Hepbaşli, Arif
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Name Variants
Hepbasli Arif
Job Title
Prof.Dr.
Email Address
Main Affiliation
01.01.09.04. Enerji Sistemleri Mühendisliği Bölümü
Status
Current Staff
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ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Sustainable Development Goals
1NO POVERTY
0
Research Products
2ZERO HUNGER
2
Research Products
3GOOD HEALTH AND WELL-BEING
0
Research Products
4QUALITY EDUCATION
0
Research Products
5GENDER EQUALITY
0
Research Products
6CLEAN WATER AND SANITATION
8
Research Products
7AFFORDABLE AND CLEAN ENERGY
70
Research Products
8DECENT WORK AND ECONOMIC GROWTH
17
Research Products
9INDUSTRY, INNOVATION AND INFRASTRUCTURE
10
Research Products
10REDUCED INEQUALITIES
1
Research Products
11SUSTAINABLE CITIES AND COMMUNITIES
6
Research Products
12RESPONSIBLE CONSUMPTION AND PRODUCTION
9
Research Products
13CLIMATE ACTION
12
Research Products
14LIFE BELOW WATER
4
Research Products
15LIFE ON LAND
1
Research Products
16PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
17PARTNERSHIPS FOR THE GOALS
2
Research Products
Documents
402
Citations
20090
h-index
80
Documents
281
Citations
14338
No records found in other affiliations.
Scholarly Output
112
Articles
82
Views / Downloads
5/0
Supervised MSc Theses
0
Supervised PhD Theses
0
WoS Citation Count
2889
Scopus Citation Count
3357
Patents
0
Projects
0
WoS Citations per Publication
25.79
Scopus Citations per Publication
29.97
Open Access Source
21
Supervised Theses
0
| Journal | Count |
|---|---|
| Energy Conversion and Management | 11 |
| International Journal of Exergy | 9 |
| Energy and Buildings | 8 |
| International Journal of Hydrogen Energy | 6 |
| Applied Thermal Engineering | 5 |
Current Page: 1 / 11
Scopus Quartile Distribution
Competency Cloud
112 results
Scholarly Output Search Results
Now showing 1 - 10 of 112
Book Part Citation - Scopus: 1Heat Pumps(Elsevier Inc., 2018) A. Hepbasli; Hepbasli, ArifHeat pumps (HP) have been a well-known technology for many years and widely used for heating and cooling of residential buildings due to relatively higher energy utilization efficiencies. In this regard the structure of the chapter is as follows: some introductory information on HPs is given first. Next the historical development of the technology is described. The classification of HPs is then presented. After that energetic and exergetic relations used to analyze and assesses the performance of HPs are listed. Finally the present contribution concludes with some closing remarks highlighting the current and future aspects of HPs. © 2018 Elsevier B.V. All rights reserved.Book Part Energetic and Exergetic Performance Evaluation of Modified Two-Phase Ejector-Enhanced Cascade Refrigeration Cycles(Springer Science and Business Media Deutschland GmbH, 2026) Karacayli, Ibrahim; Hepbasli, Arif; Altay, LutfiyeArticle Citation - WoS: 75Citation - Scopus: 81Thermodynamic analyses and assessments of various thermal energy storage systems for buildings(Pergamon-Elsevier Science Ltd, 2012-10) Hakan Caliskan; I. Dincer; A. Hepbasli; Hepbasli, Arif; Dincer, Ibrahim; Caliskan, HakanIn this study energetic exergetic environmental and sustainability analyses and their assessments are carried out for latent thermochemical and sensible thermal energy storage (TES) systems for phase change material (PCM) supported building applications under varying environment (surrounding) temperatures. The present system consists of a floor heating system System-I System-II and System-III. The floor heating system stays at the building floor supported with a floor heating unit and pump. The System-I includes a latent TES system and a fan. The latent TES system is comprised of a PCM supported building envelope in which from outside to inside, glass transparent insulation material PCM air channel and insulation material are placed respectively. Furthermore System-II mainly has a solar-thermochemical TES while there are an aquifer TES and a heat pump in System-III. Among the TESs the hot and cold wells of the aquifer TES have maximum exergetic efficiency values of 88.782% and 69.607% at 8°C dead state temperature respectively. According to the energy efficiency aspects of TESs the discharging processes of the latent TES and the hot well of the aquifer TES possess the minimum and maximum values of 5.782% and 94.118% at 8°C dead state temperature respectively. Also the fan used with the latent TES is the most environmentally-benign system component among the devices. Furthermore the most sustainable TES is found for the aquifer TES while the worst sustainable system is the latent TES. © 2012 Elsevier Ltd. All rights reserved. © 2012 Elsevier B.V. All rights reserved.Article Citation - WoS: 16Citation - Scopus: 16Performance analysis of a solar-hydrogen driven multigeneration system(ELSEVIER, 2020-02) S. Erzen; E. Acikkalp; A. Hepbasli; Hepbasli, A.; Erzen, S.; Acikkalp, E.Environmental concerns have