Forum: Conservation
02-26-21, 08:13 PM
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Replies: 6
Views: 22,361
Hi,
Here are some temperatures logged in my...
Hi,
Here are some temperatures logged in my attic for quite a few months for whatever its worth:
https://www.builditsolar.com/Experimental/Attic/AtticTemps.htm
Note the large daily swings --...
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Forum: Solar Heating
01-09-20, 12:59 PM
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Replies: 9
Views: 20,574
Hi,
Don't know if this is still a current...
Hi,
Don't know if this is still a current project for you, but a little info on your questions...
Heat Stored in Water:
Heat Stored = (specific heat of water)(Thi - Tlow) (weight of water)
...
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Forum: Solar Heating
01-09-20, 12:12 PM
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Replies: 12
Views: 29,336
Hi,
Here is an interesting solar air to...
Hi,
Here is an interesting solar air to water heater that goes a long ways back, but is very simple.
https://www.builditsolar.com/Projects/WaterHeating/SolarAirWaterHeater.pdf
The air to water...
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Forum: Solar Heating
03-09-18, 11:27 AM
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Replies: 3
Views: 12,337
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Forum: Solar Heating
03-09-18, 11:17 AM
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Replies: 3
Views: 20,007
Hi,
Looks great!
Mine is more than 10...
Hi,
Looks great!
Mine is more than 10 years old now and still going strong.
Only change I've made was to change the lower glazing panels from Acrylic to twinwall polycarbonate after banging...
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Forum: Renovations & New Construction
09-14-16, 07:35 PM
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Replies: 30
Views: 25,130
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Forum: Solar Heating
03-11-15, 04:48 PM
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Replies: 5
Views: 6,898
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Forum: Solar Heating
03-11-15, 11:07 AM
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Replies: 13
Views: 23,625
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Forum: Solar Heating
03-11-15, 10:58 AM
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Replies: 13
Views: 23,625
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Forum: Solar Heating
03-10-15, 02:06 PM
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Replies: 13
Views: 23,625
Hi,
I asked one of the makers of rotomolded...
Hi,
I asked one of the makers of rotomolded polyethylene tanks what temperatures the tanks could withstand -- the answer was:
"Our tanks are rated to spike at 140 and run a constant temp of 120....
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Forum: Conservation
02-04-13, 10:07 AM
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Replies: 100
Views: 159,129
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Forum: Conservation
02-02-13, 08:42 PM
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Replies: 100
Views: 159,129
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Forum: Other Improvements
01-31-13, 07:39 PM
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Replies: 5
Views: 7,176
Hi,
We have a recurring problem with ice dams...
Hi,
We have a recurring problem with ice dams on one part of our roof.
I've did as much as possible on the insulation front, but still got the ice dams.
What I found works is to get a "roof...
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Forum: Solar Power
01-29-13, 09:21 PM
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Replies: 35
Views: 29,597
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Forum: Tools
01-23-13, 08:15 PM
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Replies: 9
Views: 10,650
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Forum: Appliances & Gadgets
01-10-13, 09:25 PM
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Replies: 18
Views: 17,001
Hi,
Bubblewrap on windows has a less than one...
Hi,
Bubblewrap on windows has a less than one heating season payback in our climate. Actually, it has a zero days payback if you get the bubble wrap free :)
The $22 sunspace in the Feb 2005...
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Forum: Conservation
12-19-12, 11:23 AM
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Replies: 100
Views: 159,129
Hi,
I do plan to have a blower in the outside...
Hi,
I do plan to have a blower in the outside air path and use the dryers blower for the dryer exhaust path. I've got an Elucent blower that appears to be about the right size -- I think it might...
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Forum: Conservation
12-19-12, 11:16 AM
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Replies: 100
Views: 159,129
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Forum: Conservation
12-17-12, 09:19 PM
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Replies: 100
Views: 159,129
How about this one!
Dryer heat exchanger...
How about this one!
Dryer heat exchanger (http://www.alkeng.com/AL/dryer)
"performance is quite good. Access holes for a digital thermometer in the top two compartments show air from the dryer...
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Forum: Conservation
12-17-12, 09:07 PM
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Replies: 100
Views: 159,129
An interesting commercial clothes dryer heat...
An interesting commercial clothes dryer heat exchanger:
ROTOTHERM - Too Good To Be True? Not Always (http://www.rototherm.net/art_01.html)
"Ramada Achieves 50% Fuel Reductions with Laundry...
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Forum: Conservation
12-17-12, 05:01 PM
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Replies: 100
Views: 159,129
Hi,
Those numbers don't seem that bad to me.
...
Hi,
Those numbers don't seem that bad to me.
There are 115 million households in the US, and if they typically run the dryer once a day, your chances of have a dryer fire on a given run are about...
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Forum: Conservation
12-17-12, 03:17 PM
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Replies: 100
Views: 159,129
Hi,
Here are the pictures of the "throwaway"...
Hi,
Here are the pictures of the "throwaway" prototype of the dryer heat exchanger
Untitled 1 (http://www.builditsolar.com/Experimental/DryerHX/DryerHXProto.htm)
Any suggestions would be...
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Forum: Conservation
12-17-12, 10:04 AM
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Replies: 100
Views: 159,129
Thanks -- that heat exchanger is beautiful.
...
Thanks -- that heat exchanger is beautiful.
I like the counterflow in that it appears that about the best efficiency you can get from a cross flow is in the 60 to 70% range, and the counter flows...
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Forum: Conservation
12-16-12, 10:36 AM
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Replies: 100
Views: 159,129
Hi,
In this paper:...
Hi,
In this paper: http://www.ewp.rpi.edu/hartford/users/papers/engr/ernesto/pastor/MEP/Other/References/Counter%20Flow%20Heat%20Exchanger.pdf
They describe a counter flow heat exchanger that...
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Forum: Conservation
12-15-12, 09:50 AM
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Replies: 100
Views: 159,129
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