The real "300$" walipini (pit greenhouse)

Hadez411

Well-Known Member
Once I'm closed in, I'm going to modify my current propane tank fireplace to be a snorkel heater like in the photo below. It already looks quite similar, I have the same kind of pipe on it and everything, just need to modify my current door to be a top feeding door. Also, I have a damaged water storage cube and I'm going to cut the top off so I can suspend the stove inside of it. If I can, I'll make the fireplace removable so that it has the option of being used as a makeshift hot tub ;)
Only difference is that I'll give my snorkel stove a good paint job with some stove pipe spray paint or maybe high heat engine/caliper enamel. Otherwise I assume the heat, steel and water are a recipe for rusty orange colored soup.
I may add some bromine or something just to keep it from being a source of any bacterial growth that could affect my air quality... or make it less appealing as a potential hot tub. Salt water would make it less dense and hold less heat in my opinion. That and everyone and their uncle has some left over pool chemicals laying around in their shed.


 
Last edited:

SoMe_EfFin_MasS_HoLe

Well-Known Member
Once I'm closed in, I'm going to modify my current propane tank fireplace to be a snorkel heater like in the photo below. It already looks quite similar, I have the same kind of pipe on it and everything, just need to modify my current door to be a top feeding door. Also, I have a damaged water storage cube and I'm going to cut the top off so I can suspend the stove inside of it. If I can, I'll make the fireplace removable so that it has the option of being used as a makeshift hot tub ;)
Only difference is that I'll give my snorkel stove a good paint job with some stove pipe spray paint or maybe high heat engine/caliper enamel. Otherwise I assume the heat, steel and water are a recipe for rusty orange colored soup.
I may add some bromine or something just to keep it from being a source of any bacterial growth that could affect my air quality... or make it less appealing as a potential hot tub. Salt water would make it less dense and hold less heat in my opinion. That and everyone and their uncle has some left over pool chemicals laying around in their shed.


I know where I'm sleeping & bathing if the lady gives me the boot. Hotel walipini here I come.
 

Hadez411

Well-Known Member
My water cube, on its side with the patch and new hole in the top. I used a slice of another broken water cube to make a patch and then screwed from the inside out with roofing screws into 2x2 pine. The result is a waterproof screw pinching together two sheets of high density polyethylene, with a silicone gasket between them. Hdpe is notoriously difficult to glue, so I just skipped that and screwed it together with some silicone sandwiched between. DSC_0285.JPG
 

Attachments

Hadez411

Well-Known Member
Photo is after some disassembly. I dunno if the air pipe will be large enough so maybe I'll make two. Have yet to find some flat material for the extended firebox door.DSC_0286.JPG
 

Hadez411

Well-Known Member
Realized I was welding cast iron for the collar and it was cracking at the seams so I gave up and used some steel epoxy to make it water tight. I also suck horribly at welding, so there's that too.

Little high heat enamel Tremclad and it's all good. DSC_0291.JPG
 

Hadez411

Well-Known Member
This picture makes me laugh. My eclectic collection of free insulation is on display here. Also the floor and back wall I just put in. My dedication to staying below 300$ has at times left this project feeling a bit haggard but I think it's sort of coming together.

I found some 2"x8" boards that were salvageable from an old, fallen down cabin. I cut those into 2x4's and made myself a floor that can support my water cube and a back wall that can both hold the free roxul I got and have shelves added to it more easily since it's traditionally framed. DSC_0305.JPG
 
Last edited:

Hadez411

Well-Known Member
energy_stored_water_kwh (1).png Not a lot got done today. Fixed a double pane window that lost its seal.

I found this image on engineeringtoolbox. Com
According to this chart, my 250gal (946L) of water in my cube, at a temperature differential of 20 degrees celcius on average, would give it around 20-25 KW/hr of energy to the surrounding area. That's lots to heat a 10x10 area with R12 walls, by my estimate (or rather an online calculator).
I will control the heat release with insulation or increase it with a fan or by drawing intake air over it.
 
Last edited:

Hadez411

Well-Known Member
I put it on the side instead of the back wall because I felt more comfortable with the 1600 pounds (or so) of water being upright instead of leaning on the back wall. I also felt like it might get all of its sun blocked by big pot plants if it were on the back wall.

DSCPDC_0001_BURST20181222142224393_COVER.JPG
 
Last edited:
Top