Daox's diy thermal differential controller - Page 3

mag7mm308 · 03-03-12, 03:39 PM

How about using your idea to pull hot air in winter but instead of connecting a fan to attic connect to a duct vent in floor and pull cool air from basement for free air conditioning? Also for using your controller for solar hot water pump could you either make a small 5 volt solar panel to run adruino and 12 volt panel for pump then change switch to 12 volt? Or even use 12 volt panel and reduce 12 to 5 volt going to adruino so you only need one panel, If solar hot water panel is warm enough to heat water you will have plenty of sun to power solar panel and you would have a system that would heat in case of poer outage. Just ideas I have been working on for myself, really like your controller also thanks

MN Renovator · 03-03-12, 09:29 PM

I did that until the basement was 76 degrees and I realized that it wasn't exactly free and the cool basement wasn't cool anymore. Works for a little while, maybe in the swing season for longer but no longer than a week. Neat backup plan for when the power goes out and your generator is 120v and can't power the a/c.

Paul_L · 09-06-12, 05:07 PM

how are you progressing with the upgrade for this microprocessor-based controller? I am trying to get started with a similar design, but somewhat more complicated, for my geothermal heating system. Anything you've learned would be appreciated greatly.

Paul_L

Daox · 09-06-12, 07:52 PM

I really haven't done anything with it since my last update. The original setup is still working great with my attic fan.

My plans haven't changed to upgrade it when I install my solar hot water. I just haven't gotten that far with the solar hot water setup yet. I'm hoping to get it up and running this fall so I have solar heat this winter.

What features were you hoping to add? I always like throwing around ideas that'll help improve a design.

03-03-12, 03:39 PM	#21 (permalink)
mag7mm308 Lurking Renovator Join Date: Mar 2012 Location: pulaski wi Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts	Using the controller for cooling house? How about using your idea to pull hot air in winter but instead of connecting a fan to attic connect to a duct vent in floor and pull cool air from basement for free air conditioning? Also for using your controller for solar hot water pump could you either make a small 5 volt solar panel to run adruino and 12 volt panel for pump then change switch to 12 volt? Or even use 12 volt panel and reduce 12 to 5 volt going to adruino so you only need one panel, If solar hot water panel is warm enough to heat water you will have plenty of sun to power solar panel and you would have a system that would heat in case of poer outage. Just ideas I have been working on for myself, really like your controller also thanks (Support EcoRenovator.org & get rid of these annoying ads!)

09-06-12, 07:52 PM	#24 (permalink)
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 3,673 Thanks: 206 Thanked 144 Times in 121 Posts	I really haven't done anything with it since my last update. The original setup is still working great with my attic fan. My plans haven't changed to upgrade it when I install my solar hot water. I just haven't gotten that far with the solar hot water setup yet. I'm hoping to get it up and running this fall so I have solar heat this winter. What features were you hoping to add? I always like throwing around ideas that'll help improve a design. (Support EcoRenovator.org & get rid of these annoying ads!) __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by Daox; 09-06-12 at 07:56 PM..

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03-03-12, 09:29 PM	#22 (permalink)
MN Renovator Less usage=Cheaper bills Join Date: Nov 2010 Location: Minneapolis, MN Posts: 495 Thanks: 21 Thanked 32 Times in 22 Posts	I did that until the basement was 76 degrees and I realized that it wasn't exactly free and the cool basement wasn't cool anymore. Works for a little while, maybe in the swing season for longer but no longer than a week. Neat backup plan for when the power goes out and your generator is 120v and can't power the a/c.

09-06-12, 05:07 PM	#23 (permalink)
Paul_L Old Physicist-Engineer Join Date: Sep 2012 Location: Dutchess County, NY Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts	how are you progressing with the upgrade for this microprocessor-based controller? I am trying to get started with a similar design, but somewhat more complicated, for my geothermal heating system. Anything you've learned would be appreciated greatly. Paul_L