[Info-vax] Intel junk...Kernel-memory-leaking Intel processor design flaw forces Linux, Windows redesign

[Jan-Erik Soderholm]

Den 2018-01-08 kl. 21:56, skrev Scott Dorsey:
> Bill Gunshannon  <bill.gunshannon at gmail.com> wrote:
>>>
>>
>> Try tracing the power from the battery in the car all the way back
>> to it's origination.  Take all the "efficiencies" into consideration.
>> Now tell me how wasteful the gasoline engine really is.
> 
> It's not bad.  Depending on where you are, you can figure the overall
> loss between the plant and your doorstep to be between 10% and 15%.
> (Mind you if you live in some place like Hawaii where the grid is rather
> small, it can be better than that).
> 
> Efficiency of the power plant itself isn't so good, it's on the order
> of a 35% loss on the average.

A water powered electrical station has an average loss of 10%.
A coal powered electrical station has an everage loss of approx 60%.

> Can be better in some places, worse in others
> but that's about typical for coal or gas fired systems.  (Now, if you live
> in someplace like Hawaii it's worse than that because you have to take into
> account the waste in getting the coal out to you which is pretty substantial
> in such places.)
> 
> Efficiency of the motors is very close to 100%.  I don't know what the
> efficiency of the battery is and that could be a big issue although that's
> a thing that is still improving.
> 
> Figure typical gasoline engines have maybe 10% to 30% efficiency.  Again that
> is a ballpark number... you can guarantee that an Olds 442 in stop and go
> traffic isn't going to get anything like that, and you might do better than
> that on the highway with a small modern engine.
> 
> But I'm thinking if you did the math more precisely it would tend to be a
> tossup.
> --scott
>