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Search: Posts Made By: vann
Forum: Solar Heating 06-25-15, 05:53 PM
Replies: 31
Views: 9,686
Posted By vann
Mike, thanks for your insight, and for the tips. ...

Mike, thanks for your insight, and for the tips.
I did some reading after your post, trying to learn some more. I still don't understand much of the stuff. I have some questions, if you're willing...
Forum: Solar Heating 06-22-15, 07:24 PM
Replies: 31
Views: 9,686
Posted By vann
And indeed it does also protect against high...

And indeed it does also protect against high temps, the controller simply shuts of the pumps when set high temp is reached.

Is there any consensus about efficiency comparison on drainback vs...
Forum: Solar Heating 06-22-15, 05:11 AM
Replies: 31
Views: 9,686
Posted By vann
@Drake I would be very interested in reasons...

@Drake
I would be very interested in reasons why drainback systems are being abandoned in your reagion.
And yes mate, you are tackling some very important issues. "Green" and "eco friendly" are...
Forum: Solar Heating 06-21-15, 12:51 PM
Replies: 31
Views: 9,686
Posted By vann
After looking again the bellow video, it seems...

After looking again the bellow video, it seems that pressure relief mechanism is not needed with drain back systems. Because the system is not pressurized. As I understand it, the drainback water...
Forum: Solar Heating 06-21-15, 12:41 PM
Replies: 31
Views: 9,686
Posted By vann
Was thinking about that also, but than I'd have...

Was thinking about that also, but than I'd have to source the PV panel and the DC powered pump from ebay/aliexpress... and I prefer to source locally, for the guaranties (and possibly for the...
Forum: Solar Heating 06-21-15, 11:57 AM
Replies: 31
Views: 9,686
Posted By vann
My guess is that the pressure relief valve was...

My guess is that the pressure relief valve was faulty. Ether that or it was specified for activation on bigger pressure than your system is able to produce when overheated.
Yes, I'd say that this is...
Forum: Solar Heating 06-21-15, 11:32 AM
Replies: 31
Views: 9,686
Posted By vann
I will definitely be purchasing commercial made...

I will definitely be purchasing commercial made panels. But the thing is, there are really slim pickings at local shops in my country.
I'm still researching and learning about differences between...
Forum: Solar Heating 06-21-15, 05:19 AM
Replies: 31
Views: 9,686
Posted By vann
Tnx AC, and wow - a reply from the author of the...

Tnx AC, and wow - a reply from the author of the famous "The Homemade Heat Pump Manifesto" :)



Yes, but drain back phase could also occur at daytime, depending on the system dimensioning....
Forum: Solar Heating 06-20-15, 05:48 PM
Replies: 31
Views: 9,686
Posted By vann
Durability of the solar panels/collectors in Drain Back Solar Hot Water Systems

I am considering drain back solar system for domestic hot water, and was wondering about durability of the solar panels (collectors) when used in such system.

This video seems to do good...
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