Hakan Caliskan

Usak University · Department of Mechanical Engineering

In this study, a Grey‐box (GB) model was developed to predict the optimum mass flow rates of inlet streams of a Shell and Tube Heat Exchanger (STHE) under varying process conditions. Aspen Exchanger Design and Rating (Aspen‐EDR) was initially used to construct a first principle model (FP) of the STHE using industrial data. The Genetic Algorithm (GA...

A grey‐box modelling framework was developed for the estimation of cut point temperature of a crude distillation unit (CDU) under uncertainty in crude composition and process conditions. First principle (FP) model of CDU was developed for Pakistani crudes from Zamzama and Kunnar fields. A hybrid methodology based on the integration of Taguchi metho...

In this study, life cycle assessment-based advanced exergoenvironmental analysis is performed to the cogeneration system of a ceramic industry for five different reference environmental states (between 10 and 30 °C) by considering four different climatic conditions. The designed system works in the direction of reducing carbon emissions due to natu...

Implementation of heating, ventilation, and air conditioning units in buildings for space cooling represents a passive method for achieving thermal comfort and reducing power consumption. This paper introduces solar energy assisted in-direct evaporative cooling system with a novel multi-passage dry channel. The main objectives are to evaluate exerg...

This research explores the enhancement of single-slope solar still performance using phase change material (PCM), specifically paraffin, incorporating Al 2 O 3 nanoparticles. The application of paraffin, a PCM, improves energy storage density and maintains a consistent temperature during the phase transition. Adding Al 2 O 3 nanoparticles to the PC...

Uncertainties in the process industries are the biggest challenge for smooth operation. This study is based on the use of artificial intelligence based surrogate modeling for predicting and optimizing emissions in combustion sections of cement manufacturing plants under uncertainty. Uncertainties in feed flow rate, kiln air flow rate, tertiary air...

Hardware‐based sensing frameworks such as cooperative fuel research engines are conventionally used to monitor research octane number (RON) in the petroleum refining industry. Machine learning techniques are employed to predict the RON of integrated naphtha reforming and isomerisation processes. A dynamic Aspen HYSYS model was used to generate data...

The stability and control of process industries have historically faced obstacles due to inherent uncertainties in their operations. This work focuses on leveraging machine learning models as a surrogate to facilitate real-time optimization of operating conditions of the direct hydrogenation of CO2 to enhance methanol production while minimizing ex...

This study investigates the spray combustion characteristics of waste cooking oil (WCO) (renewable fuel) in comparison between a swirl nozzle (SN) and a conventional nozzle (CN) of equal cross‐section. n‐Heptane, methyl decanoate, and methyl‐9‐decenoate were used as WCO substitutes in the simulation. The research primarily focuses on multiphase flo...

In this study, thermodynamic analysis is implemented to the kerosene‐fuelled high by‐pass turbofan (HBP‐TF) engine to assess entropy, exergy, environmental, and sustainability metrics for different design variables such as pressure ratio of high‐pressure compressor (HPC‐PR) ranging from 7.5 to 8.5 and turbine inlet temperature (TIT) varying from 14...

A partial cooling supercritical carbon dioxide cycle is used in this study for the application of a solar power tower. Additionally, the organic Rankine cycle (ORC) is considered as a bottoming cycle in the process of recovering wasted heat. Moreover, fluids with zero ozone depletion potential and low global warming potential are considered as oper...

Solar power tower technology has strong potential among the other concentration solar power techniques for large power generation. Therefore, it is necessary to make a new and efficient power conversion system for utilizing the solar power tower system. In present research, a novel combined cycle is proposed to generate power for the application of...

Fuels such as kerosene, diesel No. 2, and JP-4 are extensively utilized in aviation engines. This study conducts a comprehensive comparison of these fuels within the context of a turbojet engine modeled using GasTurb. While key operational parameters like Mach numbers and total pressure ratios are held constant, variations are introduced in the fue...

This study is based on gray-box modeling for the prediction of optimum mass flow rates of inlet streams of a Plate and Fin Heat Exchanger under uncertainty. A first principle model of the Plate and Fin Heat Exchanger was developed in Aspen Exchanger Design and Rating. Genetic algorithm was integrated with the first principle model to achieve the hi...

