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Hydrogen Fuel Cell Vihicle Essay

757 words - 4 pages


May 16, 2007 

By John Shears  Research Coordinator

Center for Energy Efficiency and Renewable Technologies (CEERT)  rd  1100 Eleventh Street * 3  Floor * Sacramento CA 95814 * (916) 442‐7785 


INTRODUCTION  The world’s leading climate experts have now declared that  human activities — predominantly due to our use of fossil fuels  1  — are unequivocally accelerating global warming.  They also  warn that, in order to avoid the most devastating consequences  ...view middle of the document...

  To  help position hydrogen and fuel cells in the discussion, this  discussion­brief provides an overview of some of the major  approaches and the role that each can play in achieving  maximum long­term GHG emissions reductions.  OPTIONS TO REDUCE  CARBON FOOTPRINT OF VEHICLES  The diverse options being pursued to reduce GHGs from  vehicles include low carbon bio­fuels; flexible fuel vehicles;  compressed natural gas vehicles; hybrid electric vehicles (HEV);  plug­in hybrid electric vehicles (PHEV); all­battery electric  vehicles (BEV or EV); and hydrogen fuel cell vehicles (FCV).  Each has a role to play but only one appears poised to provide a  comprehensive solution for the long­term stabilization and  reduction of GHGs. 

Modified From: Pacala,S. and R. Socolow,  AUGUST 13, 2004.  Stabilization Wedges: Solving  the Climate Problem for the Next 50 Years with  Current Technologies., Science Volume 305, pp  968­972 (Part of the Special Section on the  Hydrogen Economy). 

Greenhouse Gas Emissions Wedges:  A Slice of the Global Warming Pie. 
(A) GHG emissions under business as usual (BAU  – green area) are projected to double from 7 billion  tons per year (GtC/y) today to 14 billion tons per  year by mid­century. Climate scientists are urging  that CO2 emissions must be stabilized if  concentrations are not to exceed 500 ppm (blue  area) in order to avoid dangerous climate change.  (B) A schematic representation of (A).  The  increased emissions are represented as a triangle ...

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