gained great attention in the last decades especially the global warming caused by usage of fossil fuels mostly. Renewable energy sources are the most reasonable way to decreasing the fossil fuel usage as a primary source and to preventing its environmental effects. In this regard renewable source multigeneration systems seem to be an alternative. In this paper a solar driven multigeneration system consisting of PV/T panels a hydrogen fueled diesel engine generator an electrolyzer a hydrogen compressor a hydrogen storage tank batteries an air cooled chiller a hydrogen combustor a water storage tank and a control systems is considered. The simulation of this system is performed through TRNSYS 18. Outputs from the proposed system are heating cooling electricity and hydrogen. The performance analysis is done for Izmir which is the third biggest city in Turkey by population while the obtained results are evaluated over a period of one year. (C) 2019 Published by Elsevier Ltd.Article Citation - WoS: 149Citation - Scopus: 169Heat transfer performance and exergy analyses of a corrugated plate heat exchanger using metal oxide nanofluids(Elsevier Ltd, 2014-01) M. A. Khairul; Mohammad A. Alim; Islam Mohammed Mahbubul; Rahman Saidur; A. Hepbasli; Altab Hossain; Khairul, M.A.; Alim, M.A.; Mahbubul, I.M.; Hossain, A.; Hepbasli, A.; Saidur, R.Heat exchangers have been widely used for efficient heat transfer from one medium to another. Nanofluids are potential coolants which can afford excellent thermal performance in heat exchangers. This study examined the effects of water and CuO/water nanofluids (as coolants) on heat transfer coefficient heat transfer rate frictional loss pressure drop pumping power and exergy destruction in the corrugated plate heat exchanger. The heat transfer coefficient of CuO/water nanofluids increased about 18.50 to 27.20%with the enhancement of nanoparticles volume concentration from 0.50 to 1.50% compared to water. Moreover improvement in heat transfer rate was observed for nanofluids. On the other hand exergy loss was reduced by 24% employing nanofluids as a heat transfermediumwith comparing to conventional fluid. Besides 34% higher exergetic heat transfer effectiveness was found for 1.5 vol.% of nanoparticles. It has a small penalty in the pumping power. Hence the plate heat exchanger performance can be improved by adapting the working fluid with CuO/water nanofluids. © 2013 Elsevier Ltd. © 2017 Elsevier B.V. All rights reserved.Article Citation - WoS: 38Citation - Scopus: 40Advanced exergoenvironmental assessment of a natural gas-fired electricity generating facility(PERGAMON-ELSEVIER SCIENCE LTD, 2014-05) Emin Acikkalp; Haydar Aras; Arif Hepbasli; Aras, Haydar; Hepbasli, Arif; Açikkalp, EminThis paper presents conventional and advanced exergoenvironmental analyses of an electricity generation facility located in the Eskisehir Industry Estate Zone Turkey. This facility consists of gas turbine and steam cycles which generate electrical power of approximately 37 MW and 18 MW respectively. Exergy efficiency of the system is 0.402 and exergy destruction rate of the system is 78.242 MW. Unit exergy cost of electrical power generated by the system is 25.66 $/GJ and total exergoeconomic factor of the system is 0.279. Conventional exergy analysis method was applied to the system first. Next exergy environmental impacts of exergy destruction rate within the facility's components were divided into four parts generally as endogenous exogenous avoidable and unavoidable environmental impact of exergy destruction rate. Through this analysis improvement potential of the environmental impacts of the components and the overall system and the environmental relations between the components were then determined. Finally exergoenvironmental factor was determined as 0.277 and environmental impact of the electricity was 8.472 (Pts/h). The system has 33% development potential for environmental impacts while its components have weak relations because of big endogenous parts of environmental impacts (80%). It may be concluded that advanced exergoenvironmental analysis indicated that priority should be given to the GT and CC while defining the improvement strategies. (C) 2014 Elsevier Ltd. All rights reserved.Article Citation - WoS: 81Citation - Scopus: 92Sustainable assessment of solar hydrogen production techniques(Elsevier Ltd, 2012-10) Elif Bozoglan; Adnan Mi̇di̇lli̇; A. Hepbasli; Hepbasli, Arif; Midilli, Adnan; Bozoglan, ElifThis study addresses some technical issues related to solar hydrogen production methods. In this regard exergy-based environmental and sustainability parameters are applied to an electrolysis process for hydrogen production. Accordingly the environmental destruction index is found to be 0.16 while exergetic benign index is calculated as 6.30. While the exergy efficiency increases from 10 to 90% the sustainability index rises from 0.01 to 8.1. Thus solar hydrogen production should be used for practical