Richard
Any use of A/C needs powering and this power is taken from the car
engine so it is a no brainer...... if your car is hotter you run your
A/C more this power has to be taken from somewhere
if you have a parking lot you can open ONLY for white cars you might
in the longer term REDUCE local warming! not just in the cars!!!!!!
OR put a roof on it and make it LIGHT in colour!!! has to be for a house in CA
http://wiredgrove.blogs.com/whiteroofproject/2008/09/white-roof-cool.html
http://repositories.cdlib.org/cgi/viewcontent.cgi?article=6981&context=lbnl
According to Hashem Akbari, a physicist with the Lawrence Berkeley
National Laboratory, a 1,000-square-foot roof -- the average size on
an American home -- offsets 10 metric tons of planet-heating carbon
dioxide emissions in the atmosphere if dark-colored shingles or
coatings are replaced with white material.
Globally, roofs account for 25% of the surface of most cities, and
pavement accounts for about 35%. If all were switched to reflective
material in 100 major urban areas, it would offset 44 metric gigatons
of greenhouse gases, which have been trapping heat in the atmosphere
and altering the climate on a potentially dangerous scale.
Dr B
2009/3/20 Richard Darbera <[log in to unmask]>:
> Dear Colleagues,
>
> I am involved in the environmental appraisal of a parking lot project in a
> sunny country where all cars are equipped with air-conditioning systems.
> What would be the benefit of covering the parking lot in terms of fuel
> economy?
>
> To answer the question I am looking for any information comparing fuel
> consumption after parking for long enough in the sun vs. in the shadow.
>
> I would also be interested in the impact for car body colour (e.g. white vs.
> black) on fuel consumption when driving under the sun with air-conditioning
> switched on. Does it make any difference?
>
> Thanks in advance for any hint or reference.
>
> Richard Darbera
> Research fellow
> CNRS-LATTS
> Ecole Nationale des Ponts & Chaussees
> Cite Descartes
> 77455 Marne la Vallee
> France
> <[log in to unmask]>
> Mobile (for SMS only) 33,6,98222291
>
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