[simpits-tech] How do you deal with temperature inside the pit?
Craig Rochester
simpits-tech@simpits.org
Sun, 24 Nov 2002 11:38:23 -0500
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Finally a question I'm qualified to answer. :) I do a lot of HVAC in my
work.
Before you decide on cooling you should consider ventilation first. Your
pit is basically a small room in a larger room. Here are the basic details
to evaluate:
1.. What AC and or ventilation do you have in the room the pit is in?
I.e. room size, AC air flow rate, AC air supply temperature(out of duct).
2.. What outside air conditions, Temperature(T) and Relative Humidity(RH)
does you location see summer/winter?
3.. What clothing and/or helmet and mask equipment will you use?
4.. If you use a "oxygen mask" where will the air come from and where will
it exhaust?
5.. How much heat will be generated by the equipment in the pit?
The RH is a very important parameter that is often overlooked. The simplest
way to get rid of the humidity and heat generated by you and the equipment
is to exhaust it out. What goes out must be made up "Outside Air
Make-up"(OA) and this must be cold enough and dry enough to provide a T and
RH equilibrium that is comfortable. IF the room's air is good enough to
provide sufficient OA to the pit all you need to do is have an exhaust
system(simple fan) with vents located to direct the OA air through the pit.
If you room is too warm or humid to knock down the T/RH of the pit, then
active cooling is required. If cost is important and you're handy(if you
can build a pit...) I'd use a regular window air conditioner and build a
shroud around the "evaporator" section, the part that goes outside the
window. The shroud would be connected to a fan to blow the air outside the
room through the bars. The room-side of the air conditioner would be
directed to the pit's OA make-up.
I'd be glad to provide assistance in determining the details if you wish.
Craig R.
-----Original Message-----
From: simpits-tech-admin@simpits.org
[mailto:simpits-tech-admin@simpits.org]On Behalf Of Albert Yung
Sent: Wednesday, November 24, 1999 10:16 AM
To: simpits-tech@simpits.org
Subject: [simpits-tech] How do you deal with temperature inside the pit?
Hi guys,
This is a question especially for those of you who have or planning on
building an enclose cockpit (especially for the f16), i.e. with a canopy.
How do you deal with temperature that will bound to build up within the pit?
Heat generated from all the electronics, backlid panels, extra monitors
(If you are not using a projector) and your own body heat
The only reason why I want to have a canopy is not for aesthetic but for
"Sound proofing" myself when I talk over RW (because I share room).I dont
want to "premanently" sound proofing myself by suffercating myself from
within the cockpit. Turning the pit into a coffin :)
To make matter worse I live in a flat where I cant break any walls to put
in a ducted reverse cycle air cond... I have grills and bars on my windows
to keep out intruders so no way I can put in a wall/window mounted air cond.
My only hope would be a portable air conditioner or one of those evaporative
coolers...modify it and throw an inlet into the pit.
My second question would be, evaporative coolers, are they any effective
in cooling the inner space of the f16 pit? because the price of one of them
is like 1/10 of a portable air conditioner.
