and outlet temperatures of air less than 30 °C at atmospheric pressure) respectively. Although in some extreme cases freshwater productivity of flat plate HSC-SS can be higher than that of PHSC-SS it should be noted that laminar airflow regime confers great advantages to PHSC-SS. These are higher air temperatures at condenser inlet (which ease water condensation process) no need of an auxiliary cooling device (needed in the flat plate HSC-SS) less mechanical vibrations of system reduced condenser size and less energy consumed by air blowers. Furthermore the upper limit of the PHSC-SS is a PHSC-SS that operates without air flow but rather by vaporization of water droplets at boiling point from absorber followed by their suction to condenser similarly to a flash evaporation. © 2024 Elsevier B.V. All rights reserved.Book Part Citation - Scopus: 5Social media marketing in wine tourism(Taylor and Francis, 2022) Ige Pirnar; Aylin Çalışkan; Caliskan, Aylin; Pirnar, Ige[No abstract available]Conference Object Citation - Scopus: 2Parcel Delivery Service Quality Assessment(Springer Science and Business Media Deutschland GmbH, 2021) Belgin Aldatmaz; Candan Sever; Boran Pehriz; Aylin Çalışkan; Burak Çetiner; Çetiner, Burak; Sever, Candan; Pehriz, Boran; Çalışkan, Aylin; Aldatmaz, Belgin; N.M. Durakbasa , M.G. GençyılmazThe parcel delivery industry has been struggling both structurally and operationally with the increase in internet shopping the development of technology and changing consumer needs. In order to ensure the satisfaction of both commercial and individual customers and to gain profit by maintaining their competitive position companies operating in the parcel delivery industry have to evaluate the current status of their services and identify the areas that need improvement. In this study it is aimed to evaluate the current industry position by measuring service quality levels of each parcel delivery company operating in Turkey and determine the parcel service quality attributes that are needed to be improved. SERVQUAL method was used in order to evaluate the current service quality levels. After a KANO model was developed to identify the service quality attributes that are needed to be improved. © 2020 Elsevier B.V. All rights reserved.Article Citation - WoS: 18Citation - Scopus: 18Modeling and performance analysis of a hybrid system for a residential application(PERGAMON-ELSEVIER SCIENCE LTD, 2018) Levent Bilir; Nurdan Yildirim; Bilir, Levent; Yildirim, NurdanHybrid systems which use more than one renewable energy sources are quite advantageous because they can eliminate or at least vitiate the interrupted characteristics of the renewable sources. In the present study a hybrid system which consists of a small scale wind turbine and photovoltaic panels was focused on. The system supplies the required electricity demand for a detached house with a 117 m(2) area in five different locations (Izmir Madrid Budapest Paris and Helsinki) according to European climate zones. A detailed dynamic hourly electricity generation analysis for the two components of the hybrid system was performed. As a result the coverage ratio of the hybrid system electricity generation for the total electricity demand of the house simple payback time and energy payback time of the system were calculated for each city. The results revealed that yearly electrical energy demand of the house can be entirely met by the evaluated hybrid system for each city. Maximum yearly coverage ratio of 176.6% was observed for Izmir Turkey while minimum coverage ratio was 103.1% for Helsinki Finland. The simple payback time and energy payback time of the hybrid system were determined in the range of 7-25.5 years and 4.6-6.8 years respectively. (C) 2018 Elsevier Ltd. All rights reserved.Article Citation - WoS: 24Citation - Scopus: 30Photovoltaic system assessment for a school building(PERGAMON-ELSEVIER SCIENCE LTD, 2017) Levent Bilir; Nurdan Yildirim; Bilir, Levent; Yildirim, NurdanThe installation of photovoltaic panels (PVs) on the roof of residential and commercial buildings is getting widespread as these areas stand normally idle and can be used for another purpose without losing an inhabited space. Considering the solar potential of Turkey a significant amount of electricity generation is possible using current PV technology. For this reason a two-story detached school building located in Izmir Turkey was taken into consideration and monthly as well as annual coverage ratio of an on-grid PV system for its entire energy requirement (including heating cooling and lighting) was investigated. The PVs were installed on the south face of the school building roof. A heat pump with a typical coefficient of performance (COP) value of 2.5 was used for supplying required cooling and heating. The heating cooling and lighting loads were determined on a monthly basis. The average monthly electrical energy generation of the mounted PVs was calculated using a written code in Energy Equation Solver (EES) software. As a result the monthly as well as yearly electrical energy demand coverage ratio values for the school using the installed PVs were revealed. Since the school building has a large south faced roof the installation of PVs is very suitable to meet the cumulative electrical energy need of the heat pump and the lighting load. For Case 1 180 PVs which supply the entire yearly demand (with a 110% coverage ratio) were taken into consideration while for Case 2 265 PVs which cover 75% of the roof area were evaluated. The results showed that between November and March PV electrical energy generation is not sufficient to meet all energy need of the school for both cases. However significant coverage ratio values were observed for the rest of the year. In a yearly basis the PV generation exceeded the building demand by 62% for the Case 2. This conclusion points out that the school can meet its yearly electricity need with the considered PV system and can even have an additional financial profit by selling its surplus PV electricity to the grid. Economic and environmental payback time values as well as simple payback time value were also computed for both investigated cases. The results pointed out a simple payback time of 7.9 years for Case 1 and 7.6 years for Case 2. Energy payback time was determined as 5 years for both systems. The greenhouse gas payback time of 2.7 years and 5.9 years was encountered for coal based and natural gas based calculations. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Article Citation - WoS: 34Citation - Scopus: 36Seaports participation in enhancing the sustainable development goals(ELSEVIER SCI LTD, 2022) Aylin Caliskan; Caliskan, AylinThe Sustainable Development Goals (SDGs) agenda encourages and establishes initiatives that are important to society. In this sense it is vital and valuable to adapt these initiatives on a sectoral basis. Therefore this study aims to handle sustainability issues at ports within the United Nations Sustainable Development Goals (UNSDG) framework. Two targets were set. The first target is addressing the attention of European ports' sustainability disclosures to SDGs. The second target is to develop a comprehensive framework of port related sustainability initiatives to support the achievement of SDG targets. This paper is based upon a qualitative content analysis study. To consolidate the best practices European Ports were selected as the research area. First this study contributes to the extension of the UNSDG and Global Reporting Initiative (GRI) indicator framework with port specific aspects. Therefore it provides a comprehensive picture of port-related actions linked to each SDG goal. Secondly it provides evidence of how European ports are aligned with SDGs. The results revealed that the port industry has the potential to contribute mainly to SDGs 8 Decent Work and Economic Growth, 9 Industry Innovation and Infrastructure, 11 Sustainable Cities and Communities 12 Responsible Consumption and Pro-duction 13 Climate Action and 17 Partnership.
