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Search: Posts Made By: TechShop
Forum: Geothermal & Heat Pumps 09-30-17, 08:39 PM
Replies: 34
Views: 8,775
Posted By TechShop
I like it and this brings something to my mind: ...

I like it and this brings something to my mind:

I have a dehumidifier I made from a $10 second-hand window-unit that I gutted. I simply installed a drip hose into the drip-pan and placed it on a...
Forum: Geothermal & Heat Pumps 09-29-17, 03:12 PM
Replies: 37
Views: 4,303
Posted By TechShop
The main difference is in the manufacturing...

The main difference is in the manufacturing process used for each foam.

EPS starts with a bunch of tiny polystyrene beads. They pour them into a mold and then heat it all up with steam or hot...
Forum: Geothermal & Heat Pumps 09-29-17, 11:27 AM
Replies: 37
Views: 4,303
Posted By TechShop
XPS foam has far more dimensional stability than...

XPS foam has far more dimensional stability than EPS foam. The blue stuff at the local stores is usually 15 PSI structural XPS. I special-ordered 25 PSI for use under my concrete slab foundation...
Forum: Geothermal & Heat Pumps 09-26-17, 02:46 PM
Replies: 21
Views: 3,386
Posted By TechShop
I think that depends on where you're at in life...

I think that depends on where you're at in life and why you're doing these projects... If you're done building and ready for some efficient heat right now (winter is approaching) you have to go...
Forum: Geothermal & Heat Pumps 11-21-15, 03:01 PM
Replies: 7
Views: 1,565
Posted By TechShop
I like it. There is no reason you have to coil...

I like it. There is no reason you have to coil or helix your HX.

I was thinking about your epoxy end fittings. If you wanted to make them serviceable, you could use a standard water tight cord...
Forum: Geothermal & Heat Pumps 11-17-15, 11:34 AM
Replies: 28
Views: 6,745
Posted By TechShop
Perfect! Any time you can source your parts from...

Perfect! Any time you can source your parts from the scrap pile, or the donor equipment, you're way ahead. I recall seeing similar boards in the 230v/50Hz split units I dealt with overseas. The...
Forum: Geothermal & Heat Pumps 11-16-15, 08:19 PM
Replies: 4
Views: 1,528
Posted By TechShop
Jeff5may, that's what made me decide to post it. ...

Jeff5may, that's what made me decide to post it. I constructed this unit as a self-teaching tool and proof of concept for GSHP. I learned enough to successfully build and install my 4 ton unit.

...
Forum: Geothermal & Heat Pumps 11-16-15, 06:33 AM
Replies: 4
Views: 1,528
Posted By TechShop
DIY "Micro GSHP" (on the cheeeeap)

For about 1-1/2 year I lived in a motorhome on my own land while I built my new home. It was originally propane heat, but weighing anchor and going to fill up the propane was a big problem. So I...
Forum: Geothermal & Heat Pumps 11-08-15, 02:37 AM
Replies: 38
Views: 6,295
Posted By TechShop
Here's a shot of the "prototype" control...

Here's a shot of the "prototype" control system... It's very cobbled, hasty, but seems to work as planned.

http://ecorenovator.org/forum/attachment.php?attachmentid=6201&stc=1&d=1446967300

I...
Forum: Geothermal & Heat Pumps 10-27-15, 12:21 AM
Replies: 38
Views: 6,295
Posted By TechShop
Test day

This evening I decided it was time that I conduct some testing on my system.

I am running a combination of closed loop and open loop for the time being until I connect my second (much larger)...
Forum: Geothermal & Heat Pumps 09-10-15, 11:31 AM
Replies: 8
Views: 1,736
Posted By TechShop
I have brazed and pressure tested the heat pump...

I have brazed and pressure tested the heat pump but have not tested the system yet. I will be doing that over the next few weeks. Here's a thread with some details and photos of the system and the...
Forum: Geothermal & Heat Pumps 07-07-15, 02:32 AM
Replies: 146
Views: 38,047
Posted By TechShop
Nice work on this project. Of course, I can see...

Nice work on this project. Of course, I can see the machinist in the custom fabricated components and workmanship in your photos. Very cool!

I came here with some ideas and a solid plan, already...
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