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k-289
Esteemed Advisor

Re: I'm not trying to be smart when I say, "when are you going to wise up?"

SO  the  EXPERTS  continue  down  the  yellow  brick  road .    Energy  Independence  was  the  theme,  then  the  Lone Star - ERCOT event  wakeup  call ,  soon  forgotten,  12  months  out .

Cooperate  Profiteering ,  with  a  dash  of  political  fund  raising  in- greed-iants ,  leaves  the  working  class  picking  up  the  tab ,  of  luxury  yacht  lifestyles  unblemished .  and  hamm  it  up,  preferred  stock  options ,   UNavailable  to  the  W-2  E$$ENT-SHALL  workers , which  are  rewarded  with  balloons , streamers , &  signs  only , and  $4+  gasoline - - -

Maybe,  retro-fitting ,  and  updating ,  the  coal  fired  generators  would  be  common  sensical , even  with  a  few  million$  of  budget$  handwringing   - - -              

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rickgthf
Senior Advisor

Re: Thermodynamic efficiency of gasoline engines

Wikipedia: Modern gasoline engines have a maximum thermal efficiency of more than 50%,[1] but road legal cars are only about 20% to 35% when used to power a car.

For example, our Volt consistently gets 45 mpg running entirely on gasoline because of its regeneration feature. Using the regeneration feature, the energy used to climb hills and accelerate the vehicle is recovered & stored in the battery even when using the gasoline engine.

  A gallon of gasoline is 120,000 BTUs.  That same car running entirely on electricity uses 10. 9 kwh to go 45 mi.  A kwh is 3412 BTUs.  3412 x 10.9 is 34,449 BTUs.  34,449/120,000 is 28%. 

  I stand by my 25% claim. 

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k-289
Esteemed Advisor

Re: Thermodynamic efficiency of gasoline engines

Wife's  hybrid  suv.  at  39/mpg ,  isn't ,  the  snickering  topic  of  conversation  during  the  last  few  days   - - -

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