Carlos Herce

Carlos Herce
ENEA | ENEA · Energy Efficiency - DUEE-SPS-ESE

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24
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Publications

Publications (24)
Article
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External wall thermal insulation is one of the most effective solutions on the market to increase energy efficiency in the built environment. Off-Site Construction (OSC), through better control of the various parameters involved, can bring important advantages, such as the reduction of construction time, the improvement of product and process quali...
Article
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The importance of small- and medium-sized enterprises (SMEs) from economic, social, and environmental point of views and the crucial role of energy efficiency are widely recognized. However, the development of effective policies and their analysis are still challenging topics, for which research is relatively scarce. The main reasons for this are t...
Article
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The 25 million of European small and medium-sized enterprises (SMEs) represent 99% of businesses and account for the two thirds of total employment and a half of Gross Domestic Product. Thus, SMEs are considered as the backbone of European’ economy. The crucial importance of energy efficiency and its potential in SMEs is worldwide recognized. Howev...
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Cities are the engine of human development, and increasing urban sustainability is crucial to ensure human prosperity. The development of smart cities generally increases the sustainability of the cities. However, technical and environmental aspects are generally developed in smart cities neglecting socio-economic dimensions. The urban resilience c...
Article
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The lime industry is a highly energy intensive industry, with a huge presence worldwide. To reduce both production costs and pollutants emissions, some lime production plants are introducing more environmentally-friendly energy sources, such as local agro-industry residues. In this paper, a numerical tool is presented, which simulates a large-scale...
Article
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Petroleum products account for the 32.3% of worldwide primary energy. There are more than 100 oil refineries in Europe that directly employ 119,000 people with a turnover of EUR 600 billion and around 1.2% to the total value added in manufacturing. Therefore, the petroleum refining sector is very important in the European economy, and its decarboni...
Article
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In this work, a novel methodology to assess energy performance indicators of productive and economic sectors trough the analysis of the Italian mandatory energy audits database is presented. The updating of sectoral reference energy performance indicators is fundamental for both companies and policy makers—for the formers to evaluate and compare th...
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The implementation of monitoring tools and energy management systems (EnMSs) supports companies in their long-term energy efficiency strategies, and they are essential to analyse the effectiveness of energy performance improvement actions (EPIAs). The first fundamental step towards increasing energy efficiency is the development of energy audits (E...
Article
Ethylene is one of the most important building blocks of current chemical industry with a global production of 150 million tons in 2016. Most ethylene nowadays is produced via thermal cracking with steam of fossil feedstocks in cracking furnaces. This process accounts for approximately 8% of the petrochemical sector primary energy consumption makin...
Article
In order to ascertain the effects of the hydrogen addition and the primary air-fuel ratio on burner performance and emissions, we conduct tests on a commercial atmospheric gas burner using pure methane and a blend of hydrogen/methane. Relevant statistical image features are extracted from a UV–VIS camera equipped with narrow-band optical filters. R...
Article
Ethylene is one of the most important building blocks of current chemical industry with a global production of 150 million tonnes in 2016. Most ethylene nowadays is produced via thermal cracking with steam of fossil feedstocks in cracking furnaces. This process accounts for approximately 8% of the sector’s primary energy consumption, making it the...
Article
Sorption-Enhanced Steam Methane Reforming (SE-SMR) is a promising technology for effective production of hydrogen with simultaneous CO 2 capture from conventional fuels (e.g. methane, coal) and alternative fuels (e.g. biomass). SE-SMR combines steam methane reforming reaction and water-gas shift conversion reaction with a high temperature CO 2 sorp...
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Co-firing coal mine discards with coal in pulverized fuel burners of the current power plants would be a promising way both to reduce the environmental impact of coal production and to energy valorize such residues, with an acceptable economic investment. Changes in fuel blends bring along alterations in flame dynamics and structure which must be c...
Article
Sorption-Enhanced Steam Methane Reforming (SE-SMR) represents a novel and energy-efficient hydrogen production route with in situ CO2 capture. A comprehensive Eulerian-Eulerian CFD model of SE-SMR in a bubbling fluidized bed reactor, that uses dolomite and other solid sorbents as CO2 acceptors, has been developed. Kinetic models for steam methane r...
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Free dowload until October 29, 2017: https://authors.elsevier.com/c/1Vhdl1H~cz-x6J Millions of tonnes of coal mine waste residues are piled up in dumping sites, causing serious environmental problems. Co-combustion in fluidized bed facilities is the most widespread alternative for the energy utilization of these by-products. However, no experience...
Chapter
In this work, a detailed model of a real NPK fertilizer plant has been developed to optimize operation strategies, in order to reduce sensibly the thermal and electrical consumptions, as well as the recycle ratio. Granulation is a very complex process that involves changes in the particle properties and depends on several factors as drum speed and...
Article
Pyrolysis is a fundamental step in thermochemical processes of biomass materials, so a suitable kinetic model is an essential tool to predict the evolution of the resulting products of reaction. However, many difficulties arise in modeling this process step due to the very high number of the involved reactions. In this work, a new double-Gaussian d...
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The high-temperature, solid chemical looping for CO2 capture is a promising technology to mitigate greenhouse gases emission. The choice of a high-performance sorbent is a fundamental need to improve the CO2 uptake in solid regeneration systems. Calcium-based sorbents have demonstrated a good compromise between cost, performance and environmental i...
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Full-text available
Coal gasification and combustion are strongly dependent on devolatilization step. Aim of this work is to obtain the parameters of global kinetics of devolatilization of a sub-bituminous coal with high sulfur content. The kinetic parameters are obtained by means of TG experimental data, and applying different approaches to extrapolate the data to in...
Article
CO2 capture by solid sorbents through uptake–regeneration cycling is a promising option for high temperature removal of CO2 from combustion gases and synthesis/fuel gases. The present study investigates the influence of regeneration atmosphere and temperature on the CO2 uptake capacity during repeated cycling of CaO-based solid sorbents. The sorben...
Article
Understanding and modeling of coal pyrolysis assume particular importance, since it is the first step of combustion and gasification processes. The complex reactions occurring during pyrolysis lead to difficulties in the process modeling. The aim of this work is to find a global kinetic model that well represents the pyrolysis of two different coal...
Article
In this work, a CFD numerical study of co-firing coal and cynara in a 350 MWe utility boiler is presented. The most influent operational factors related to the biomass feeding conditions such as biomass mean particle size, level of substitution of coal by biomass and feeding location in the furnace, are analyzed, determining their influence in the...

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