Re: Global dimming masking greenhouse effect

jimp_at_specsol-spam-sux.com
Date: 01/19/05 

Date: Wed, 19 Jan 2005 03:59:19 +0000 (UTC)

In sci.physics Edward Green <spamspamspam3@netzero.com> wrote:
> jimp@specsol-spam-sux.com wrote:

> > Waffle?

> Sorry. Overly harsh. Perhaps "light crispy wafer". :-)

> > OK, how's this?

> <see previous post for details>

> Experiment? Whoa. Heavy!

> I have a few problems with your proposal: for one thing, I don't see
> how we are to control for variations in relative humidity and air speed
> in the oven vs. outside; for another, it will be difficult to regulate
> the temperature of a household oven that finely; and for yet another,
> I'm not sure I see the point of including the semi-closed bottle: yes,
> trapping of air and increased humidity over the water will slow
> evaporation, and I'd then expect net evaporation to be rate-limited by
> diffusion or mixing at the bottle mouth. In other words, I'm fairly
> sure you are right a priori about the insigificance of illumination in
> this case (and while removing the over light was a nice touch, I
> wouldn't expect that little bulb to do jack).

The more I thought about it, the more problems I came up with.

The semi-closed bottle was for mitigating wind effects, and you probably
can't get an oven that close.

So, I was in the garage looking for pieces for a household repair and
noticed some copper stock I've been saving.

Take a 5/16 X 4 X 5 inch slab of copper and spot mill a 3/4 depression
in each end (all dimensions inches).

Take a 4 X 5 file card and cut two 1" holes centered on the milled
depressions.

Glue some toothpicks to the copper slab and glue the cardboard to the
toothpicks to form an insulating cover to prevent sunlight from heating
the copper slab.

Put equal amounts of water in each depression, shade one side, and time
the evaporation.

The copper slab should keep both samples equal in temperature.

Instrument with a Radio Shack thermometer/hygrometer and create curves
for varying temperatures and humidities. 

-- 
Jim Pennino
Remove -spam-sux to reply.

Relevant Pages

  • Re: Global dimming masking greenhouse effect
    ... > how we are to control for variations in relative humidity and air speed ... > evaporation, and I'd then expect net evaporation to be rate-limited by ... Glue some toothpicks to the copper slab and glue the cardboard to the ... The copper slab should keep both samples equal in temperature. ...
    (sci.energy)
  • Re: Stockpile food for flu crisis
    ... Influenza Virus Transmission Is Dependent on Relative ... Humidity and Temperature ...
    (misc.survivalism)
  • Re: Air Conditioning Question
    ... degrees outside and I have the temperature set at 80 or 78, ... Now one thing you can do is take the temperature at the return air opening, the filter grill, and then take the temperature at the closest supply air opening and see if the temperature difference is around 20 degrees. ... In high humidity climates the new higher EER & SEER condensers have a smaller BTUH compressor as compared to the two over sized coils. ... Next, go over every thing concerning the entire system that could be reducing the optimal transfer of latent heat (i.e., humidity condensation) plus total heat absorption & transfer to the condenser outside. ...
    (alt.home.repair)
  • Re: Now- The Help Polly Fit Her Pants Charitable Fat Fund!
    ... "Leslie & The Furbabies in MO." ... humidity problems. ... but you also have humidity *and* temperature to deal ...
    (rec.crafts.textiles.quilting)
  • Now- The Help Polly Fit Her Pants Charitable Fat Fund!
    ... I noticed that the leg seams are serged over elastic just in case I gain 120 pounds. ... humidity problems. ... humidity *and* temperature to deal with. ... It could be that you needed to have your concoction at a different temperature and I don't have a clue whether you needed to have it set in a bowl of hot water or ice cubes. ...
    (rec.crafts.textiles.quilting)
Quantcast