Drilling and Installing a 212m Deep Vertical Geothermal Loop
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- Опубліковано 28 лис 2023
- In this video we have a 25t drilling rig in our garden drilling a 212m deep hole for a Geothermal Loop. The loop is connected to a Bosch Heat pump and will be our future heating system in the house.
The first 90m was mainly sand so two pipes was used. An outer casing and an inner drill pipe. When solid ground was found they continued with only the inner drill pipe.
The mud/chipped (lime) stone was removed using a high flow of water the was recirculated from a 20' container using a 7.5kW pump. After the drilling was finished most of the volume in the container was filled with sand and mud. We used ca 75m3 water for the project.
After inserting the loop they with some difficulty removed the casing and closed the void with bentonite.
Some 15years earlier we made new bathroom and pluming. I a bright moment I decided to put some empty pipes under the concrete floor and all the way into the lawn. They cam in handy now when we needed to connect the loop with the heat pump inside the house. So only a small part of the tile floor had to be removed to locate the opening.
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The system was filled with 25% IPA as brine.
The heat pump used is a 4-16kW Bosch 7800i
Data logger is husdata.se H66 - Навчання та стиль
i dont know why youtube recomended me this but i have always wanted to see the full process from start to finish with natural sounds. was a really interesting watch. thankyou so much :)
I toughts exactly. :D
That's Such a Nice Rig. Couple Million Dollar setup 💪 with a good Drilleron the levers that Baby Can Drill Baby Drill . Lots of Footage . Can you imagine having 3 sets of breakout Jaws as a Driller that's a dream and very safe.
Nice Video, cool to see the Hütte Drilling Rig. We are using Nordmeyer Drilling Rigs. Nice Video of how to drill a Geotherman borehole. Best regardes to Denmark
Great video!
At 13:30 driller forgot to rotate tricone bit (upper head is not rotating). No wonder he had a problem at the end 28:30 to extract casing pipes. Also, he should engage 1st gear to reduce rotation speed and increase torque when pull out casing pipes. Looks like the driller is a freshman. Dangerous.
Fascinerende Martin👍👍
Ja det var sjovt og det virker rigtig fint. COP ser ud til at være 5!
Nice video. Would love to see your home assistant integration
Martin, thank you so much for making this video. So if I could ask you a few questions?
How large is your house and how many tons or BTU is your heat pump? Can you power it through the winter on your solar system?
@@gordon6029 The house has a heated area of ca 320m2. The heat pump is a 4-16kW Bosch
@@martinbarfoed5040 thanks for that. I’m building with ICF and will only have an area of about the same.
What was the high and lowest temperature at inlet brine in heat pump? Thanks.
@@user-ry7yg2hk7i January 17 (coldest day in the year): Brine in 4.3C, out -1.0. July 2nd Brine in 9.3, out 6.0
This answers most of my questions. The only question I have is, after drilling about 250 feet deep I see that you’ve connected the geothermal from the top spot into the basement.
Is that not loosing heat or cold temperature before getting to your house?
Are you able to trim the cable at least 6 feet down to maintain and prevent freezing? And then take the pipe into your basement?
for ur question they fill the pipe with special fluid to keep the heat. Its a reverse of refrigerator.
There us only one hole with only one loop down? Is that enough and how big is your home?
Yes, one hole. The up/down tubes join with a U at the bottom.
The thermal yield is expected to be ca 50W per meter. So ca. 10.5kW from our drilling. This winter we heated 320m2 with no problem
You should talk about ground based not geothermal.
Ground based uses the constant temperature that you find at shallow depths.
Geothermal uses the heat radiating from the earth core at greater depths.
here in europe its called geothermal, not onlly for shallow depth..it can be drilled up to 1500m. Collecting heat from under ground, it can be also steam water from volcano.
@@xFlavoriax Calling ground-based heat geothermal is a new fad. It just sounds more exiting, but leads to confusion.
How do you distinguish between the heat sources but through names. Geothermal heat, I mean heat radiating from the earth core, is not connected to vulcanoes only, it is everywhere if you drill deep enough. In tectonic areas you just have to drill less deep.
IS CEMENTING NEEDED in geothermal drilling ? like this one in the video .
It’s a local requirement. It is to separate different layers of ground water. Other cities may have different rules.
actuelly its not 100% cemenet its a meture of bentonate n some amount of cement...its called in Germany Demmer. But its very important to isolate the loop from the drilled wall.
@@martinbarfoed5040 thank you for answering sir
Hvor besværligt er det til at få tilladelse til at udføre boring?
Det afhænger vist meget af din kommune. Borefirmaet skal sende en ansøgning og vi fik hurtigt tilladelse. Tænker at borefirmaet har en god ide om hvordan din kommune vil stille sig.
I would like to know the cost of the drilling
It’s expensive ! I think we paid ca EUR 20000 ex VAT. However it has worked really well during this winter-also in periods with very low temperatures
The workers should have worn helmets in case of accidents. Tragedy will creep in whenever and wherever we don't keep an eye on it.
Unserious company mister sir
No hi vis vis or protection and amateurs at best for drillers! Would not comply to uk standards.