Articolele autorului Francisc Popescu
Link la profilul stiintific al lui Francisc Popescu

Co-combustion of fossil fuel with biofuel in small cogeneration systems, between necessity and achievements

The paper focuses on the necessity of environmental protection through modern combustion facilities, that assure the thermal and electrical energy for small applications. It is known that air quality is depending on such pollutant sources, as well, especially because the exhaust source is at low level over the soil, and the dispersion of the pollutants are reduced. Using biofuels in addition to the fossil fuels, in special designed technologies,

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AIR POLLUTION LEVEL IN URBAN REGION OF BUCHAREST AND IN RURAL REGION

Interest in the urban challenges raised by the growing debates on sustainable development and global environmental change has increased very rapidly in recent years. The paper presents the air pollution level in two areas: urban and rural. The monitoring was made in the urban area Bucharest, more exactly a residential area Pipera between 05.05 - 07.05.2008 and in a rural area, Surlari Geomagnetic Observatory between 07.05 - 09.05.2008. We analyzed

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Procedure concerning the Mercury Removal from Municipal Waste Combustion Flue Gases

Since the climatic changes are more and more attesting that humanity is causing additional man made pollution, the concept of sustainable development imposes the necessity of selecting and applying the most appropriate and available novel energy resources, including application of technologies focusing on waste incineration. Using municipal wastes for energy production implies serious environmental problems, if no appropriate prevention cleaning

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Method for determination of an emission factor for a surface source

It is known that cross roads are intensively polluting surface sources, first of all because of the high intensity of traffic, but also due to the very slow velocities of the motor driving cycles that occur, disadvantaged also by the old status of the fleet. As result, high momentum values of NOx and CO are recorded. The development of a modern city, the traffic refreshment and the limitation of heavy trucks in the central area of a city that is

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IMPLEMENTATION IN THE ROMANIAN ENERGY INDUSTRY THE FLUE GAS WET DESULPHURISATION METHODS, DREAM AND REALITY

The integration of Romania in the European Union implies the reduction of the pollutant substance emissions, exhausted into atmosphere through the existent Power Plant stacks. The Governmental Decision no. 541/2003 and Directive 2000/80/EC establish the measures needed to limit the emissions of certain pollutants (sulphur dioxide, nitrogen oxides and dust) from burning of fossil fuels in large combustion plants. To reduce the SO2 emission, it is

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BIOGAS PRODUCTION FROM AGRICULTURAL RESIDUES. TEST RIG AND RESULTS

The use of renewable resources has evolved considerably in the last period of time, mainly because of the fact that those resources are inexhaustible and they can be found at lower prices on the market than the fossil fuels. From this category of resources, the biomass is one of the most important source of energy, being the first renewable resource that has been used to produce heat on the stair of human evolution. Currently, biomass is used only

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POST-COMBUSTION REMOVAL OF CARBON DIOXIDE FROM FLUE GASES

The primary aim of this study has been to analyze and describe the process of capturing carbon dioxide from the flue gas by means of chemical absorption. A 35 wt% aqueous monoethanolamine solution has been selected for removing CO2 from the flue gas stream. Separation of CO2 has been carried out in a packed bed absorber. Inlet flue gas CO2 concentration before absorption ranges from 15 to 20%. Secondly, the co-firing process of biomass with coal

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AMBIENT AIR QUALITY MEASUREMENTS IN TIMISOARA. CURRENT SITUATION AND PERSPECTIVES

The paper is an attempt to conclude over complex problems concerning air quality in the Romanian city of Timisoara, in an European perspective. The town is one of the most developed one in Romania, famous for its history and rapid progress into a modern but traditional location of human development. Air quality monitoring (AQM) is still new and less experienced in Eastern European countries. The article relates to the experience and results from

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ADVANTAGES IN THE USE OF BIODIESEL IN AN URBAN FLEET. CASE STUDY: MAJOR CROSSROADS IN TIMISOARA CITY

The paper shows the research and the scientific experience cumulated by the author in the frame of an international project done at T. U. Munchen, Germany, in which we have obtained the receipt to manufacture an alternative fuel-biodiesel-from animal fats with high FFA content (waste fats). In the past year, with the financial support of the Romanian government - CEEX programme -and RO-B.EN.A. we have succeeded to construct an experimental installation

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Biodiesel, waste fats transesterification. Reduction of the urban pollution thru the use of Biodiesel