Posted by Bob Myers on March 27, 2009, 2:44 pm
Turby wrote:
>>
>> As if their bankrupt state hasn't enough problems rather than worry
>> about the color of something. The term "Cool Paint" in the PDF
>> link is interesting. Next will be dark colored houses, buildings,
>> roofs.
>>
>> The "all white" state.
> What about the people who live in the mountains where it's cold? They
> need the black to absorb heat.
I thought about that when I first read this one, but I realized that
for cars - and ONLY cars - you CAN make a somewhat-
rational argument for the "lighter paint" move. It doesn't cost
anything extra in emissions to heat a car - those heaters are running
off waste heat from the engine anyway. But cooling one via the
AC *is* an additional load on the engine, hence an increase in
emissions. I would think that compared to other things they could
be doing to increase average fuel economy, this one's WAYYYY
down the list and so is silly. But at least it does make a little teensy
bit of sense in this one area.
Bob M.
Posted by J. Clarke on March 27, 2009, 7:33 pm
Bob Myers wrote:
> Turby wrote:
>>>
>>> As if their bankrupt state hasn't enough problems rather than worry
>>> about the color of something. The term "Cool Paint" in the PDF
>>> link is interesting. Next will be dark colored houses, buildings,
>>> roofs.
>>>
>>> The "all white" state.
>>
>> What about the people who live in the mountains where it's cold? They
>> need the black to absorb heat.
> I thought about that when I first read this one, but I realized that
> for cars - and ONLY cars - you CAN make a somewhat-
> rational argument for the "lighter paint" move. It doesn't cost
> anything extra in emissions to heat a car - those heaters are running
> off waste heat from the engine anyway. But cooling one via the
> AC *is* an additional load on the engine, hence an increase in
> emissions. I would think that compared to other things they could
> be doing to increase average fuel economy, this one's WAYYYY
> down the list and so is silly. But at least it does make a little
> teensy bit of sense in this one area.
Except what percentage of the thermal load is through the glass as opposed
to through the paint? The pols, if they are going to whine about greenhouse
gases really should learn about the greenhouse effect, a parked car of any
color being a shining example of it.
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>> As if their bankrupt state hasn't enough problems rather than worry
>> about the color of something. The term "Cool Paint" in the PDF
>> link is interesting. Next will be dark colored houses, buildings,
>> roofs.
>>
>> The "all white" state.
> What about the people who live in the mountains where it's cold? They
> need the black to absorb heat.