Recent content by druidhr

Do you think these radiators would be good for above ground exchangers.

Here is the pic from today. We just filled half of the raised beds with water.

Yes, if air fails as heat extractor, I could pull 1/2" HDPE pipe through 5" pipe and fill it with water.

Isn't that enough to go for another solution? But thx for all the suggestions, earth tubing with water for heat extracting is very good solution. Will think about it for my next project.

No, earth tubing with air is less effective. No I didn't not. Requirements are not to high, just to keep greenhouse from freezing on cold day. It is small greenhouse 260ft² and is 6ft high. Here in Croatia we don't have harsh winters. Extreme temperature lik -5C to -10C but only for day or...

Logic is good, but storing energy in earth is for short term. I attached pdf file that explained termal saturation and recovery. Yea, I bought special double wall couagurated pipe that are designed to be buried directly into the ground. They have wide range of applications, here in Croatia...

I know that, I have under-floor heating in my house, and of course it is much better but it is much more expensive. Google "earth tubing". @Baluncore partially explained it.

Pipe is buried and greenhouse is on top of it.

I can't find polypropylene pipe here in Croatia. Are those PPR, PEHD or PEX pipes.

Thx alot for all the help :smile: I'll come back with info after I drain water.

Do I need some special poly-pipe for high pressure or garden one will be good? I found this one here in Croatia (image below), but it's only 8.5mm in diameter. High pressure hose Regular hose (reinforced with carbon threads)

Yes, and I already made greenhouse on top of it :rolleyes: This image is 3-4 weeks old, I already closed all openings with wooden boards (like on the right side of image) and made half of the raised beds.

I don't have diagram. I can only provide image and tell you on what depth and how far from the opening of pipe is water. On image below i marked opening on pipe where I will enter pipe. From that point, pipe goes straight to ground for 9ft and then pipe is layed like snake (like on the image)...

That's very pleasing to hear :smile: I have Gardena sucking pump that has specified 23ft(7m) vertical sucking. Pump specs: Force 600 W The largest thrust quantity 3000 l/h Max. pressure 3.5 bar Max independent suction 7 m Maximum thrust height 35 m The highest temperature of the medium 35 °C...

I was looking in mini submersible water pumps, but none are rated to 80ft. Maybe I'm looking it wrong. Specs on pump you linked says that max above head is 33ft. What does that means? Strictly 33ft vertically or horizontal lenght is also counted? Pipe is 9ft below ground but water is on 80ft...