A comparative analysis of a combined system comprising organic Rankine cycles (ORC) and supercritical CO2 (sCO2) cycles for concentrated solar power (CSP) applications was performed in the article. Low global warming potential (GWP) fluids were used to investigate strategies for reducing the effects on global warming. In the current study, four dif...

In the present study, a novel combined power cycle for solar power tower (SPT) system consisting of helium Brayton cycle (HBC) and transcritical CO 2 (TCO 2 ) for waste heat recovery is being studied for carbon‐free generation. The performance of the proposed SPT based combined cycle (SPT‐HBC‐TCO 2 cycle) is compared with SPT based basic cycle (SPT...

This paper reports the Maisotsenko's cycle-based waste heat recovery system with enhanced humidification to exploit the maximum waste heat recovery potential of the gas turbine. This research uses an integrated methodology coupling thermodynamic balances with heat transfer model of air saturator. The performance of the system is deduced which are a...

Internal combustion engines are one of the major factors of global warming and greenhouse gasses, as they emit harmful emissions such as CO2, CO, HC, and NOx. Therefore, the regulations on CO2 and other exhaust emissions for vehicles are gradually being tightened. In this study, exhaust emissions of the spark ignition engine are measured by using t...

Process uncertainties have been a big challenge to the stable operation and control of process industries. The current study is based on the use of an artificial intelligence model as a surrogate in the online optimization of process conditions of reactive units of a petroleum refinery under uncertainty. Initially, a steady-state Aspen model was us...

In this work, exergy analysis of cumene production plant is carried out in an integrated environment of Aspen Plus and MATLAB. Physical exergy is calculated in Aspen Plus V.10, while an interface of MATLAB and Aspen Plus is used to calculate chemical exergy of the process. For systematic analysis and comparison, the cumene plant is divided into thr...

I am happy to announce that I have been appointed as an Associate Editor for the “Frontiers in Energy Research” journal (SCI-exp. index, ISSN: 2296-598X)

This paper investigates an alternative cooling method for photovoltaic (PV) solar panels by using water spray. For the assessment of the cooling process, the experimental setup of water spray cooling of the PV panel was established at Sultanpur (India). This setup was tested in a geographical location with different climate conditions. It was found...

In this study, aviation, energy, exergy, environmental, exergoeconomic, and exergoenvironmental analyses are performed on a CFM56-3 series high by-pass turbofan engine fueled with Jet-A1 fuel. Specific fuel consumption and specific thrust of the engine are found to be 0.01098 kg/kN.s and 0.3178 kN/kg/s, respectively. Engine's energy efficiency is c...

This paper provides a comprehensive assessment of the humid air turbine-based waste heat recovery system with respect to different flow configurations in the air saturator. The novelty of this work is to provide a holistic approach to the environmental and thermoecological assessment of Maistosenko cycle-based waste heat recovery units by consideri...

My paper entitled “Energy, environment and enviroeconomic analyses and assessments of the turbofan engine used in aviation industry” recognized as a top cited paper in “ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY” (SCI-exp. indexed) journal in 2021-2022

The objective of this study is to evaluate the energetic, exergetic, sustainability, economic and environmental performances of a 4-cylinder turbodiesel aviation engine (TdAE) used on unmanned aerial vehicles for the take-off operation mode to assess the system with large aspects. Energy efficiency of the system is found as 43.158%, while exergy ef...

In this study, utilization of a bio-based fuel in a turbojet engine is comprehensively monitored with adapting various useful indicators for the scope of the study based on thermodynamic principles. In this regard, extensive energy and exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses are performed for both the turbo...

In this study, not only conventional and advanced exergies, but also advanced exergoeconomic, extended exergy and combined extended-advanced exergy analyses are firstly applied to the novel ejector-based CO2 transcritical Combined Cooling, Heating and Power (CCHP) system powered by geothermal energy. It is found that the evaporator and domestic wat...

