Of the 40 posts on this thread, only 4 are related to the original post. 
The original post itself is OT, and subsequent discussions are wayyyyy OT to the original post.
Thats the beauty of this board, that it sometimes can be like teatime for old ladies. Just meeting and chatting, communicating, without ideology, without fighting, insulting and posts pulled. Isnāt that great?
Btw: Iāve heard sometimes even financial matters are discussed. So all is good 
ā¦ like teatime for old ladies.
Who you callinā a tea drinker?
Jim
continuing the off topic discussionā¦
In 2,500 of the buildingsā 4,000 piles, a construction crew has been drilling holes, filling them with wet concrete, and dropping in the tubing to create āenergy piles.ā
https://www.fastcompany.com/40484709/googles-new-office-willā¦
andā¦
āThis building will operate with carbon-free energy 90% of the time, and weāre hoping through operational improvements weāll over the years get to the full 100%,ā Tahir said.
https://www.mv-voice.com/news/2022/05/17/google-opens-the-doā¦
ciao
Saul Goodman
Nice description of the design thoughts and realization for Googleās new Bay View campus.
Over 1M sq ft & ~0 carbon footprint!
Designing to accommodate the unknown future needs is especially interesting.
ciao
closed loop doesnāt need ground water
ā¦ but it helps.
Geothermal is a great addition to any heat pump*.
To optimize, it takes:
Excellent understanding of your micro ground conditions by a hydrogeologist
Approval from your local government (and spouse!) to tear into the yard
Enough land to bury the designed couple
Mild (cold+)enough climate to make it economic
Geothermal as a heat store works well if the ground water flow is minimal. Geothermal as a āconstant coupleā works well if the ground water flow is high. In between, you end up with a less economic system.
Many, many geothermal systems today have very limited capacity (still enough for a house) and inefficiencies due to low temperature differences between the ground and the application.
When ground conditions allow
+temperate climate north of 40 latitude is generally seen as the best opportunity for loops.
The ideal scenario for geothermal is ground water conditions in the low 40s/high 30s F and a secondary system to plus up the Q (delivered heat) to temperatures acceptable to your chief financial officer. Having said that, many systems get along fine in suboptimal conditions because they are oversized (more expensive) and competing with even more expensive replacement or operating cost equipment.
Of note: the Netherlands is widely seen as the epicenter of geothermal and are accepted as the technology experts in laarger scaale projekts.
Who you callinā a tea drinker?
Jim
Relax. I drink tea and whisky.
and red wineā¦
and martinisā¦
Tea in moderation is no vice.
What is wrong with being an OLD LADY?
lolš¤©