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Re: Best Heat for my Shop ? HELP

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Posted by nicksanspam on May 4, 2004, 2:40 pm
 


Piece of cake... See

http://users.montanadsl.net/~reysa/

NREL says 930 Btu/ft^2 of solar heat falls on a square foot of south wall
on an average 24.4 F December day in Des Moines. Rotate the shop so one
56'x12' = 672 ft^2 side faces south, if needed, then apply a single layer
of Dynaglas corrugated polycarbonate "solar siding" (which comes in 4'x12'
sheets) over a 6" air gap with vent holes through the south wall to collect
0.9x672x930 = 562K Btu of sun on an average day.

With R20 wall and ceiling insulation and a 2240 ft^2 ceiling and 1632 ft^2
of non-south walls and heat storage under the ceiling, the air coming out
of the upper vents on an average December day might have temp T (F), where
562K = 8h(70-24.4)672/R1+8h(70-24.4)1632/R20+24h(T-24.4)2240/R20, so T1 F.

If the ceiling store has an average (130+80)/2 = 105 F temp over 5 cloudy
days, the shop needs 5(8h(70-24.4)2304/20+24h(105-24.4)2240/20)) = 571K Btu
for 5 cloudy days in a row. This might come from 571K/(130-80) = 11,424
pounds or 178 ft^3 or a 1120ft^2x2" or 2240ft^2x1" of water in overhead
flat plastic film ducts cooling from 130 to 80 F, with a slow ceiling fan
and a thermostat to bring down warm air as required.

Nick


Posted by pjm on May 4, 2004, 2:55 pm
 
On 4 May 2004 10:40:29 -0400, nicksanspam@ece.villanova.edu wrote:


    Bunch of shit as always, Nick.
    
    Stick to ripping off local tradesmen and calling anyone who's
not a 'fellow loony' 'criminal'.  You're much better at it.



Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'

HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/
Free Temperature / Pressure charts for 38 Ref's http://pmilligan.net/pmtherm/

Posted by ~^Johnny^~ on May 10, 2004, 7:24 am
 On Tue, 04 May 2004 14:55:44 GMT, pjm@see_my_sig_for_address.com wrote:


Well,  let's see:

Nick knows what he is talking about,  and can back himself up.
You,  On the other hand,  have been blowing nothing but hot air (with the rare
exception a time or two,  I'll give you credit for that,  when you came
through).  Now,  who am I going to patronize:  The guy on eBay with only 5%
positive feedbacks,  or the guy with 95% or more positives?

You lose,  Paul.  
Nick may not specialize in refrigeration,  but he can and will run circles
around you in teh areas of solar/alternate energy and thermodynamics.
BTW,  buddy,  thermodynamics is the cornerstone of refrigeration and heating
engineering.  Either way:  you lose,  my friend.


You either :

a) drink too much

b) abuse street drugs

c) need professional help

or:

d) all of the above


For you,  Paul:
http://www.amishrakefight.org/gfy/

AND:
The link below is reserved especially for Paul ONLY.  I set it up ESPECIALLY
for him,  since he so richly deserves my attention. All others are strictly
forbidden to visit, but only if they use Windows98 or earlier.  Otherwise, DO
NOT visit if you are not Paul,  and you run Windows98 or earlier. You have
been forewarned!

http://www.gyrogearloose.com/VeryRudePage/

Hey Paul,    the joke is in your hand!  :)


--
  -john
            wide-open at throttle dot info

~~~~~~~~
But I say, "No!"
and I guess that's good
I'd hate to fuck up worldwide brotherhood!
              -John Doe
~~~~~~~~

Posted by pjm on May 10, 2004, 8:45 pm
 On Mon, 10 May 2004 00:24:48 -0700, ~^Johnny^~


    What Nick Pine thinks he knows about *anything* he could stick
up his ass and still not muster up a good fart with all his hot air.



Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'

HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/
Free Temperature / Pressure charts for 38 Ref's http://pmilligan.net/pmtherm/

Posted by Steve Spence on May 11, 2004, 10:09 am
 Nick must have caught you in a math misspeak. Every one here knows Nick's
credentials. You just seem to be a poser, and a crank. Goodbye Don ....

*plonk*

--
Steve Spence
Renewable energy and sustainable living
http://www.green-trust.org
Discuss vegetable oil and biodiesel
powered diesels at
http://www.veggievan.org/discuss/


the rare

circles

heating

ESPECIALLY

strictly

Otherwise, DO


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