Forum: Solar Heating
04-27-21, 04:43 AM
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Replies: 27
Views: 46,640
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Forum: Conservation
04-27-21, 04:06 AM
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Replies: 1
Views: 18,348
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Forum: Conservation
04-27-21, 03:59 AM
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Replies: 10
Views: 38,717
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Forum: Solar Heating
04-27-21, 03:49 AM
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Replies: 10
Views: 34,072
Interesting experiments, Jeff.
What is the...
Interesting experiments, Jeff.
What is the latitude of your location?
What elevation angle do you plan to install the panels at?
If the panels have any tilt to them, you could consider to...
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Forum: Solar Heating
12-30-20, 01:57 PM
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Replies: 27
Views: 46,640
3/4" is my favorite for most work, so I agree....
3/4" is my favorite for most work, so I agree. The trick is some times valves, flow meters and such.
There won't be any "rusty water" here, and that is because my systems will be closed. With no...
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Forum: Solar Heating
12-27-20, 02:28 AM
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Replies: 27
Views: 46,640
I didn't get to it yet. Well, I have started...
I didn't get to it yet. Well, I have started sourcing parts, but an ongoing pandemic has slowed things down a bit, to put it mildly. Also, starting a company in HK is a longwinded process. Just...
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Forum: Solar Heating
09-25-20, 03:16 AM
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Replies: 16
Views: 34,542
There are advantages and disadvantages to both...
There are advantages and disadvantages to both systems. If drainback is done right, I sincerely believe it will eventually be simpler in construction, more reliable, more failsafe, cheaper to build...
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Forum: Solar Heating
09-25-20, 03:10 AM
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Replies: 16
Views: 34,542
Thank you for that insight, Jeff5May.
I will...
Thank you for that insight, Jeff5May.
I will have more than one sensor inside a manifold (that is, not on the exit, but built into the panels themselves. I will have plenty of user capacity to...
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Forum: Solar Heating
09-18-20, 11:13 AM
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Replies: 16
Views: 34,542
Yes, of course you are right, SDMCF, I meant...
Yes, of course you are right, SDMCF, I meant horisontal. Where I have installed systems before, people are scared of drainback because there are stories about how pipes or collectors have been...
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Forum: Solar Heating
09-16-20, 03:50 AM
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Replies: 16
Views: 34,542
Thank you so much for your feedback, SDMCF.
...
Thank you so much for your feedback, SDMCF.
I know about the manifolds being vertical. The issue is if they have a kink in the middle, and leave water standing there. Of it there is any other lock...
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Forum: Solar Heating
09-10-20, 06:02 AM
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Replies: 16
Views: 34,542
Drain-back system and evacuated tubes
I am researching about drain-back, and how to make the most of it:
Efficiency and simplicity (no heat exchangers, no glycol anti-freeze, no freezing, no boiling, no auto-air-extractors, less lag...
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Forum: Solar Heating
09-10-20, 05:45 AM
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Replies: 27
Views: 46,640
ESharp, how is it going with your project, all...
ESharp, how is it going with your project, all these years later? Is it still working?
I am researching the drainback principle. Where I have built a few systems, most of every system is a closed...
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Forum: Geothermal & Heat Pumps
05-16-20, 01:06 AM
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Replies: 1
Views: 7,056
Time Flies
Welcome, osolemio.
You last visited: 04-11-15 at 11:44 AM
Private Messages: Unread 0, Total 1.
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Can't believe I haven't been on the forums for 5 years!
My main project is still running, a...
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Forum: Solar Heating
04-11-15, 05:44 AM
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Replies: 7
Views: 8,883
Sorry for all the metric stuff, like C rather...
Sorry for all the metric stuff, like C rather than Fahrenheit :)
This is just before the system is peaking today. Not fully blue sky but pretty strong at almost 900 W/m2 (sensor in the plane of...
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Forum: Solar Heating
04-11-15, 01:12 AM
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Replies: 7
Views: 8,883
Good news!
The underground heat storage was...
Good news!
The underground heat storage was NOT leaking, as we thought previously. It has now been online for about 4 days, and working just great! I might throttle it down a bit, but at the...
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Forum: Solar Heating
04-03-15, 12:54 AM
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Replies: 7
Views: 8,883
Sure!
Before that, I can say that I am...
Sure!
Before that, I can say that I am working on a presentation and information for a crowd funding run on RocketHub. I will announce it here when it launches, and will greatly appreciate your...
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Forum: Solar Heating
03-13-15, 12:43 PM
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Replies: 7
Views: 8,883
I am happy you ask that question :)
The...
I am happy you ask that question :)
The primary circuit is a glycol-water mix, to prevent freezing, secured down to -20 C (-4 F). Despite that I have a function to run to keep it from getting...
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Forum: Solar Heating
03-10-15, 01:13 PM
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Replies: 7
Views: 8,883
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Forum: Solar Heating
06-22-14, 12:31 PM
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Replies: 23
Views: 22,174
Thanks, Jeff, I will run this with my plumber,...
Thanks, Jeff, I will run this with my plumber, see what he says. I didn't get yet exactly how it works yet I can imagine how it must work. I'll make a drawing, step by step, from what you wrote, then...
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Forum: Solar Heating
06-22-14, 05:14 AM
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Replies: 23
Views: 22,174
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Forum: Solar Heating
06-22-14, 05:11 AM
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Replies: 23
Views: 22,174
Biproduct from sugar, sweet!
I see this is a...
Biproduct from sugar, sweet!
I see this is a European product, should make it even better for me. I saw that company also has another product which does boil around 105C, but it's stable up to 150...
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Forum: Geothermal & Heat Pumps
06-22-14, 03:53 AM
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Replies: 18
Views: 16,750
I hope to (finally) be online during this fall...
I hope to (finally) be online during this fall (of 2014).
For my project, I have been waiting for 4+ years now, to get some special hybrid thermal-electric solar panels from solarus.se - and it...
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Forum: Solar Heating
06-20-14, 02:41 PM
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Replies: 23
Views: 22,174
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Forum: Solar Heating
06-20-14, 02:38 PM
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Replies: 23
Views: 22,174
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Forum: Solar Heating
06-20-14, 03:39 AM
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Replies: 23
Views: 22,174
How about oils like this one?
...
How about oils like this one?
http://s02.static-shell.com/content/dam/shell/static/ind/downloads/lubes-b2b/other-shell-lubricants/heat-transfer-oil.pdf
It seems to be made for the purpose,...
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