Nuclear energy and renewables are the two principal options for low carbon energy generation. However, synergies among these resources have yet to be fully exploited, and the advantages of integrating these generation options directly are only now being explored. Nuclear–renewable hybrid energy systems (HESs) consider opportunities to couple these...

In this study, renewable and sustainable biofuel production from waste cooking oil and its blends with diesel fuel are investigated in terms of specific fuel properties. The fuel blends are named “Renewable Biofuel (RBF) 20” (20% biofuel–80% diesel), “Renewable Biofuel 50” (50% biofuel–50% diesel), and “Renewable Biofuel 100” (100% biofuel). The ac...

There is one correction to make to the original article.

Shale oil reserves exploration is getting huge investments due to the depletion of conventional reserves. Computational methods have been used to realize optimum design and operation of shale oil and gas reserves exploration and processing. The uncertainty associated with the composition of shale reserves and operating conditions during processing...

The current work developed an integrated framework of artificial intelligence and genetic algorithm (GA) for the furnace of a petroleum refinery to predict the optimum amount of excess air and mass flow rates of crude oil and fuel stream in the presence of uncertainty in process conditions. A furnace model was built in Aspen Exchanger Design and Ra...

In this study, the kerosene fueled turboprop engine of a freight aircraft is investigated along with exergy dynamic, sustainability, and thermodynamic-based environmental and enviroeconomic analyses under 7 different flight phase points (starting from 1 to ending at 7) and 5 different flight phases during a flight cycle which is assumed to be perfo...

In this study, J69 military turbojet aero engine of Cessna T-37B/C pilot trainer aircraft fueled by jet fuel and %100-biofuel is assessed with aviation, energy, exergy, sustainability, exergoenvironment and thermoeconomic perspectives to show the reliability of the biofuel in terms of various aspects. The methyl-oleate (C19H36O2) is selected as a m...

In this study, an artificial intelligence-based framework was developed to monitor the efficiency of the carbon capture unit, i.e., the Sour Compression Unit (SCU) and a cryogenic unit, in a cement manufacturing plant. Initially, an Aspen Plus-based model of the SCU and the cryogenic unit was developed. The process model was then transformed into d...

I am very happy to be in the Elsevier’s "World’s Top 2% Scientists" list again which was announced on 10 October 2022. This work used Scopus data provided by Elsevier through ICSR Lab. I was also ranked 1st among Usak University academics and became one of Turkey’s top 200 scientists. The detailed information and list can be obtained from Elsevier...

I am happy to announce that I won all of the 3 categories of “Academic performance award”, “Publication award in the journal with the highest impact factor” and “Citation award” in the Usak University (05.10.2022). Details: https://www.hakancaliskan.net/en/usak-universitesi-2022-2023-akademik-yukselme-ve-odul-toreni-gerceklestirildi/ & https://www....

Since Korean apartments are high-rise structures, the only renewable energy that can be applied for ZEB advantage is in fact solar energy. The CO2 reduction effect of PVT, which can produce heat and electricity at the same time, has already been noted, and is 2.1 times greater than that of PV alone. Like the solar thermal system, the PVT requires a...

In this study, exergy dynamic and advanced exergy analyses are applied to the turbojet engine to assess its mexogenous, endogenous, exogenous, avoidable and unavoidable exergies under the environment conditions of 15 °C temperature and 1 bar pressure. The maximum exergy point in the turbojet engine is found for the combustor in which C11H23 (Jet-A1...

“AD Scientific Index 2023” has been announced. In the list of scientists organized according to this index, Prof. Dr. Hakan Çalışkan succeeded to rank 1st among Uşak University scientists, 61st among Turkish scientists, 382th in the European scientists list and 1271st in the world scientists list in “Energy-Exergy-Thermodynamic-Heat Transfer-Enviro...

In this study, exergy dynamic and advanced exergy analyses are applied to the turbojet engine to assess its mexogenous, endogenous, exogenous, avoidable and unavoidable exergies under the environment conditions of 15 °C temperature and 1 bar pressure. The maximum exergy point in the turbojet engine is found for the combustor in which C11H23 (Jet-A1...

