Christopher J. Koroneos

National Technical University of Athens | NTUA · Unit of Environmental Science and Technology (UEST)

A great number of islands are dispersed across the Aegean Archipelagos, most of which have restricted water resources, affecting in this way the economic growth of local societies. To confront this issue, the solution addressed by the relevant stakeholders is the particularly costly and of questionable quality process of potable water transportatio...

The rapid development of the touristic sector that occurred during the last years as also the absence of a central plan for the available water resources efficient and rational management, in combination with the usually low rainfall levels in the Aegean islands, have contributed to water scarcity issues that characterize the majority of the Archip...

Τhe problem of the deterioration of the human environment and natural resources and its consequences for economic and social development have received great interest over the past few decades. To facilitate sustainable development, it has become imperative to manage the use of resources in an environmentally conscious manner. To this end, life cycl...

The purpose of the study is to perform an integrated life cycle sustainability assessment of the Greek interconnected electricity system. Fifteen life cycle sustainability indicators were used to evaluate the electricity options that are currently operational to account for the environmental, economic and social dimension of an integrated sustainab...

Peach production as well as the fruit canning industry is one of the most important agricultural supply chain sectors in Greece. In 2016 Greek canned peach production reached 300,000 tones. In this study we perform an environmental analysis of a peach compote production system in Greece, using Life Cycle Assessment. The system studied includes the...

The importance of investigating both energy and exergy flows for assessing the environmental profile of buildings has long been acknowledged. Nevertheless, although an ample number of standalone case studies have performed energy analyses in the hospitality industry, empirical studies focusing on exergy are scarce. Extending this line of research,...

The exergy analysis method constitutes an alternative but very important technique for the evaluation of the utilization level of thermal plants as well for the comparison of different conversion processes. The loss of exergy provides a figure of merit for the inefficiencies of a process and a measure of the quality of the different forms of energy...

Greece recorded a significant decline in CO2 emissions from energy use from 2003 to 2013, accompanied by a reduction in energy consumption, particularly during the economic recession. This study attempts to identify the driving forces of CO2 emissions related to energy consumption, through the use of the complete decomposition technique developed b...

Hydrogen is an important energy carrier which could play a very significant role in the reduction of emissions of greenhouse gases. The route by which hydrogen is produced is the determining factor for its environmental performance. Hydrogen can be produced through methane reforming, coal gasification or through the electrolysis of water with the u...

Electrifying transportation is a promising approach to alleviate climate change issues arising from increased emissions. This study examines a system for the production of hydrogen using renewable energy sources as well as its use in buses. The electricity requirements for the production of hydrogen through the electrolysis of water, are covered by...

The technical and environmental performance of a ground source heat pump system (GSHP) is examined using the method of Life Cycle Assessment (LCA). The present LCA study quantifies the environmental impacts of the installation of a ground heat exchanger based system of the Town Hall of Pylaia in Thessaloniki, Greece. The study examines the manufact...

Mobility plays a crucial part of our life. Alternative fuels and vehicle technology can mitigate climate change and greenhouse gases from road transport. This study analyses power-train deployments scenarios for the vehicle fleet of the city of Athens until 2021, taken into consideration European policy developments on vehicle CO2 emissions and tec...

The transportation sector is one of the largest sources of EU’s greenhouse gas emissions. In 2011, transportation represented approximately 25 percent of total EU’s greenhouse gas emissions. Urban mobility accounts for 40% of all CO2 emissions of road transport and up to 70% of other pollutants from transport. As, transportation and mobility play a...

Islands present sustainable energy growth challenges due to a number of reasons such as remoteness, limited energy resources, vulnerability to external events and strong dependence on international trade agreements. In particular, the Dodecanese Islands of the Aegean Sea cover their electricity needs mostly on the basis of autonomous conventional s...

The increasing rate of energy consumption, the depletion of conventional energy sources and the environmental degradation caused has led to thorough research on Renewable Energy Sources (RES), which have been seen as a sustainable solution to climatic change. However, RES installation has a considerable environmental impact, which should be taken i...

Lignite is by far the most used fuel in Greece for the production of electricity as there are large reserves in the country. The high emissions of global warming gases have led to the need for the adaptation of measures and initiatives to reduce emissions in the Greek energy system for the period up to 2030. It is imperative that an environmental p...

The need to tackle climate change has pushed the cultivation of energy crops for the production of biofuels to the top of the global agenda. While biofuels produced from energy crops are useful for the reduction of greenhouse gases (GHGs), energy crops per se constitute a farming system that contributes to GHG emissions. The agricultural sector, en...

