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PostPosted: Jan 8th, '18, 08:53 
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Seriously, this cant be healthy.
Seriously, this cant be healthy.
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boss wrote:
Stones, coke and broccoli barrels. I like where this is going. The only one I'm unfamiliar with is the broccoli barrels. I better go back to see what I missed. Happy new year to you and yours!


Thanks boss

I meant boxes if I said barrels.

The broccoli boxes are just polystyrene boxes that broccoli gets delivered in.

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PostPosted: Jan 8th, '18, 09:44 
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Seriously, this cant be healthy.
Seriously, this cant be healthy.
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From the look of some of my old info in my heat transfer experiments, I dont think it's going to be possible to store heat underground from one season to the next in a backyard.

Heat gets moved from a system very quickly by a water filled pipe running through it.

In my trials with a thermosyphon and a collector container, I discovered I could pull the heat out of a hot air filled box with just a single thin pipe with the water flow created by the thermosyphon.

I realise that air doesn't have a lot of heat storage potential, but even water in liquid form doesn't hold enough for long term storage (although interestingly (and perhaps pointlessly to this discussion) I did discover recently that water takes 80 times more energy to melt snow than it does to gain 1℃ more.

I think rocks hold around a fifth as much heat as water.

To keep the system warm a growhouse will do wonders.

People seem to get pretty good results with burying their tanks, but I dont think that has much to do with storing heat over the seasons, but rather that the ground has a pretty consistent temperature the deeper you go (for shallow depths - once you get very deep you get lava). I would guess that the bottom of a three meter deep hole would be close to the average yearly temperature of the location. looking...

http://answers.google.com/answers/threa ... 47431.html

https://en.wikipedia.org/wiki/Volumetri ... al_inertia

This looks like some well implemented experiments...

http://www.homeintheearth.com/tech_note ... xperiment/

That last one if very interesting indeed.

You could fine tune your temperature control with evaporative cooling a separate container of water (so you dont build up salts in your system's water) then transfering heat from your system into that tank.

A length of shade cloth with water flowing over it and a fan blowing through it should work pretty well to cool a tank of water water.

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My skills include being able to move slowly forward in time, and if I really concentrate, I can sometimes tell what I'm thinking.


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PostPosted: Jan 13th, '18, 10:59 
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You could fine tune your temperature control with evaporative cooling a separate container of water (so you dont build up salts in your system's water) then transfering heat from your system into that tank.

A length of shade cloth with water flowing over it and a fan blowing through it should work pretty well to cool a tank of water water.

Yes indeed BW. I have been experimenting with a short piece of 150mm pvc pipe, a tent fan and a micro jet nozzle connected to the garden hose and am finding it cools quite well. I think I would need at least 4 nozzles/misters and a long enough pipe to allow full evaporation of the mist to meaningfully reduce the temp, but placed over the sump or FT should reduce the water temp by about 4C (providing the water absorbs all of the coolth). I have put out feelers for a couple of metre length of suitable pipe (or failing that I'll build a facsimile from plastic mesh and felt/plastic sheet).

I think storing heat long term will be difficult to achieve too, but I will still give one well? hole? a try.


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PostPosted: Jan 14th, '18, 13:53 
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Seriously, this cant be healthy.
Seriously, this cant be healthy.
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Sounds good.
I hope it works.

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PostPosted: Mar 6th, '18, 17:44 
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Seriously, this cant be healthy.
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RE: me killing fish in an unbaited trap left in my system.

It seems I'm not the only one who can catch/kill fish in an unbaited trap.

I watched this documentary ages ago and should have remembered (here is the relevant bit)...

https://youtu.be/Q2WshkiSFpE?t=409

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My skills include being able to move slowly forward in time, and if I really concentrate, I can sometimes tell what I'm thinking.


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PostPosted: May 15th, '18, 11:57 
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Anyone looking for a nice clean medium to sprout seeds for aquaponics should have a look at sphagnum moss. The seedlings come out with out any damage to roots, and perfectly clean.

You can even place a wad directly into your system and put the seeds into it. Then either leave the moss in place for ever (it doesn't rot, but springs back into life, even though you buy it dry and dead).


You could also just pick it out once the plant had become established.


Here are radishes, and some kind of leek or something growing on my kitchen window sill.

Attachment:
120 Things in 20 years - Aquaponics - Sphagnam moss as seed raising mix .jpg
120 Things in 20 years - Aquaponics - Sphagnam moss as seed raising mix .jpg [ 147.45 KiB | Viewed 374 times ]

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My skills include being able to move slowly forward in time, and if I really concentrate, I can sometimes tell what I'm thinking.


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PostPosted: May 15th, '18, 20:14 
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I don't think I have ever seen these mosses alive before, but then again the Southwest USA is about the opposite type of environment it grows in. https://en.wikipedia.org/wiki/Sphagnum I got to say it is pretty cool looking.

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PostPosted: Aug 10th, '18, 01:16 
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Seriously, this cant be healthy.
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Oddly the moss I dropped into my grow bed hasn't really done much by way of springing into life.

It's been in for a few months now and still looks pretty dull.

It hasn't gone to rot in spite of being always soaked though, so perhaps that means it's alive but not quite as green as I Thought it might be.

See!

I'm not dead.

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My skills include being able to move slowly forward in time, and if I really concentrate, I can sometimes tell what I'm thinking.


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