Search results for: Arif Hepbasli

Items from 1 to 20 out of 161 results

article

Performance evaluation of a building integrated photovoltaic (BIPV) system combined with a wastewater source heat pump (WWSHP) system

Mustafa Araz, Arif Hepbasli, Emrah Biyik, Mehdi Shahrestani, more

Energy Procedia > 2017 > 140 > C > 434-446

This paper deals with both energetic and exergetic performance assessments of two combined systems as a whole. The first one is a Building Integrated Photovoltaic (BIPV) system while the second one is a wastewater (WW) Source Heat Pump (WWSHP) system. Both systems were installed at Yasar University, Izmir, Turkey within the framework of EU/FP7 and the Scientific and Technological Research Council...

article

Experimental performance assessment of a vacuum cooling system through exergy analysis method

Hande Mutlu Ozturk, Arif Hepbasli

Journal of Cleaner Production > 2017 > 161 > C > 781-791

The food industry, especially the cooling of the food, is a major consumer of energy. The high energy consumption forces the food cooling industry for new refrigeration systems and cooling foods with the low energy consumption. Vacuum cooling method is fast and an evaporative process while it has many advantages such as shorter processing times, improved product shelf life, consequent energy savings,...

chapter

Investigating the effect of turbine inlet temperature on the exergetic improvement potential of a small turbojet engine

Onder Turan, Arif Hepbasli, T. Hikmet Karakoc

2017 8th International Conference on Mechanical and Aerospace Engineering (ICMAE) > 301 - 304

2017 8th International Conference on Mechanical and Aerospace Engineering (ICMAE)

This paper analyzes and evaluates exergetic improvement rate (IPex) of the components of a small turbojet engine with various turbine inlet temperatures. The engine consists of an inlet, starter generator, a centrifugal compressor, a reverse flow combustion chamber, an axial-flow turbine and an exhaust nozzle. IPex analysis is performed on this turbomachinery utilizing kerosene as a fuel. Exergetic...

article

A key review of building integrated photovoltaic (BIPV) systems

Emrah Biyik, Mustafa Araz, Arif Hepbasli, Mehdi Shahrestani, more

Engineering Science and Technology, an International Journal > 2017 > 20 > 3 > 833-858

Renewable and sustainable energy generation technologies have been in the forefront due to concerns related to environment, energy independence, and high fossil fuel costs. As part of the EU’s 2020 targets, it is aimed to reach a 20% share of renewable energy sources in final energy consumption by 2020, according to EU’s renewable energy directive. Within this context national renewable energy targets...

article

Assessment of cost sources and improvement potentials of a ground-source heat pump food drying system through advanced exergoeconomic analysis method

Zafer Erbay, Arif Hepbasli

Energy > 2017 > 127 > C > 502-515

Advanced exergoeconomic analysis, the so-called new exergetic approach combined with the economic analysis, is applied to a ground-source heap pump (GSHP) drying system in this study. The thermodynamic inefficiencies and cost performance of the system components are evaluated in parts. Moreover, the results of the advanced exergoeconomic analysis are compared to those of the conventional exergoeconomic...

article

Experimental and numerical studies to assess the energy performance of naturally ventilated PV façade systems

Mehdi Shahrestani, Runming Yao, Emmanuel Essah, Li Shao, more

Solar Energy > 2017 > 147 > C > 37-51

This paper presents a holistic approach to assess the energy performance of a naturally ventilated PV façade system. A rigorous combined experimental and numerical approach is established. The real energy performance of the system has been evaluated through a long-term high resolution monitoring of a typical ventilated PV façade system. A numerical model based on TRaNsient SYstem Simulation (TRNSYS)...

article

Performance assessment of an ice rink refrigeration system through advanced exergoeconomic analysis method

Gulcan Ozel Erol, Emin Açıkkalp, Arif Hepbasli

Energy and Buildings > 2017 > 138 > C > 118-126

Advanced exergy analysis has gained great importance as a comprehensive evaluation tool for energy conversion systems in recent years. In this regard, splitting the exergy destruction into avoidable/unavoidable parts has enabled us to identify the improvement potential of component while endogenous/exogenous parts of the exergy destruction have been detailed studied to get more information about interactions...

article

Energy and exergy analyses of a hybrid hydrogen energy system: A case study for Bozcaada