In this study, an artificial intelligence-based framework was developed to monitor the efficiency of the carbon capture unit, i.e., the Sour Compression Unit (SCU) and a cryogenic unit, in a cement manufacturing plant. Initially, an Aspen Plus-based model of the SCU and the cryogenic unit was developed. The process model was then transformed into d...

In this study, energy, exergy, economic, environmental, energy based economic, exergoeconomic and enviroeconomic analyses (namely the 7E analysis) are performed to the gas turbine type of aero engines used in the civil and military aviation industries. The energy efficiency of the system is determined as 19.37%, and the exergy efficiency of the sys...

In this paper, a photovoltaic-thermal (PVT) module based desiccant air-cooling system for buildings is analyzed by extended exergy analysis. Extended exergy analysis contains all information about material, energy, capital, labor, and environmental flows. The results show that the extended exergy analysis gives different results from conventional e...

In this paper, environmental impact analysis is applied to the various auxiliary power units (APUs) used for commercial aircraft in air transportation sector. The exhaust emissions of different auxiliary power units used in commercial aircraft are investigated. The emission index (EI), global warming potential (GWP) rate, global warming potential i...

This study presents various exergy based economic analyses of a gas turbine cogeneration system (COGEN) for a ceramic tile plant for five different reference environment temperatures. Specific Exergy Costing (SPECO) method, which uses fuel-product exergy approach and flow costs, and Exergy-Cost-Energy-Mass (EXCEM) method, which considers exergy los...

Nowadays, aero-engines have been opted more due to their important benefits for powering unmanned aerial vehicles or producing electricity or pneumatic powers for aircraft engines. In this study, a small gas turbine engine (S-GTE) used in aviation applications was dealt with using thermodynamic and environmental methods at ten different power setti...

In this study, energy, exergy, environmental and sustainability assessments of jet and hydrogen (H2) fueled J79-GE-17 turbojet engine are done. The results are compared for hydrogen and JP-8 fueled modes. It is found that aviation performance metrics are better for hydrogen utilization mode. By using hydrogen fuel instead of JP-8 fuel; the specific...

I am happy to be awarded/nominated by the “ISSN (International Society for Scientific Network) International Research Awards 2022 (IIRA-2022)” for the "INTERNATIONAL BEST RESEARCHER AWARD" in my field of study. I received the e-mail on 22 April 2022 for this great new.

One of my books (as Nuclear Energy Series-NES) entitled “Nuclear-renewable Hybrid Energy Systems” (ISSN: 1995-7807) in International Atomic Energy Agency (IAEA Nuclear Energy Series; 2022; 89 ISSN 1995-7807; International Atomic Energy Agency (IAEA)) has been announced as a Preprint. The access link: https://preprint.iaea.org/search.aspx?orig_q=RN:...

One of my books (as Nuclear Energy Series-NES) entitled “Nuclear-renewable Hybrid Energy Systems” (ISSN: 1995-7807) in International Atomic Energy Agency (IAEA Nuclear Energy Series; 2022; 89 ISSN 1995-7807; International Atomic Energy Agency (IAEA)) has been announced as a Preprint. The access link: https://preprint.iaea.org/search.aspx?orig_q=RN:...

Top lists version 2 of the "AD Scientific Index 2022" index was announced on 19 April 2022. In “Energy-Exergy-Thermodynamic-Heat Transfer-Environmental” research areas, my ranking in the scientist list is as follows: #1st in Usak University, #65th in Turkey, #332th in Europe, #1211th in the World. Link: https://www.adscientificindex.com/...

In this study, a boiler heating unit of a building is used as a heat source for an economizer heat exchanger which is connected to a PCM (phase change material) latent heat storage unit-based heat exchanger used for additional heating system. The system is simulated and analyzed for 24 min. It is found that during the melting process of the RT55 PC...

In this study, energy, exergy, economic, environmental, energy based economic, exergoeconomic and enviroeconomic analyses (namely the 7E analysis) are performed to the gas turbine type of aero engines used in the civil and military aviation industries. The energy efficiency of the system is determined as 19.37%, and the exergy efficiency of the sys...