Would love to hear all of your thoughts :)
Albert
Sydney, bloody boiling in Austraila
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<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2>Finally a question I'm qualified to answer. :) I do a lot of =
HVAC in my=20
work.</FONT></SPAN></DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2>Before=20
you decide on cooling you should consider ventilation first. Your =
pit is=20
basically a small room in a larger room. Here are the basic details to=20
evaluate:</FONT></SPAN></DIV>
<OL>
<LI><SPAN class=3D415395515-24112002></SPAN><SPAN =
class=3D415395515-24112002><FONT=20
face=3DArial color=3D#0000ff size=3D2>What AC and or ventilation do =
you have=20
in the room the pit is in? I.e. room size, AC air flow =
rate, AC air=20
supply temperature(out of duct).</FONT></SPAN></LI>
<LI><SPAN class=3D415395515-24112002><FONT face=3DArial =
color=3D#0000ff size=3D2>What=20
outside air conditions, Temperature(T) and Relative Humidity(RH) does =
you=20
location see summer/winter?</FONT></SPAN></LI>
<LI><SPAN class=3D415395515-24112002><FONT face=3DArial =
color=3D#0000ff size=3D2>What=20
clothing and/or helmet and mask equipment will you =
use?</FONT></SPAN></LI>
<LI><SPAN class=3D415395515-24112002><FONT face=3DArial =
color=3D#0000ff size=3D2>If=20
you use a "oxygen mask" where will the air come from and where will it =
exhaust?</FONT></SPAN></LI>
<LI><SPAN class=3D415395515-24112002><FONT face=3DArial =
color=3D#0000ff size=3D2>How=20
much heat will be generated by the equipment in the =
pit?</FONT></SPAN></LI></OL>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2>The RH=20
is a very important parameter that is often overlooked. The =
simplest way=20
to get rid of the humidity and heat generated by you and the equipment =
is to=20
exhaust it out. What goes out must be made up "Outside Air =
Make-up"(OA)=20
and this must be cold enough and dry enough to provide a T and RH =
equilibrium=20
that is comfortable. IF the room's air is good enough to provide=20
sufficient OA to the pit all you need to do is have an exhaust =
system(simple=20
fan) with vents located to direct the OA air through the=20
pit.</FONT></SPAN></DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2>If you=20
room is too warm or humid to knock down the T/RH of the pit, then active =
cooling=20
is required. If cost is important and you're handy(if you can =
build a=20
pit...) I'd use a regular window air conditioner and build a shroud =
around the=20
"evaporator" section, the part that goes outside the window. =
The=20
shroud would be connected to a fan to blow the air outside the room =
through the=20
bars. The room-side of the air conditioner would be directed to =
the pit's=20
OA make-up.</FONT></SPAN></DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2>I'd be=20
glad to provide assistance in determining the details if you=20
wish.</FONT></SPAN></DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D415395515-24112002><FONT face=3DArial color=3D#0000ff =
size=3D2>Craig=20
R.</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader><FONT face=3D"Times New Roman"=20
size=3D2>-----Original Message-----<BR><B>From:</B>=20
simpits-tech-admin@simpits.org =
[mailto:simpits-tech-admin@simpits.org]<B>On=20
Behalf Of</B> Albert Yung<BR><B>Sent:</B> Wednesday, November 24, 1999 =
10:16=20
AM<BR><B>To:</B> simpits-tech@simpits.org<BR><B>Subject:</B> =
[simpits-tech]=20
How do you deal with temperature inside the pit?<BR><BR></DIV></FONT>
<DIV><FONT face=3DArial size=3D2>Hi guys,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>This is a question especially for =
those of you=20
who have or planning on building an enclose cockpit (especially for =
the f16),=20
i.e. with a canopy. How do you deal with temperature that will bound =
to build=20
up within the pit?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Heat generated from all the =
electronics, backlid=20
panels, extra monitors (If you are not using a projector) and your own =
body=20
heat</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>The only reason why I want to have a =
canopy is=20
not for aesthetic but for "Sound proofing" myself when I talk over RW =
(because=20
I share room).I dont want to "premanently" sound proofing myself by=20
suffercating myself from within the cockpit. Turning the pit into a =
coffin :)=20
</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>To make matter worse I live in a flat =
where I=20
cant break any walls to put in a ducted reverse cycle air cond... I =
have=20
grills and bars on my windows to keep out intruders so no way I can =
put in a=20
wall/window mounted air cond. My only hope would be a portable air =
conditioner=20
or one of those evaporative coolers...modify it and throw an inlet =
into the=20
pit.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>My second question would be, =
evaporative coolers,=20
are they any effective in cooling the inner space of the f16 pit? =
because the=20
price of one of them is like 1/10 of a portable air =
conditioner.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Would love to hear all of your =
thoughts=20
:)</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Albert</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Sydney, bloody boiling in=20
Austraila</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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