| Topic: | Re:Re:Link to "One Show" clip questioning choice of diesel for city use | |
| Posted by: | Tim Henderson | |
| Date/Time: | 17/01/14 18:18:00 |
| There is a report of a presentation given by Finn Coyle at a recent "Clean Bus Technology roadshow" that appears to been arranged to showcase the bus modifications : "Environmental Manager at TfL, Finn Coyle, made a presentation on the London transport authority’s experience with SCRT system retrofits. He said road transport is one of the biggest contributors of harmful NOx (Nitrogen Oxide) emissions in the city with buses one of the worst offenders. The kilometres these vehicles operate in London have increased dramatically since 1990 and as such there has been a significant rise in the amount of CO2 and NOx produced. Even with the introduction of Euro5 and EEV standard vehicles, still more needed to be done, as buses in the capital were not getting the engine heat required for SCR alone. Thanks to £10m of TfL and DfT funding to combat this rise in pollutants, the capital’s buses are being fitted with SCRT (Selective Catalytic Reduction Technology) systems. 600 have been fitted with the equipment so far, with 900 to be installed by March 2014. Eminox was chosen for this project, which saw them challenged with reducing NO2 and NOx from the city’s bus exhausts by 50%. The company trialled its system on Dennis Darts and Volvo double deckers at Millbrook on the MLTB (Millbrook London Test Bus) cycle and achieved reductions in those harmful emissions of up to 88%, comfortably beating this target. Finn said TfL rolled the technology out on routes where the NO2 emissions were highest and where the cause of it could be attributed to buses. There were 187 focus areas where it was introduced, with the worst route in terms of emissions receiving the SCRT units first. One of these was Putney High Street, where the project was deemed a success. Measuring before and after the roll out, it was found that it did indeed reduce emissions by 88%. Although a high area for emissions, Heathrow was not at the top of the list, considering that a lot of the pollutants in the area are generated by the airport. TfL’s roll out of this technology has seen some immediate effect with reductions already seen. However, pollutant levels have now been seen to creep up again. Finn said he is looking into why this is, working with the Kings College in London to investigate this. When asked what his guess for the cause of this is, Finn said, ‘It is very, very complicated to judge why. It might be different wind conditions or a number of other factors. I’ve got a meeting with Kings College to go through data in 2014.’" http://www.busandcoachbuyer.com/clean-bus-technology-roadshow/1/ I'm still waiting for the remote-sensing reports....... |