The transportation sector accounts for approximately one-fifth of global primary energy use and one quarter of all energy related carbon dioxide emissions, with nearly half of those emissions originating from passenger vehicles. In order to reduce significantly the use of fossil fuels in urban mobility, whilst improving air quality and increasing t...

Transport is the second largest single source of greenhouse gas emissions in Europe. It is estimated that 40% of all CO2 emissions of road transport and up to 70% of other pollutants are coming from transport. Biofuels can play a significant role in the reduction of these emissions. This study investigates the possibility of biofuels penetration in...

Transport is the second largest single source of greenhouse gas emissions in Europe. It is estimated that 40% of all CO2 emissions of road transport and up to 70% of other pollutants are coming from transport. Biofuels can play a significant role in the reduction of these emissions. This study investigates the possibility of biofuels penetration in...

The increasing rate of energy consumption, the depletion of conventional energy sources and the environmental degradation caused has led profound scientific circles to conduct a thorough research in order to find even more environmentally friendly energy resources. Since then, Renewable Energy Sources (RES) have been seen as a sustainable solution...

Nowadays, the intensive use of natural resources in order to satisfy the increasing energy demand suggests a threat to the implementation of the principles of sustainable development. The present study attempts to approach thermodynamically the depletion of natural resources in the methodological framework and the principles of life cycle assessmen...

In the current paper, the wind potential of a relatively flat area in central Peloponnese in Greece has been studied. The chosen region was selected based on environmental criteria and the wind speed was correlated based on the measurements of three specific mountainous sites in the wider plateau area using a Wind Resource Analysis (WRA) modeling m...

The increasing concerns regarding the environmental pollution derived from anthropogenic activities, such as the use of fossil fuels for power generation, has driven many interested parties to seek different alternatives, e.g. use of renewable energy sources, use of “cleaner” fuels and use of more effective technologies, in order to minimize and co...

Smart energy regions are defined as regions that offer maximal quality of living to their inhabitants with a minimal consumption of energy by intelligently joining of infrastructure (energy, mobility, transport, communication, etc.) on different hierarchical levels (building, district, city). The development of insular energy systems into smart ene...

In the energy area, intensive efforts are being made over the last years to bridge the supply area with renewable energy sources and the demand side with energy conservation. Energy recovery from muni-cipal solid waste landfills can play a contributing role in the solution of problems of both waste manage-ment and energy areas. The objective of thi...

Approximately 45.43 GWh per year of electricity can be covered from low-enthalpy geothermal energy resources (LEGERs). In particular, 10% of the electricity demand can be covered from the LEGER N. Kessani (NK). The needs for LEGER contribution were increased when wind turbine (WT) production was low. In winter, where there is abundance of wind, LEG...

Buildings contribute almost half of the world’s carbon dioxide (CO2) emissions. Energy and water consumption are some of the largest and fastest growing pressures on the global environment. The use of energy is mainly attributed to the heating and cooling of buildings. The type of materials used in the construction of buildings plays a significant...

Sustainable Development (SD) is a very commonly used phrase in the political agenda of all European countries and in the bussiness agenda of many corporations. SD as it has been defined my the Brundland report, is not a luxury anymore, it has become a necessity for our planet to keep its existence as we know it. It is necessary to apply various pol...

The Objective of this work is to present an overview of desalination technologies that can be powered using renewable energy and to compare them thermodynamically on their performance. The performance of the systems is directly related to the economic cost and the environmental impact. Currently, the majority of large-scale desalination plants in t...

The efficient use of renewable energy sources (RES) is one of the major issues in the modern energy sector. The objective of this work was to examine the potential of wind energy, solar energy (e.g., photovoltaics), and biomass energy sources to meet the current energy use in the island of Lemnos in Greece. An optimization methodology was applied t...

Energy plays a key role in the development of industrial and post-industrial economy. The growth of gross domestic product ( GDP) is in line with the growth in energy use. Because the amount of energy used comes overwhelmingly from hydrocarbons, it creates a huge problem with the greenhouse gas emissions. In recent years due to the economic crisis,...

Integrated product policy (IPP) is an initiative at the European Union (EU) level aimed at reducing the environmental burden of products and services throughout their life cycles by using a toolbox of policy instruments to ‘green’ markets through ‘greening’ both the demand side (consumption) and the supply side (product development). IPP is part of...

Reverse osmosis, distillation, and heat desalination processes were analyzed using the first and second-laws of thermodynamics with particular attention to the minimum separation work requirement and the flow exergy. Desalination methods are divided in two categories: Those that require kinetic energy (Reverse Osmosis) and those that require heat e...

