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Inexpensive sunspaces

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Posted by nicksanspam on November 3, 2006, 1:01 pm
 
http://www.teksupply.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId 053&catalogId2001&ftCatalogId001&storeId001&langId=-1&division=TekSupply&searchMethod=wcSearch&searchType=ANY&searchBeginIndex=0&searchDefaultPerPage&ftSearchBeginIndex=0&ftSearchDefaultPerPage&partNumber5206

A 60' long x 12' deep lean-to sunspace might have

1 105206  $69 60'x6'4" vinyl panel,
2 105192  $59 12' clear gable ends, and
2 104419W $39 12'x30' awnings.

That's $265, ie $.76/ft^2.

A 30' version might have

1 105197  $89 30'x7' vinyl panel,
2 105192  $59 12' clear gable ends, and
1 104419W $39 12'x30' awning.

That's $46, ie $.35/ft^2.

On an average 30 F January day near Phila, the small one might gain
2x8x12x0.9x415 = 71.7K Btu/day from the endwalls plus 7x30x0.9x1000
= 189K Btu from the south wall and lose 6h(70-36)402ft^2/R1 = 82K Btu
through the walls. With bubble wrap foil beneath, the roof might lose
6h(70-36)360ft^2/R3 = 24.5K Btu, for a net gain of 154K Btu, the heat
equivalent of about 1.5 gallons of oil burned at 80% efficiency.

A dark mesh curtain (eg 80% black greenhouse shadecloth) behind
the glazing could make it more efficient and and comfortable.
How can we airseal it?

Nick


Posted by Joe Fischer on November 3, 2006, 5:20 pm
 
On 3 Nov 2006 08:01:26 -0500, nicksanspam@ece.villanova.edu wrote:


           I wonder if my little town would allow a lean-to
like that, there is a group of people trying to get control
of city council and force people to keep up and upgrade
their property, with a $00 fine if a citation is issued.


          I could put two of the big ones on my SW wall,
one above the other.


          What roof?     Does a lean-to have a roof?

           Rather than bubble wrap, could I get the same
effect if I raised the CO2 level in the lean-to up to
about 50 percent?


           I have a sample of black chrome plated copper
from the 1970s, if that were still available, it might
increase the air temperature quite a bit.

           Try to think of a way that I could make it
look enough so that nobody would object, I might
even want to make it so that I could work in the
sunspace on cold days.

            I could do a lot more work on my cars and
even do some cut vinyl applications on vehicles if
I had a sunspace, but there are a lot of catch 22s,
I would be allowed to do more if I could get the
property zoned commercial, but that might cause
me to lose my old age homestead exemption on
the real estate tax.  
           It would be nice to put a sunspace on the
SE wall, so I would have some heat earlier in
the day, but it faces the street.

           If there is some design that looks good,
it would be worth extra money to DIY install
wood or plastic ducts on the house with .065 in
thick glazing, with white louvers on the outside
to block the heat on warm days, and maybe
the white louvers could be made to look like
weather board or vinyl siding when closed,
and look more like a conventional house.  

          I would also be interested in ducting,
a fan and filters to be able to pull warm air
from the attic on cool days, it burns me up
to think that my car stays warmer than the
house from the sun, even with the heat on
in the house.

Joe Fischer


Posted by Goedjn on November 3, 2006, 6:36 pm
 

It is for people like that, that the short stake was invented.

Posted by Nick Hull on November 3, 2006, 11:03 pm
 

I  thought rope was invented for them ;)

--
Free men own guns - www.geocities/CapitolHill/5357/

Posted by nicksanspam on November 3, 2006, 6:43 pm
 http://www.teksupply.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId 053&catalogId2001&ftCatalogId001&storeId001&langId=-1&division=TekSupply&searchMethod=wcSearch&searchType=ANY&searchBeginIndex=0&searchDefaultPerPage&ftSearchBeginIndex=0&ftSearchDefaultPerPage&partNumber5206
 
Alternatively, a 30' long x 12' deep sunspace might have
 
1 105197  $89 30'x7' vinyl panel,
2 105192  $59 12' clear gable ends,
8 4'x12'  $0 pieces of Dynaglas clear corrugated polycarbonate, and
1 308'    $54 2x4 frame

That's $061, ie $.95/ft^2.

On an average 30 F January day near Phila, it might gain 2x8x12x0.9x415
= 71.7K Btu/day from the endwalls plus 7x30x0.9x1000 = 189K Btu from
the south wall plus 12x30x0.9x620 = 200.9K Btu from the roof and lose
6h(70-36)762ft^2/R1 = 155.4K, for a net gain of 305.5K Btu/day, the heat
equivalent of about 3 gallons of oil burned at 80% efficiency.

The roof might have a silver tarp cover in summertime.

Nick


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