Fant 9759 publikasjoner. Viser side 21 av 391:
2003
Air Quality Impact Assessment, Kinyerezi, Dar Es Salaam, Tanzania. Phase II process update. NILU OR
Denne vurderingen av utslipp fra et planlagt forbedringsprosjekt for et kraftverk i Kinyerezi (Tanzania) er en oppfølging av vurdering i fase I, utført av NILU i 2012 (150 MW dual-fuel anlegg). Denne vurdering for fase II gjelder et naturgassdrevet kraftverk med totalt 8 generatorer og 345 MW. Konsentrasjonsutdelinger fra det planlagte kraftverket ble generert med TAPM (The Air Pollution Model), som brukte 2009 som studieperiode for å være sammenlignbar med vurderingen i fase I. Årlige CO2-utslipp er beregnet til 1,5 millioner tonn/år, som er 0,2% av de totale utslippene for hele landet i Tanzania. NOx -utslipp har størst innvirkning på lokalt nivå, med maksimumskonsentrasjoner (en-times) fra 10,7 til 33,2 ¿g/m3. Den gjennomsnittlige årlige konsentrasjonen er lav (høyeste er 1,4 µg/m3). Det planlagte kraftverket på Kinyerezi (alene) overstiger ikke lokale grenseverdier for luftkvalitet eller WHO retningslinjer.
2014
Air quality impact assessment, Kinyerezi, Dar Es Salaam, Tanzania. NILU OR
Concentrations of air pollutants from the 150MW Jacobsen Electro power plant planned for the Kinyerezi area near Dar Es Salaam, Tanzania has been estimated using two different dispersion models. The estimated annual average contribution to the ground level concentrations of NO2, SO2 , PM and CO is negligible compared to international and national standards. Only the highest one hour average concentrations may be of some concern.
The estimated absolute maximum hourly ground level concentrations of NO2 from the 150 MW gas fired power plant was found within about 2 to 3 km from the power plant. The maximum ground level concentration might reach 11 µg/m3 during very special meteorological conditions and wind from west.
Contributions to the ground level NO2 concentrations from the 150 MW power plant operated with Jet A1 liquid fuel is somewhat higher. It, however, never seems to exceed 32 µg/m3 (NOx as NO2) as a one hour average maximum concentration.
Over the city of Dar Es Salaam, about 15 km east of the plant site, the two plants will contribute during maximum conditions to about 12 to 20 µg/m3 NO2 .
The green house gas (GHG as CO2 equivalents) emissions will be less than 1 % of the present national emissions of GHG in Tanzania.
2012
Air quality impact assessment, Maria Gleta Power Plant, Benin. NILU OR
Concentrations of air pollutants from the 50MW Jacobsen Electro power plant in Benin has been estimated using two different dispersion models. SO2 emissions from the power plant operated with heavy fuel oil has proven to be the most critical option compared to national and international limit values. The SO2 concentrations will never exceed more than 37% of the national air quality limit values. For all other options, such as light fuel oil and gas, the concentrations will be less. Also the impact of NOx and PM10 will be relative to the limit values be less than for SO2. The CO2 emissions will represent less than 10 % of the national greenhouse gas emissions in Benin.
2011
2003
Air quality in 7 Norwegian municipalities in 2015. Summary report for NBV results.
This report documents the methodology used to compile air quality information for the year 2015 in seven Norwegian municipality areas under the first phase of development of the Norwegian Air Quality Planning Tool, also called “Nasjonalt Beregningsverktøy” or NBV. It follows a similar structure to and complements the final report entitled “Air quality in 7 Norwegian municipalities in 2015 – Summary report for NBV results” (NILU rapport 21/2017) where information on air quality in the seven main city areas in Norway was presented.
This report constitutes a user guide for the NBV-services, available at http://www.luftkalitet-nbv.no, in municipal areas. It provides recommendations on how to best use each product for air quality planning purposes and explains the main strengths and limitations of the results. The NBV air quality data for municipalities is subject to larger uncertainties than the data available for the main Norwegian city areas and this has to be taken into consideration when analyzing the results.
NILU
2018
Air quality in Europe - 2018 report
The current report presents an updated overview and analysis of air quality in Europe from 2000 to 2016. It reviews the progress made towards meeting the air quality standards established in the two EU Ambient Air Quality Directives and towards the World Health Organization (WHO) air quality guidelines (AQGs). It also presents the latest findings and estimates on population and ecosystem exposure to the air pollutants with the greatest impacts and effects. The evaluation of the status of air quality is based mainly on reported ambient air measurements, in conjunction with modelling data and data on anthropogenic emissions and their evolution over time.
European Environment Agency
2018