Our best paper awards of 2021 (ESTU): Süleyman Kağan Ayaz, Onder Altuntas, Hakan Caliskan, (2021). Enhanced life cycle modelling of a micro gas turbine fuelled with various fuels for sustainable electricity production. Renewable and Sustainable Energy Reviews, 149;111323:1-24. https://www.researchgate.net/publication/352410585_Enhanced_life_cycle_...

In this paper, exergy, sustainability, unsustainability, environmental, enviroeconomic, ecological and inefficiency assessments are done for the JP-8-fueled turbojet engine which is designed for unmanned aerial vehicles (UAVs). It is found that the combustion chamber of the turbojet engine has the minimum exergetic efficiency (12.74%) among the com...

In this paper, exergy, sustainability, unsustainability, environmental, enviroeconomic, ecological and inefficiency assessments are done for the JP-8-fueled turbojet engine which is designed for unmanned aerial vehicles (UAVs). It is found that the combustion chamber of the turbojet engine has the minimum exergetic efficiency (12.74%) among the com...

I am happy to announce that my paper entitled “Energy, environment and enviroeconomic analyses and assessments of the turbofan engine used in aviation industry” has been recognized as a top cited paper in: ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY journal.

In this study, TOPSIS analysis was applied to decide the optimum refrigerants with cost, safety, environmental and enviroeconomic concerns along with thermophysical properties. A vapor compression refrigeration cycle performance was investigated with the statistical and thermodynamic approaches. COP, exergy efficiency, total, avoidable, and unavoid...

In this study, energy and exergy based approaches, supported sustainability/ analyses, are applied to the photovoltaic (PV) electrolysis and magnetic heat engine, coupled novel system used for hydrogen production and electricity generation. The results point out that the magnetic field does not only improve the hydrogen production, but also low-tem...

In this study, the life cycle assessment based exergoenvironmental analyses are performed to the air compressor (AC), combustion chamber (CC), gas turbine (GT), wall tile dryer (WD), ground tile dryer (GD) and hot air pipeline (PL) included cogeneration system (COGEN) used for ceramic tile factories. Five different environment temperatures are cons...

The natural gas fired combined heat and power system driven by a micro gas turbine engine (M−CHP) of a dairy products company is investigated basing on the actual test data. The system is investigated along with economic analysis and specific cost (SPECO), exergy-cost-energy-mass (EXCEM), modified EXCEM (m-EXCEM) thermoeconomic analyses. The presen...

My research project proposal has been accepted for funding by The Scientific and Technological Research Council of Turkey (TUBITAK). The program name: TUBITAK-1001 - The Scientific and Technological Research Projects Funding Program The link: https://www.hakancaliskan.net/en/ardeb-2021-yili-2-donem-1001-projelerinin-bilimsel-degerlendirme-sonuclari...

AD Scientific Index 2022 Index is announced. According to this index, my ranking in the scientist list is as follows: #1 in my university, #54 in Turkey, #312 in Europe and #1187 in the World. Link: https://www.adscientificindex.com/scientist.php?id=209702

Abstract: In this study, specific biofuel is produced from waste cooking oils and investigated on the basis of “waste-to-fuel/energy” perspective. Then, the fuel properties (viscosity, density, cloud point, flash point, acid number, lower heating values and pour point) of produced biofuel and diesel are obtained. The exhaust emissions resulting fro...

In this study, environmental and enviroeconomic analyses regarding two different turbofan engine families that are commonly used in commercial aircrafts are carried out at Landing and Take-Off (LTO) cycle involving take-off, climb-out, approach and idle phases. For this aim, HC, CO, NOX and CO2 emissions of family 1 (F1) and family 2 (F2) engines a...

-It is an honor to be in top scientists list in the world again according the information in Elsevier. -Rank#1 in Usak University & In top 200 scientist in Turkey. Source: https://elsevier.digitalcommonsdata.com/datasets/btchxktzyw/3 Citation metrics are widely used and misused. We have created a publicly available database of over 100,000 top-sc...

Exergetic and environmental metrics of aircraft engines are topics of paramount importance for studies examining the effects of fuel consumption & combustion on environment. Therefore, it is important to quantify these parameters so as to predict the extent of environmental impact originated from aircraft engines such as turbofans. In this study, e...