Greenhouse gases (GHGs) emitted by road transport vehicles as a direct result of fossil fuel combustion and other environmental pollutants released throughout the life cycle of petroleum based fuels, encourage a shift towards alternative transport fuels. Within this frame, aν environmental assessment was performed so as to evaluate the environmenta...

The energy produced from biomass is recognized as a renewable energy source with high potential for sustainable development in the near future. Biomass already provides 14% of global primary energy production, however, much of the energy is lost due to inefficient use of unsustainable exploitation. The utilization of the total potential energy prov...

The continuous increase of production and consumption of material in the developed world and the increase of the standard of living of the developing countries leads to the increase of the use of natural resources and the degradation of the environment. Life Cycle Thinking (LCT) is essential to sustainable consumption and production which will impa...

The geothermal energy that is stored in the earth is so vast that could supply all the energy needed by humanity. The difficulty in tapping this energy lies in its diffusivity. The geothermal energy in regions near volcanoes is close to the surface and easy to use economically. In this paper a vapour dominated system will be examined. The electrici...

The geothermal energy that is stored in the earth is so vast that could supply all the energy needed by humanity. The difficulty in tapping this energy lies in its diffusivity. The geothermal energy in regions near volcanoes is close to the surface and easy to use economically. In this paper a vapour dominated system will be examined. The electrici...

The words “Sustainable Development” are frequently used by very lightly, to the extent that they have lost their meaning. There is a presumption that for any perspective analysis or any development proposal, these two words are the most appropriate. Sustainability has been incorporated in the objectives of many studies. The historical model of indu...

The technical and environmental performance of a solar water heater (SWH) is examined using the method of life cycle assessment (LCA). The present LCA study quantifies the environmental benefits of the installation of a SWH with electricity as auxiliary for domestic use in the city of Thessaloniki. Solar thermal heating produces no emissions during...

The objective of this work is the application of the exergy analysis to the building sector and the introduction of suitable exergy indicators. The indicators are tools which are representative of the system under study and provide reliability over time, information to policy makers and awareness of potential environmental problems arising from hum...

The Greek energy system is one of the most carbon intensive energy systems in Europe. Hydrocarbons and solid fuels (lignite) cover over 80% of the final energy demand. The main objective of this work is to build energy scenarios for the future – with a focus on the electricity production system – and explore how these scenarios are reflected in eco...

The serious environmental degradation of our planet in the past century and the limitation of supplies of conventional fuels have led humanity to search for new energy forms. The housing sector has a big environmental impact and it makes a good candidate for changes to be implemented in order to make steps towards a sustainable society. This study...

Global carbon dioxide (CO2) emissions reached an all-time high in 2010, rising 45% in the past 20 years. The rise of peoples’ concerns regarding environmental problems such as global warming and waste management problem has led to a movement to convert the current mass-production, mass-consumption, and mass-disposal type economic society into a sus...

Hydrogen is an important energy carrier which could play a very significant role in the reduction of emissions of greenhouse gases. The route by which hydrogen is produced is the determining factor for its environmental performance. Hydrogen can be produced through methane reforming or through the electrolysis of water with the use of electricity o...

The energy fuels used for in the Greek transport sector are made up of gasoline consumed by automobiles, diesel oil consumed by taxis, trucks, maritime transport and railroads, and jet fuel used in the aircrafts. All these fuels are hydrocarbons that emit great amounts of CO2 which has a major impact in the global warming phenomenon. The issues rel...

Society's attitude toward seismic risk, in the last few years, has evolved from fatalistic to proactive. This paper presents an approach in the area of seismic risk management. The objective is to implement a methodology in a seismic prone area in an earthquake risk management framework, based on the case study of the island of Lefkada. A tool to a...

Hydrogen is an important energy carrier which could play a very significant role in the reduction of emissions of greenhouse gases. The route by which hydrogen is produced is the determining factor for its environmental performance. Hydrogen can be produced through methane reforming or through the electrolysis of water with the use of electricity o...

The main objective of this work is to utilize the existing geothermal potential of the Greek island of Nisyros located in the southeastern part of the Aegean Sea for desalination of seawater. The technology most applicable for the exploitation of geothermal purposes is the multiple effect distillation process (MED). The exploitation of the geotherm...

An exergoenvironmental analysis is conducted at the component level of a system and identifies (a) the relative importance of each component with respect to environmental impact, and (b) options for reducing the environmental impact associated with the overall system. In an exergoenvironmental analysis a one-dimensional characterization indicator i...

In the present paper the mismatch between the energy supply levels and the end use, in a broader sense, was studied for the Hellenic energy system. The ultimate objective was to optimize the way to meet the country's energy needs in every different administrative and geographical region using renewable energy sources (RES) and at the same time to d...

