[Land-speed] OT: Green House Gases.. and an Electrolysis Questionor 2..

[joseph lance]

Neil;

Good description of radiation wave lengths and the closed car or glass
greenhouse effect--they heat up inside mainly because there is no convective
heat transfer between the air in the enclosure and the air outside.

But the global warming "greenhouse" effect is a little different--there the
IR is absorbed by the CO2 molecules and the resulting excitation and
molecular collisions heat up the atmosphere. Still caused by IR but with a
different mechanism.  Maybe we could arrange a convective heat transfer
exchange with an outside planet...............(LOL).

Been talking with Mayf about electrolytic H2---did some Coulomb/Joule/Mole
calculations to prove (to myself) that making the stuff requires slightly
more electrical power than the resulting H2 is worth heating value wise. Not
a new or previously unknown result, but fun doing--nice thing about this
site is that it encourages me to limber up old skills and maybe ward off
Alzheimer's!!

Lance


----- Original Message ----- 
From: <neil at dbelltech.com>
To: <drmayf at mayfco.com>; "'LSR'" <land-speed at autox.team.net>
Sent: Monday, July 09, 2007 7:19 PM
Subject: Re: [Land-speed] OT: Green House Gases.. and an Electrolysis
Questionor 2..


> Mayf;
>
> I just got back from being out of town for a few days so maybe someone
> else
> has already answered this better than I can.
>
> The deal on CO2 heat gain is the same as leaving your car windows up in
> the
> sun-- the light from the sun has a large proportion of its energy at short
> wavelengths and that passes through the glass easily where it is absorbed
> by
> the car's interior. This heats up the dash, seats, etc to maybe 150F and
> these hot surfaces radiate their heat at a much longer wavelength (the
> peak
> wavelength of the radiation is dependent on the temperature of the
> surface--
> very hot = short wavelength and warm = longer wavelength). Long wavelength
> radiation is not transmitted easily by glass so there is a net gain in
> heat.
> Ditto for CO2.
>
> The sun's surface is roughly 6000F so it radiates visible light (some IR
> and
> UV, too) but a cool surface such as the human body radiates in the long
> infrared (about 5 to 15 microns).
>
> H2 & O2 are liberated by the number of Coulombs of energy you pass through
> the electrolyte. Coulombs are amps X seconds.
>
> Regards, Neil  Tucson, AZ