Yildiz Kalinci, Ibrahim Dincer, Arif Hepbasli

International Journal of Hydrogen Energy > 2017 > 42 > 4 > 2492-2503

In the study, a hybrid energy system for hydrogen and electric production is conceptually developed and applied to an island, Bozcaada. A thermodynamic analysis is performed using energy and exergy approaches. The conceptual system is examined from the viewpoints of economic and energy load distributions by the Hybrid Optimization Model for Electric Renewable (HOMER) tool. In the study, stand-alone...

article

Exergoeconomic evaluation of a ground-source heat pump food dryer at varying dead state temperatures

Zafer Erbay, Arif Hepbasli

Journal of Cleaner Production > 2017 > 142 > P4 > 1425-1435

This study deals with exergoeconomic analysis of a ground-source heat pump food dryer through the specific exergy costing method for the first time. Moreover, variations of the exergetic and exergoeconomic performance parameters with dead state temperatures are also investigated and discussed with the literature results. The results show that the condenser is the most important system component from...

article

Comparative assessment of various chlorine family thermochemical cycles for hydrogen production

M. Tolga Balta, Ibrahim Dincer, Arif Hepbasli

International Journal of Hydrogen Energy > 2016 > 41 > 19 > 7802-7813

This study deals with a comparative assessment of various chlorine family cycles, namely copper–chlorine (CuCl), magnesium–chlorine (MgCl), iron–chlorine (Fe–Cl) and vanadium–chlorine (V–Cl) cycles, which are driven by heat and/or electricity. Hydrogen production through thermochemical and/or hybrid cycles can play a significant role in reducing greenhouse gas emissions and hence offering opportunities...

article

Exergy as a useful tool for the performance assessment of aircraft gas turbine engines: A key review

Yasin Şöhret, Selcuk Ekici, Önder Altuntaş, Arif Hepbasli, more

Progress in Aerospace Sciences > 2016 > 83 > C > 57-69

It is known that aircraft gas turbine engines operate according to thermodynamic principles. Exergy is considered a very useful tool for assessing machines working on the basis of thermodynamics. In the current study, exergy-based assessment methodologies are initially explained in detail. A literature overview is then presented. According to the literature overview, turbofans may be described as...

chapter

Exergy Analysis of Food Drying Processes

Neslihan Colak, Mustafa T. Balta, Filiz Içier, Ebru Kuzgunkaya, more

Green Energy and Technology > Global Warming > 267-279

It is well known that micro-level system parameters may have some great impact on macro-level energy aspects, the environment, and sustainability. Of course, if one wants to approach these thermodynamically, there are two ways: energy analysis through the first law of thermodynamics and exergy analysis through the second law of thermodynamics. Exergy analysis is an essential tool to expose the impacts...

book

Global Warming

Ibrahim Dincer, Adnan Midilli, Arif Hepbasli, T. Hikmet Karakoc

Green Energy and Technology

Global Warming: Engineering Solutions goes beyond discussing the definition and causes of climate change, and offers concrete solutions for solving global warming. Innovative and forward-thinking engineering solutions are needed to tackle global warming’s threat to the planet, and this book offers numerous methods to address global warming’s identified causes. Drawing upon the collective knowledge...

article

A new correlation for predicting the thermal conductivity of nanofluids; using dimensional analysis

Samir Hassani, R. Saidur, Saad Mekhilef, Arif Hepbasli

International Journal of Heat and Mass Transfer > 2015 > 90 > Complete > 121-130

Thermal conductivity of nanofluids is a key thermophysical property, which depends on concentration and size of nanoparticles, temperature and thermophysical properties of the base fluid. Over last decades, several works have been done on the thermal conductivity of nanofluids while a number of numerical and theoretical models have been proposed. However, most of these models were not able to predict...

article

Heat exchanger applications in wastewater source heat pumps for buildings: A key review

Oguzhan Culha, Huseyin Gunerhan, Emrah Biyik, Orhan Ekren, more

Energy & Buildings > 2015 > 104 > Complete > 215-232

Wastewater heat recovery applications are becoming widespread in energy saving applications. A sustainable and low emissions operation in air conditioning and heating processes is achieved by harvesting the otherwise wasted energy in wastewater through specially designed heat exchangers, lying at the core of heat pumps. This combined system is called wastewater source heat pump. In this study, a review...

article

Advanced exergy analysis of an aircraft gas turbine engine: Splitting exergy destructions into parts