applications because of higher exergetic sustainability potential and lower environmental destruction index. © 2012 Elsevier Ltd. © 2017 Elsevier B.V. All rights reserved.Article Citation - WoS: 111Citation - Scopus: 130Energy exergy and sustainability analyses of hybrid renewable energy based hydrogen and electricity production and storage systems: Modeling and case study(Elsevier Ltd, 2013-11) Hakan Caliskan; I. Dincer; A. Hepbasli; Hepbasli, Arif; Dincer, Ibrahim; Caliskan, HakanIn this study hybrid renewable energy based hydrogen and electricity production and storage systems are conceptually modeled and analyzed in detail through energy exergy and sustainability approaches. Several subsystems namely hybrid geothermal energy-wind turbine-solar photovoltaic (PV) panel inverter electrolyzer hydrogen storage system Proton Exchange Membrane Fuel Cell (PEMFC) battery and loading system are considered. Also a case study based on hybrid wind-solar renewable energy system is conducted and its results are presented. In addition the dead state temperatures are considered as 0 °C 10 °C 20 °C and 30 °C while the environment temperature is 30 °C. The maximum efficiencies of the wind turbine solar PV panel electrolyzer PEMFC are calculated as 26.15% 9.06% 53.55% and 33.06% through energy analysis and 71.70% 9.74% 53.60% and 33.02% through exergy analysis respectively. Also the overall exergy efficiency ranging from 5.838% to 5.865% is directly proportional to the dead state temperature and becomes higher than the corresponding energy efficiency of 3.44% for the entire system. © 2017 Elsevier B.V. All rights reserved.Article Citation - WoS: 106Citation - Scopus: 123Energy- economic- and environmental analysis of a flat-plate solar collector operated with SiO2 nanofluid(SPRINGER, 2014-11-05) M. Faizal; R. Saidur; S. Mekhilef; Arif Hepbasli; I. M. Mahbubul; Mekhilef, S.; Mahbubul, I. M.; Saidur, R.; Hepbasli, A.; Faizal, M.To overcome the environmental impact and declining source of fossil fuels renewable energy sources need to meet the increasing demand of energy. Solar thermal energy is clean and infinite suitable to be a good replacement for fossil fuel. However the current solar technology is still expensive and low in efficiency. One of the effective ways of increasing the efficiency of solar collector is to utilize high thermal conductivity fluid known as nanofluid. This research analyzes the impact on the performance fluid flow heat transfer economic and environment of a flat-plate solar thermal collector by using silicon dioxide nanofluid as absorbing medium. The analysis is based on different volume flow rates and varying nanoparticles volume fractions. The study has indicated that nanofluids containing small amount of nanoparticles have higher heat transfer coefficient and also higher energy and exergy efficiency than base fluids. The measured viscosity of nanofluids is higher than water but it gives negligible effect on pressure drop and pumping power. Using SiO2 nanofluid in solar collector could also save 280 MJ more embodied energy offsetting 170 kg less CO2 emissions and having a faster payback period of 0.12 years compared to conventional water-based solar collectors.Conference Object Citation - Scopus: 1Exergetic performance analysis and comparison of various building heating options(IEEE Computer Society help@computer.org, 2014) H. Tuzcu; Huseyin Gunerhan; A. Hepbasli; Hepbasli, A.; Gunerhan, H.; Tuzcu, H.Heating cooling and lighting appliances in buildings account for more than one third of the world's primary energy demand. Therefore they are considered one of the main parts of the energy consumption in buildings. This study deals with energy/exergy and sustainability performance comparison of a building heating energy system from the primary energy production to the building envelope. A four story building located in Eskisehir Turkey is considered for the analysis. The indoor and outdoor air temperatures of the building are 22°C and -12°C respectively. For heating applications three options are studied namely (i) standard boiler (ii) condensing boiler and (iii) ground heat pump water-water as driven by renewable and nonrenewable energy sources. Energy and exergy analysis methods which are based on the lowex approach are performed to evaluate their performances and compare them through energy and exergy efficiencies and sustainability index. Energy and exergy flows are also studied and illustrated accordingly to have an insight into for possible improvements in the system components. Also the energetic and exergetic renewability ratios are employed here along with sustainability index. For a building with a net area of 2430.4 m2 the total exergy efficiencies of the considered heating systems are 25.3% 6.1% and 6.9% respectively for three cases. The sustainability index for three cases found as 1.196 1.236 and 1.274 respectively. © 2014 Asian Institute of Technology. © 2014 Elsevier B.V. All rights reserved.