There has been a consensus developed among climate scientists that the world is warming alarmingly and that human activity is playing the major role. Most of the global warming gases originate at the electricity production systems and the fuels used for transportation. Humanity requires an energy system that can provide a high standard of living fo...

An exergoenvironmental analysis is conducted at the component level of a system and identifies (a) the relative importance of each component with respect to environmental impact, and (b) options for reducing the environmental impact associated with the overall system. In an exergoenvironmental analysis a one-dimensional characterization indicator i...

Transport is the second largest single source of greenhouse gas emissions in Europe and is rising rapidly. Urban mobility accounts for 40% of all CO2 emissions of road transport and up to 70% of other pollutants from transport. At the same time, transportation and mobility are an important part or urban economics and the quality of life. The issues...

The wind potential around mountain Parnassus in central Greece has been studied and an experimental analysis has been presented which could be used as a wind farm sitting selection tool aiming at maximization of the production output. Different wind sites within Fokida prefecture were studied based on field measurements around the large mountainous...

In a previous work we studied, according to LCA methodology, the environmental impacts which are connected with the life cycle of corrugated cardboards. Cardboards recommend the most widely spread packaging material and present the higher utilization rate between the paper products. We have focused on the assessment of environmental impacts that ar...

Thermal methods (incineration, gasification, pyrolysis, plasma technology) applied for the purpose of waste management, have the potential for energy recovery and the minimization of environmental impacts such as air emissions and solid residues. Thermal recovery from waste is being encouraged by the EU with the provisions of the Directive 2008/98/...

The development of the construction, today’s largest industrial sector in Europe, requires its consistency with International and European standards, mostly in relation with the environment. The sustainable construction is expressed, today, by the European strategy: reduction of life cycle costs, delivery time, energy consumption, raw materials and...

n this work, the potential of the increase in exergy and energy efficiency of the Greek construction and Food, Drink and Tobacco (FDT) industries has been examined using energy and exergy analysis methodology. These two industries play a vital role towards sustainable development of the country. The continuous increase in energy use in these two in...

Equilibrium modeling has been used to predict the composition of the fuel gas produced in a downdraft gasifier for cotton stalks biomass at 800°C with the moisture content from 0 to 30%. The calorific value of the fuel gas has been determined. The predicted values are in good agreement with the experimental data. The moisture content in the cotton...

The utilization of wind energy has been the outmost energy objective of many countries in the EU in the past two decades. The low value of its reliability factor constitutes the biggest drawback for its use. The instability of wind speeds may lead to over-production of electricity from wind power generators at one time, and lack of production to sa...

Natural gas (NG) has been penetrating the Greek energy market in the last few years. The first electricity production plant using NG in Greece was built in the city of Lavrion, South of Athens. This power plant uses combined cycle and has a capacity of 174 MW. The application of the life cycle analysis (LCA) tool enables us to perform a quantitativ...

Over the years considerable research has been conducted on masonry mortars regarding their compatibility with under restoration structures. The environmental dimension of these materials may sometimes be a prohibitive factor in the selection of these materials. Life Cycle Assessment (LCA) is a tool that can be used to assess the environmental impac...

The energy use in the building sector for space heating, cooling and water heating, in the European Union Based, reaches the level of on 40% of the total used energy. The building sector is the biggest user of energy, having surpassed the transportation and industry sectors. Additionally, the energy transformation processes and the use of energy ar...

Carbon sequestration refers to the provision and safe storage of carbon dioxide that otherwise would be emitted to the atmosphere. The basic idea is the retention, isolation, and final storage of the produced carbon dioxide, utilizing biological, chemical, or mechanical routes. Some methods retain the carbon from the exhaust gas before it is emitte...

Energy requirements in Greece have been continuously increasing in the past three decades. The share of renewable energy sources use has not kept up with the increase in energy demand. As a result more and more conventional energy sources are used and in this case lignite which is an indigenous source of energy and natural gas, imported from Russia...

Greece's current solid waste management system faces important environmental challenges that make it non-sustainable. There is a need to move towards an integrated solid waste management that shall include systems in the frames of 'sustainable development' approach. An optimisation methodology is applied in Greece, where various Renewable Energy So...

Exergy analysis is being used to investigate different design schemes of a power plant in Crete, Greece in two parts. The following cases are analyzed: 1) installation of a steam turbine unit that will utilize heavy fuel oil as fuel, 2) installation of a gas turbine unit that will utilize diesel oil, 3) installation of a 95 MW diesel power plant th...