Yasin Şöhret, Emin Açıkkalp, Arif Hepbasli, T. Hikmet Karakoc

Energy > 2015 > 90 > P2 > 1219-1228

Advanced exergy analysis of an aircraft gas turbine engine is presented in this paper. In this framework, the main exergy parameters of the engine components are introduced while the exergy destruction rates within the engine components are split into endogenous/exogenous and avoidable/unavoidable parts. Also, the mutual interdependencies among the components of the engine and realistic improvement...

article

Avoidable and unavoidable exergy destructions of a fluidized bed coal combustor and a heat recovery steam generator

Meliha Callak, Firuz Balkan, Arif Hepbasli

Energy Conversion and Management > 2015 > 98 > C > 54-58

Advanced exergy analysis was performed using the actual operational data taken from a fluidized bed coal combustor (FBCC) and a heat recovery steam generator (HRSG) in a textile plant located at Torbalı, Izmir. First, the conventional exergy analysis of the units was carried out. The exergetic efficiencies of the units were found to be 44.2% and 46.2%, respectively. Advanced exergy analysis was then...

article

Techno-economic analysis of a stand-alone hybrid renewable energy system with hydrogen production and storage options

Yildiz Kalinci, Arif Hepbasli, Ibrahim Dincer

International Journal of Hydrogen Energy > 2015 > 40 > 24 > 7652-7664

In the present study, a hybrid renewable energy system using hydrogen energy as energy storage option is conceptually modeled for the Bozcaada Island in Turkey. The system is investigated from the techno-economic point of view. The Hybrid Optimization Model for Electric Renewable (HOMER) tool is used to define the optimum size of the equipment based on the geographical and meteorological data of the...

article

Advanced exergoenvironmental assessment of a building from the primary energy transformation to the environment

Emin Açıkkalp, Arif Hepbasli, Cem Tahsin Yucer, T. Hikmet Karakoc

Energy & Buildings > 2015 > 89 > Complete > 1-8

Buildings are of great importance in terms of consumption of energy all over the world. Building sector has a significant influence over the total natural resource consumption and is significant contributors of greenhouse gases. Exergy-based methods in assessing the performance of buildings have become very popular in recent years. In this context, conventional exergoenvironmental methods include...

article

Comparison of exergoeconomic analysis of two different perlite expansion furnaces

Mert Gürtürk, Hakan F. Oztop, Arif Hepbasli

Energy > 2015 > 80 > C > 589-598

In this study, exergoeconomic analyses of two different perlite expansion furnaces are performed based on the actual operational data. The exergy cost and the cost per unit of exergy of the expanded perlite produced by the Former Perlite Expansion Furnace (FPEF) are determined to be 62.886 US$/h and 648.309 US$/GJ while those produced by the New Perlite Expansion Furnace (NPEF) are obtained to be...

Publication date

Set your own date range

Content availability

Available (160)
None (1)

Publication type

article (158)
book (3)

INFONA - science communication portal

Search results for: Arif Hepbasli

Performance evaluation of a building integrated photovoltaic (BIPV) system combined with a wastewater source heat pump (WWSHP) system

Experimental performance assessment of a vacuum cooling system through exergy analysis method

Investigating the effect of turbine inlet temperature on the exergetic improvement potential of a small turbojet engine

A key review of building integrated photovoltaic (BIPV) systems

Assessment of cost sources and improvement potentials of a ground-source heat pump food drying system through advanced exergoeconomic analysis method

Experimental and numerical studies to assess the energy performance of naturally ventilated PV façade systems

Performance assessment of an ice rink refrigeration system through advanced exergoeconomic analysis method

Energy and exergy analyses of a hybrid hydrogen energy system: A case study for Bozcaada

Exergoeconomic evaluation of a ground-source heat pump food dryer at varying dead state temperatures

Comparative assessment of various chlorine family thermochemical cycles for hydrogen production

Exergy as a useful tool for the performance assessment of aircraft gas turbine engines: A key review

Exergy Analysis of Food Drying Processes

Global Warming

A new correlation for predicting the thermal conductivity of nanofluids; using dimensional analysis

Heat exchanger applications in wastewater source heat pumps for buildings: A key review

Advanced exergy analysis of an aircraft gas turbine engine: Splitting exergy destructions into parts

Avoidable and unavoidable exergy destructions of a fluidized bed coal combustor and a heat recovery steam generator

Techno-economic analysis of a stand-alone hybrid renewable energy system with hydrogen production and storage options

Advanced exergoenvironmental assessment of a building from the primary energy transformation to the environment

Comparison of exergoeconomic analysis of two different perlite expansion furnaces

Filter options

Publication date

Content availability

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Arif Hepbasli

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Content availability

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options