> From: Haudy Kazemi mailto:kaze0...@umn.edu>>
>
> Hydronic systems nicely avoid these problems (but like most other design
> decisions come with different challenges, which in this case means
> requiring freeze protection).
Which could be as simple as propylene glycol, no?
Considering that any
Russ Finch's project uses air tubes in the ground + solar exposure + earth
sheltering for greenhouse heating. The websites and video offer some ideas.
https://greenhouseinthesnow.com/
https://www.youtube.com/watch?v=ZD_3_gsgsnk
http://netnebraska.org/article/news/1007375/visit-nebraska-greenhous
For the digging cost please then consider using the ground only as a heat
source/sink for a heatpump. Trying to use the ground temperature at
existing value has such a low delta-T as to be useless compared to the
cost. Bob
On Sun, Mar 21, 2021 at 6:48 PM BobK via EV wrote:
> Lee Hart, For my e
Lee Hart, For my earth tubes I was thinking of at least 8 inches diameter. I’ve
not decided on the number of tubes. The end away from the house would drain
into a sump. The sump would be enough for a small sump pump that would get rid
of the water. Any suggestion are welcome.
Bobby Keeland
Lou
On 3/21/21 1:54 PM, Peri Hartman via EV wrote:
It's pretty expensive if you bore 6". But I suspect a lot cheaper at
1.5". I did some searching but can't find any prices. However, based on
volume, 1.5" is about 6% of 6". Therefore the drilling should be an
order of magnitude less.
Around he
via EV"
To: "Bobby Keeland via EV"
Cc: "Lee Hart"
Sent: 21-Mar-21 11:42:14 AM
Subject: Re: [EVDL] Projects
Bobby Keeland via EV wrote:
I have no idea of how much it cost to drill a 100 ft or more well through
clay soil. I do agree that a vertical pipe would prob
Robert Bruninga via EV wrote:
You hit the nail on the head. The migration of all our high-power systems
to HV DC is the topic of my book (EV's, Solar', heatpumps, and all modern
power supplies). Any power device that uses "variable speed" such as new
airconditioners and other appliances are inte
Bobby Keeland via EV wrote:
I have no idea of how much it cost to drill a 100 ft or more well through
clay soil. I do agree that a vertical pipe would probably be more effective
than a horizontal pipe. We had a water well drilled in southwest Missouri
some years ago. With casing but no pump that
Robert Bruninga via EV wrote:
The cheapest DIY ground-source heating is to hang an old Air
Conditioner from the floor joists of a popular central room in the house
and cut a hole in the floor to connect the hot side of the AC to the room.
The cold side remains in the basement air. A 10,000 BTU A
Bobby Keeland via EV wrote:
Right now I’m more interested in working on the 1951 Chevy pickup (we
actually use pickups as pickups rather than as a manly car).
So do I. What a strange idea!
There is a guy on YouTube who is showing his complete process of moving
a 1952 Chevy pickup onto an S-10
Bobby Keeland via EV wrote:
Yes Peter VanDerWal (thanks for the reply) I am aware of all that you said.
I was planning on using at least 4 smooth wall tubes that are buried about
10 feet deep with a downward slope away from the house. The earth tubes
will be about 100 feet long, and the soil here
The cheapest DIY ground-source heating is to hang an old Air
Conditioner from the floor joists of a popular central room in the house
and cut a hole in the floor to connect the hot side of the AC to the room.
The cold side remains in the basement air. A 10,000 BTU AC unit becomes a
20,000 BTu heat
You hit the nail on the head. The migration of all our high-power systems
to HV DC is the topic of my book (EV's, Solar', heatpumps, and all modern
power supplies). Any power device that uses "variable speed" such as new
airconditioners and other appliances are internally using 365 VDC which is
a
al Message --
> From: "Bobby Keeland via EV"
> To: "Peter VanDerWal"
> Cc: "Bobby Keeland" ; "Electric Vehicle Discussion
> List"
> Sent: 21-Mar-21 9:31:12 AM
> Subject: Re: [EVDL] Projects
>
> >Yes Peter VanDerWal (thanks for t
erWal"
> Cc: "Bobby Keeland" ; "Electric Vehicle Discussion
> List"
> Sent: 21-Mar-21 9:31:12 AM
> Subject: Re: [EVDL] Projects
>
> >Yes Peter VanDerWal (thanks for the reply) I am aware of all that you
> said.
> >I was planning on using at least 4 s
Hi Peter and all,Earth tubes almost can't avoid moisture and molds making air
versions dangerous to breathe air from them. You really need a coolant based
system, not air.Minisplits are a far better solution and some work directly
from batteries now both in 48vdc and 365vdc nom.. I hear some v
ps://quietcleanseattle.org/ >>
-- Original Message --
From: "Bobby Keeland via EV"
To: "Peter VanDerWal"
Cc: "Bobby Keeland" ; "Electric Vehicle Discussion
List"
Sent: 21-Mar-21 9:31:12 AM
Subject: Re: [EVDL] Projects
Yes Peter VanDerWal (thanks
Yes Peter VanDerWal (thanks for the reply) I am aware of all that you said.
I was planning on using at least 4 smooth wall tubes that are buried about
10 feet deep with a downward slope away from the house. The earth tubes
will be about 100 feet long, and the soil here is almost pure clay
(southern
Bobby, have you done any research on Earth Tubes? Not just looking up
testimonials and anecdotes, but looked for actual studies?
I was really yped about earth tubes for a while until I looked into them and
found a few studies. I found a lot of people claiming that all they did was
dig 2 foot
Lee Hart wrote:
... not to mention electric cars. :-)
Bobby Keeland wrote:
Actually I have added a few things to the Model 3, but what I would really
like to do is work on converting my 1951 Chevy pickup to electric.
Unfortunately someone from EV West said that for that pickup I would have
to
In a previous posting I said:
http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210319/15ea2a37/attachment.html>
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