Geothermal cooling and heating through underground earth tubes: air ventilation for passive house

[@kareem.bk1]

What is the lifespan of these tubes please ? Thanks for the efforts!

[@W1ldSm1le]

Plastic not exposed to UV will last for functionally forever underground

[@vjvignesh]

Thank you very much for the playlist with all the 4 videos. Very nicely made and informational. We are planning to use this system for cooling a greenhouse in a hot and humid area because evaporative cooling wouldn't work in a humid area. Few questions: 1. Is there a way to know or measure if the system will work in an area even before we install it? 2. Will this system if the tubes are buried under a pond of water instead of ground? 3. At time 1:29 in this video, i see an orange tube in addition to two blue tubes. Curious to know what it is? 4. Also, curious to know how the fan and system looks on the inside of the house. Couple of photos could help. Once again, thank you.

[@gonzaflex]

Hi, do you have pictures of the tube connection to the house? I want to know how isolate the tube from outside to inside house, in order to avoid humidity inside.

[@jcb570]

please make a follow up video.. would like to see some numbers on avg. temps

[@jefemaistro]

this would be nice

[@bobb2595]

Can you tell me what the tubing is specifically? Correct terminology, brand & any specs that you know

[@kariguzman2607]

What was used to create the siphon?

[@funmaster4632]

Can't you curve the pipes to run less trench?

[@nrlog3682]

Thes pipes can t take more than 90degrees...

[@axelv1753]

Did you say that the system is radon free? How did you construct it to achieve that? Is this mainly due to the tubes having no sections?

[@nrlog3682]

No, the system can t be radon free if there is radon in the area. It has to be installed in a radon free area.

[@greg925911]

well how dose it work how is the air quality

[@a_balanced_perspective]

How to connect couple tubes inside house?

[@nrlog3682]

With 2 Ts !!

[@rigbym99]

Can you please list the name of the tubes and the manufacturer? Thanks for posting.

[@nrlog3682]

it is called "hekatherm"

[@hawkintelligence]

Any "field tile" will work.

[@starmango]

@@nrlog3682 can we use HDPE DWC pipe ?

[@EscorpioShadow]

What runs thru those tubes? Air or water?

[@nrlog3682]

Air!

[@terranceedwards4750]

@nrlog I see the orange/ red tube coming out of the concrete along with the blue tubes. It looks to be connecter to at least one of the siphons. Does it connect to both? Why?

[@nrlog3682]

Hi. The red one is a pre disposal for an electricity routing in the area. Nothing to do with the ventilation.... sorry if misleading

[@terranceedwards4750]

Hi. Ok. There's nothing misleading. I sent a request to you all via your website. It was is french but I was able to navigate enough to send it. I'll be on the look out for that reply. Thanks.

[@terranceedwards4750]

@nrlog I haven't gotten a reply through the website, so I want to ask you here. How can I get your design for the entrance and exist of the pipes going into and out of a house, and how they are ran in the house?

[@terranceedwards4750]

Is there any way to contact you through email? My inquiry to your site hasn't been replied to, and you seem to not check youtube often. I live in Texas, and our whole state is just now coming out of a lockdown from a state wide rolling power outage in order to survive a winter storm. We were 4 hrs away from totaling the capacity output to the entire state, which means 4 hours away from producing as much energy as possible and in real time sending it out, which if was done would have destroyed the grid. I've been building a house while in a tent, and yes I was in a tent when this worst storm in a century hit this state with temperatures here in some places getting as cold as some places on mars. I've always wanted to build your geothermal system for my house, since I've started to build it, and I'm months away from needing to buy the pipe for it. I really need some help as soon as you get the time.

[@nrlog3682]

@@terranceedwards4750 Hi. sorry busy those days. the inside is explained here (in French). nrlog.fr/index.php/2016/04/25/puits-canadien-provencal-a-air-comment-concevoir-et-realiser-les-parties-interieures-du-reseau-aeraulique/

[@sanoronha1963]

What about tree roots disturbing the tubes

[@nrlog3682]

True, i did not plant big tree above the tubes, but small fruit trees.

[@DestroyerX61]

Use rootguard

[@ThatOneScienceGuy]

I love it!

[@franklinbrown7389]

Can you please translate the other videos? Great work.

[@ustarecepusta]

hi.dear. why important 3% slope. Where does the condensate water go?

[@Van_Tage]

i think it probably goes to these siphons

[@ustarecepusta]

@@Van_Tage thanks.

[@jimh712]

i must have missed it.... what are the diameter of the tubes...

[@nrlog3682]

Hi. the diameter is 200mm (20 cm) per tube. regards

[@dtc989]

8 inches (American)

[@andreycham4797]

just buy a heat exchanger with built in heat pump for each KW elektricity used for ventilation you will get 2 or more KW of heat

[@nrlog3682]

Hi. Yes it is a good option to consider. in the house we have already a reversible heat pump for ground, so we did not re invest into a second one for the ventilation. but good idea.

[@stevenrix7277]

Nom de diou tu es francais :D Le meme accent que moi . xD

[@sachinthadahanayaka9061]

ok.what is the temperature difference? the most important thing :)

[@nrlog3682]

Hi. the answer is in another video... can heat up air of +17deg in winter and decrease of -15°deg in summer. kzbin.info/www/bejne/d5KQdWeji96Xntk

[@bobbydelvekio7786]

I learned that from a guy 20 some odd years ago. We humans way over think the obvious

[@armentumhominum9931]

That leads to progress.

[@tombouie]

Thks, oh your corrogated tubing will trap debris. Since smooth tubing would not trap as much debris as corrogated tubing, perhaps smooth tubing should have been used.

[@nrlog3682]

Hi. Inside the tube is smooth. And yes we plan to wash it with water this year!

[@bobbydelvekio7786]

You don't need to do all that ! Dig trench(as deep as far as you can .in a small area loop it back and forth on top of its self it doesn't matter )any kind of PVC pipe- screen where air enters plump other into house ,get a fan that pulls a lot of air and place it in pipe that's in your house ....walha ! Ez pz and that's all you do . Don't over think it cause it's just as simple as that. That deeper the cooler .

[@jimmygeorge8537]

Question:: what pipe is the best to use to last the. Longest? I was thinking 6” sch 40. Do you have to go that heavy duty ?

[@hearthrob300]

Not a good idea to use plastic tubes buddy. Chances are they may develop holes then you will have problems with radon gas getting into your ventilation system. Also you have molds to consider.

[@nrlog3682]

Hi. it is actually not any tube, but a PE tube designed for the purpose (sustain the earth weight, anti static, no VOCs). Radon is an issue as well on surface where air is taken, so the idea is to NOT implement this in a RADON area in general. for the molds , the slope used to drain condensation shall save this.

[@George-iq6mu]

😅

[@bigphillyed]

Please explain why you use a plastic piping, which prohibits the effective conduction of energy. This is simply wrong!

[@nrlog3682]

It is not a problem to be in plastic as the surface temperature has time to meet the earth temperature. The temperature with the earth inertia is only changing of 1degree every month. You see the results from the system with measures in the fourth video on the channel nrlog.

[@bigphillyed]

@@nrlog3682 you mean to say that there is only a one degree difference between plastic and metal pipe? You are way wrong, the difference can be up to 15 degrees in difference. Now I know your just full of shit.

[@nrlog3682]

Ah. Full of shit? What i mean with the one degree is that in august the earth and plastic pipe is maybe at 22degrees, and september will be 20/21... etc . The plastic is at the ground temperature... revise your physics man...