This article constitutes a continuation of “Exergy analysis for a power plant alternative designs, Part I.” In this article the analysis of the 95 MW cogeneration unit is performed and a comparison between the existing unit and the proposed cogeneration unit is made. The analysis and the comparison will be based on fuel cost, operation and maintena...

The present work deals with the energy end exergy analysis of a system which includes photovoltaic panels providing electricity to a bakery oven. The photovoltaic system (PV) on the bakery unit serves as a model for the installation of PV systems in urbanized areas, which could play a major role in the energy self sufficiency, while at the same tim...

In the present paper, the wind potential of Central Peloponnese in Greece has been studied and the Exergy Analysis methodology was implemented as a wind farm sitting selection tool. The wind speed of the chosen regions of Central Peloponnese was studied and correlated based on the measurements of three specific sites in the wider area using a softw...

1. Introduction Energy consumption in European domestic and tertiary sectors represents about 40% of the annual EU-15 final energy use and about a third of greenhouse gas emissions. Among these, about two-thirds are concentrated in residential sector, the remaining part in commercial building. The household sector represents about 70% of total ener...

The environmental impacts as result of a motorway construction vary according to the plurality of tasks and the acquisition of the materials. In order to allocate those impacts we applied the Life Cycle Analysis (LCA) method in the construction and maintenance of a motorway in Greece. Actual data were used, from constructing the first free motorway...

Energy consumption in buildings vary significantly, depending on factors as the use of the building, the construction type, maintenance, existing heating, cooling and lighting systems and other types of services. Hotel buildings have high energy consumption rate, as a result of their unique operational characteristics. Energy consumption in hotels...

A growing number of regulatory interventions such as the European Union’s Extended Polluter Responsibility Policy hold manufacturers accountable for the damage inflicted to the natural environment by their products. However, not all components of an industrial product have an equitable role regarding their overall burden to the environment. In this...

The sector of Renewable Energy Sources (RESs) is growing very fast, with many innovations and applications becoming a reality. The continuous reduction of natural resources has forced all policymakers to turn to alternative energy sources. The total energy (oil and electricity consumption) consumed in the prefecture of Lasithi during the years 1997...

The sector of Renewable Energy Sources (RESs) is growing very fast, with many innovations and applications becoming a reality. The continuous reduction of natural resources has forced all policymakers to turn to alternative energy sources. The total energy (oil and electricity consumption) consumed in the prefecture of Lasithi during the years 1997...

The basic targets of the modern cement and concrete production industry are the reduction of energy costs and minimisation of environmental effects. Life Cycle Assessment (LCA) is a useful tool for the evaluation of the environmental performance of a production system. The objective of this work is to provide a very clear analysis and quantificatio...

The use of hydrogen as an alternative fuel is gaining more and more acceptance as the environmental impact of hydrocarbons becomes more evident. Hydrogen production is accomplished by steam reforming of natural gas and other fossil primary energy at approximately 97% of total. Thus, less than 3% is based on renewable energy sources. This work prese...

The aim of the present research work is to investigate the possibility of adding steel slag, a by-product of the conversion of iron to steel process, in the raw meal for the production of Portland cement clinker. Two samples of raw meals were prepared, one with ordinary raw materials, as a reference sample ((PC)(Ref)), and another with 10.5% steel...

The gas turbine based power plant is characterized by its relatively low capital cost compared with the steam power plant. It has environmental advantages and short construction lead time. However, conventional industrial engines have lower efficiencies, especially at part load. One of the technologies adopted nowadays for efficiency improvement is...

Transport is of fundamental importance to human society, providing mobility and facilitating industry and trade. Nevertheless there are also many environmental impacts; thus it is crucial that transportation planning is carried out in a sustainable manner meeting optimum travel needs, promote economic prosperity and environmental preservation. In a...

Renewable energy sources are becoming more and more attractive solutions for clean and sustainable energy needs. The innovation and diffusion of renewable energy technologies can play a major role in the mitigation of climate change. Geothermal energy utilization has a great variety, from residential heating to electricity production, and it is so...

Economic and environmental considerations dictate the need for improved fuel utilisation in thermal power stations. To meet this goal, a design project was undertaken to assess the suitability for Combined Cycle application of different Gas Turbine (GT) cycles: Simple, Intercooled, Reheated, Intercooled/Reheated, Intercooled/Reheated/Regenerative c...

In the present paper, the potential of the Greek building sector is examined using the energy and exergy analysis methodology. The building sector can play a crucial role in the efforts towards sustainable development. The building sector plays a significant role in the Greek economy as it engages more than 310,000 employees and 32,500 engineers (2...