1 distributed generation technologies exploring the opportunities presentation to singapore chapter ieee power engineering society 24 may 2005 professor saifur rahman director alexandria research institute virginia tech outline of understand global trends in greenhouse gas emissions impact electric on environment distribution as environmentally benign options 2 effect 50 incoming solar radiation reaches surface earth 90 infrared reflected by s is absorbed atmospheric trace gases these and clouds re emit this back ground short wavelength escapes long held will be 33 c cooler without 3 natural carbon dioxide co2 methane ch4 nitrous oxide n2o hydrofluorocarbons hfcs perfluorocarbons pfcs sulphur hexafluoride sf6 cycle 4 anthropogenic plants transportation direct industrial use 20 residential & commercial 12 one kwhr coal based electricity releases kg liter gasoline from manufacture consumption a vehicle 5 growth since revolution 1850
