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From: "moorea(uol)" <moorea@uo*.co*.br*>
To: <techdiver@aquanaut.com>
Subject: More about breathing Helium thermal loss
Date: Wed, 21 Feb 2001 09:34:23 -0300
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First of all i wanna thank you people, this is helping so much.
But maybe i did not made myself clear. I was talking about breathing =
gas, there=B4s no question about drysuit inflation, but it stills (not =
for me at all) about gas breathing.
Many people wrote that the thermal conductivity is related with gas =
density (breathing again).
Another one wrote what i think it=B4s the truth, the thermal conduction =
is related with the thermal properties of gas more than the density (i =
agree that density is a factor, but not the main one).

when i said about Q =3D m c (det t)
Q=3D total heat exchange
m=3D mass
c=3D specific heat
delta t=3Dtime variation

Still the question.

And more, the biggest heat loss is really on the water vapour ? if so =
the heat exchanges are not the biggest concern ?

thanks again=20

Marcelo Moorea

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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>First of all i wanna thank you people, =
this is=20
helping so much.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>But maybe i did not made myself clear. =
I was=20
talking about breathing gas, there=B4s no question about drysuit =
inflation, but it=20
stills (not for me at all) about gas breathing.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Many people wrote that the thermal =
conductivity is=20
related with gas density (breathing again).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Another one wrote what i think it=B4s =
the truth, the=20
thermal conduction is related with the thermal properties of gas more =
than the=20
density (i agree that density is a factor, but not the main =
one).</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>when i said about Q =3D m c (det =
t)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Q=3D total heat
exchange</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>m=3D mass</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>c=3D specific heat</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>delta t=3Dtime
variation</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Still the question.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>And more, the biggest heat loss is =
really on the=20
water vapour ? if so the heat exchanges are not the biggest concern=20
?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>thanks again </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Marcelo =
Moorea</FONT></DIV></BODY></HTML>

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