Πλοήγηση ανά Θέμα "Carbon dioxide"
Αποτελέσματα 1-20 από 35
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Analysis of airflow through experimental rural buildings: Sensitivity to turbulence models
(2007)Full-scale experimental data and computational fluid dynamics (CFD) methods are used to determine the accuracy of four different turbulence models [standard k-ε, k-ε renormalisation group (RNG), k-ε realisable, Reynolds ... -
Calibration of a growth model for tomato seedlings (TOMSEED) based on heuristic optimisation
(2015)A mechanistic growth model for tomato seedlings cultivated in unheated beds is developed, based on modifications of existing tomato growth models. Photosynthetically active radiation at crop level, air temperature and CO2 ... -
Chronopotentiometric approach of CO2 reduction in molten carbonates
(2017)Carbon capture and valorization is a new route increasingly discussed to reduce greenhouse gas emissions. One of the paths foreseen for CO2 valorization is its transformation into fuels by electrochemical reduction of ... -
Copper oxide derived nanostructured self-supporting Cu electrodes for electrochemical reduction of carbon dioxide
(2019)Due to their unique activity towards formation of alcohols and hydrocarbons, copper (Cu) based catalysts have been widely used in the electrochemical reduction of carbon dioxide (ERCD). Cu foam naturally possesses ... -
Crude bio-glycerol aqueous phase reforming and hydrogenolysis over commercial SiO2Al2O3 nickel catalyst
(2016)In the present work, an one-pot Aqueous Phase Reforming (APR) and Aqueous Phase Hydrogenolysis (APH) of crude glycerol in a batch reactor containing commercial SiO2Al2O3 supported 65%Ni catalyst is performed. The effect ... -
Effect of Actual Recuperators’ Effectiveness on the Attainable Efficiency of Supercritical CO2 Brayton Cycles for Solar Thermal Power Plants
(2022)One of the most promising concentrated solar power technologies is the central receiver tower power station with heliostat field, which has attracted renewed research interest in the current decade. The introduction of the ... -
The effect of nano-sized Al2O3 and CO2O3 addition on the properties of fluorite-type ceria-based oxide composite electrolytes for SOFC applications
(2011)The present work focuses on the influence of nano-sized Al2O3 and Co2O3 addition on the microstructure, mechanical and electrical properties of the solid state compositions Ce0.8Gd0.2O2-δ, Ce0.8Sm0.2O2-δ, Ce0.8Sm0.1Nd0.1O2-δ ... -
Effect of vibrational degrees of freedom on the heat transfer in polyatomic gases confined between parallel plates
(2016)Conductive stationary heat transfer through rarefied nonpolar polyatomic gases, confined between parallel plates maintained at different temperatures, is investigated. It is assumed that gas molecules possess both rotational ... -
The effects of fiscal policy on CO2 emissions: Evidence from the U.S.A.
(2016)This paper examines the effects of fiscal policy on CO2 emissions using Vector Autoregressions on U.S. quarterly data from 1973 to 2013. In particular, we analyze the short- and mid-term interactions between fiscal policy ... -
Efficient carbon dioxide electroreduction over rationally designed heterogeneous Ag2S-Au nanocomposites
(2022)Electrochemical carbon dioxide reduction reaction (CO2RR) is regarded as an effective strategy to store abundant renewable energy and build a carbon neutral society. Gold (Au) and silver (Ag)-based catalysts for the effective ... -
Electrochemical reduction of carbon dioxide at nanostructured SnO2/carbon aerogels: The effect of tin oxide content on the catalytic activity and formate selectivity
(2017)Electrochemical reduction of CO2 has been considered as a promising method for the production of value-added chemicals. In this work, the electrochemical reduction of CO2 to formate is carried out over novel carbon aerogel ... -
Energy and CO2 emissions as the determinants of countries' productivity with different levels of economic development
(2017)In the present study, Data Envelopment Analysis (DEA) is used for the period spanning from 1980 to 2012 and for a total of 32 countries which are classified into four groups, according to their level of development ... -
Environmental assessment of precision farming techniques in a pear orchard
(2017)Pears require a substantial number of inputs for satisfactory yield and quality. High inputs increase costs, reducecompetitiveness and induce environmental problems. In thecurrent study the environmental profile of a pear ... -
Estimating the benefits of increasing the recycling rate of lamps from the domestic sector: Methodology, opportunities and case study
(2020)The scope of this paper is to identify the benefits of lamp recycling from the domestic sector. Data related to the recycled lamps was obtained from two recycling companies and were compared to those related to the waste ... -
Examining the linkages among carbon dioxide emissions, electricity production and economic growth in different income levels
(2021)Our industrialized world highly depends on fossil fuels to cover its energy needs. Although fossil fuels have been linked with economic growth, their use has also been found to have severe impacts on the environment. The ... -
Exploiting vehicular communications for reducing CO2 emissions in urban environments
(2013)In the overall effort of reducing CO2 emissions especially in large cities vehicular communications can play an important role. Intelligent transportation systems, which aim to use information and communication technology ... -
A Generalised Approach on Kerf Geometry Prediction during CO2 Laser cut of PMMA Thin Plates using Neural Networks
(2021)This study presents an application of feedforward and backpropagation neural network (FFBP-NN) for predicting the kerf characteristics, i.e. the kerf width in three different distances from the surface (upper, middle and ... -
Hydrogen production via aqueous - Phase glucose reforming: A thermodynamic approach
(2009)In the present work the thermodynamic analysis of aqueous - phase glucose reforming reaction has been studied. For the investigation purposes the temperature range of 0 - 100°C and atmospheric total pressure have been ... -
Hydrogenolysis of glycerol to propylene glycol by in situ produced hydrogen from aqueous phase reforming of glycerol over SiO2-Al2O3 supported nickel catalyst
(2016)In the present work, the reactions of glycerol's aqueous phase reforming (APR) and Aqueous Phase Hydrogenolysis (APH) in a batch reactor containing SiO2-Al2O3 supported 65% Ni catalyst are performed. The effect of: i) the ... -
Influence of building use on comfort and energy performance in offices
(2009)This paper investigates the influence of different building use by companies and individual occupants on thermal and visual comfort, energy consumption and CO2 emissions in mixed mode offices. Adaptive thermal comfort ...