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Search: Posts Made By: solarhotairpanels
Forum: Solar Heating 01-11-21, 10:28 PM
Replies: 14
Views: 1,288
Posted By Acuario
If your pump isn't shutting down then it sounds...

If your pump isn't shutting down then it sounds to me like there is a fault with the controller. From above, with an 8 degrees difference the pump should stop, you say it continues to run (but...
Forum: Solar Heating 01-10-21, 07:26 PM
Replies: 14
Views: 1,288
Posted By jeff5may
Main idea is: if it's working, play with it until...

Main idea is: if it's working, play with it until you make it short cycle. Then dial it back until it doesn't. Pick a sweet spot and drive it like you stole it.
Forum: Solar Heating 01-10-21, 05:28 PM
Replies: 14
Views: 1,288
Posted By skyking
you clarified your setup, and I agree that...

you clarified your setup, and I agree that raising the diff temp is the first thing to try.
Forum: Solar Heating 01-10-21, 02:15 AM
Replies: 14
Views: 1,288
Posted By SDMCF
Does your controller always run the pump at full...

Does your controller always run the pump at full speed? Or does it keep pumping but modify the pump speed based on the delta? Is it capable of changing the pump speed?
Forum: Solar Heating 01-09-21, 04:41 PM
Replies: 14
Views: 1,288
Posted By skyking
My best guess is, your system is suffering from...

My best guess is, your system is suffering from transportation losses. The collector temp is X, but you lose so much on the way back to the tank that you are pushing a rope uphill, so to speak.
I...
Forum: Solar Heating 01-06-21, 02:05 PM
Replies: 219
Views: 117,231
Posted By jeff5may
The spring loaded check valves work pretty well....

The spring loaded check valves work pretty well. The ones without a rubber seal are cheaper than the ones with the seal. Easy peasy breezy. Any orientation installation for quick and simple.
Forum: Solar Heating 01-06-21, 02:49 AM
Replies: 6
Views: 927
Posted By u3b3rg33k
PEX wouldn't work so great, copper would be fine....

PEX wouldn't work so great, copper would be fine. plenty of old oil fired systems used those without issue (well, until they caked up with minerals). it's all about rate of heat transfer.
Forum: Solar Heating 01-04-21, 12:46 AM
Replies: 6
Views: 927
Posted By MN Renovator
The coil inside of the water heater would be...

The coil inside of the water heater would be exchanging the heat from the coil into the hot water in the tank, so it's not going to "run out after 3-7 gallons" as you said it, the capacity of the hot...
Forum: Solar Heating 12-31-20, 10:47 PM
Replies: 6
Views: 927
Posted By jeff5may
Just about all the systems that I've seen that...

Just about all the systems that I've seen that actually work well use the second method you describe. Small e-tube collector loop volume, exchanging heat into a larger tank, usually insulated well.
Forum: Geothermal & Heat Pumps 12-30-20, 01:55 PM
Replies: 3
Views: 863
Posted By jeff5may
So with an understanding of the overall heat pump...

So with an understanding of the overall heat pump refrigeration cycle, I will focus on the geothermal/ground source end of the system.

With a ground loop based system, the two main things that...
Forum: Geothermal & Heat Pumps 12-30-20, 11:24 AM
Replies: 3
Views: 863
Posted By jeff5may
Ok so a little background on the phase change...

Ok so a little background on the phase change heating and cooling system first.

Any air conditioning or heating system that relies on the phase change system moves heat via mass flow of...
Forum: Solar Heating 12-24-20, 09:58 AM
Replies: 50
Views: 17,931
Posted By skyking
Pat, well done. I really appreciate you coming...

Pat, well done. I really appreciate you coming back with the reports.
We are still in the house in the woods with too much shade, but now I am approaching retirement and looking to build our last...
Forum: Geothermal & Heat Pumps 11-26-20, 06:21 PM
Replies: 220
Views: 55,060
Posted By MEMPHIS91
Unit is still running! No issues as of yet.

Unit is still running! No issues as of yet.
Forum: Solar Heating 03-05-20, 09:35 AM
Replies: 23
Views: 16,922
Posted By menaus2
Just an update on the system. It's been operating...

Just an update on the system. It's been operating for 9 years or so without a hitch although there have been some changes made to it years ago. First, I closed off the space between the collector and...
Forum: Solar Heating 12-10-14, 11:53 PM
Replies: 53
Views: 14,130
Posted By SDMCF
Yes. I have 4 x 20 tube collectors with twin...

Yes.
I have 4 x 20 tube collectors with twin wall tubes, and 1 x 20 tube collector with single wall, larger diameter, tubes. The larger larger diameter tubes were more expensive. I haven't been able...
Forum: Solar Heating 11-06-13, 08:35 AM
Replies: 50
Views: 17,931
Posted By AC_Hacker
Thanks for the PDFs. I think it's more useful to...

Thanks for the PDFs. I think it's more useful to readers of your work if the discussion happened in the open, so that everyone learned from the questions & responses, rather that just individuals.
...
Forum: Solar Heating 11-06-13, 08:11 AM
Replies: 50
Views: 17,931
Posted By Daox
I only just read through the hot air panel one. ...

I only just read through the hot air panel one. REALLY nice work. Great document to help people build their own. Thanks! I really wish more people would make these kind of panels. They're so...
Forum: Solar Heating 11-05-13, 06:48 PM
Replies: 50
Views: 17,931
Posted By jeff5may
Both links lead to 404 errors. EDIT: Now it...

Both links lead to 404 errors.

EDIT: Now it works. The hot air collector looks like it would work really well on a trailer or home with a package unit heater. It would tie right in.
Forum: Solar Heating 09-15-11, 11:53 AM
Replies: 23
Views: 16,922
Posted By AC_Hacker
Well, menaus2 is planning to use air for his...

Well, menaus2 is planning to use air for his transfer medium. It does have certain advantages, one of which is that if it leaks, it doesn't wreck everything.

So, he could store heat in a rock bin....
Forum: Geothermal & Heat Pumps 05-27-11, 02:55 PM
Replies: 18
Views: 10,048
Posted By skyking
Yes, that won't be an issue. The heat exchanger...

Yes, that won't be an issue.
The heat exchanger is metal, and Solar will not flow into that unless Geo is flowing as well. The earth won't ever get to a temperature to cause that type of failure.
Forum: Wind Power 12-07-10, 12:56 PM
Replies: 13
Views: 15,190
Posted By Daox
Wooden wind generator

Wooden blades? No, all wood (nearly) construction! Pretty cool actually. Doesn't produce much power though. But, it is pretty small too.

Wooden wind generator...
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