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DIY solar thermal?
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vegplot



Joined: 19 Apr 2007
Posts: 21301
Location: Bethesda, Gwynedd
PostPosted: Thu Jan 29, 15 3:01 pm    Post subject: Reply with quote
    

Hairyloon wrote:
Mark's answer was infinitely superior.


What is it that makes Mark's answer better?

Hairyloon



Joined: 20 Nov 2008
Posts: 15425
Location: Today I are mostly being in Yorkshire.
PostPosted: Thu Jan 29, 15 3:06 pm    Post subject: Reply with quote
    

vegplot wrote:
Hairyloon wrote:
Mark's answer was infinitely superior.


What is it that makes Mark's answer better?

It contains actual answers.
Yours just says "the professionals do it better. Nyah nyah."

vegplot



Joined: 19 Apr 2007
Posts: 21301
Location: Bethesda, Gwynedd
PostPosted: Thu Jan 29, 15 3:09 pm    Post subject: Reply with quote
    

Hairyloon wrote:
vegplot wrote:
Hairyloon wrote:
Mark's answer was infinitely superior.


What is it that makes Mark's answer better?

It contains actual answers.
Yours just says "the professionals do it better. Nyah nyah."


I wasn't expecting a reply as the question was tongue in cheek.

But thanks.

Mutton



Joined: 09 May 2009
Posts: 1508

PostPosted: Sun Feb 01, 15 9:51 pm    Post subject: Reply with quote
    

Go look at www.builditsolar.com.

All sorts of self-build designs and data on how well they work. Some include costs to build as well.

I've always had a fancy for a solar shed.......

Tavascarow



Joined: 06 Aug 2006
Posts: 8407
Location: South Cornwall
PostPosted: Mon Feb 02, 15 8:45 am    Post subject: Reply with quote
    

A lot of the professional instalers are going away from the Chinese evacuated tubes (Navitron) back to flat plates. Problems with maintaining vacuum.
If you can instal your panel below the tank so it works on gravity & fit a non return, so when the panels colder than the tank it doesn't suck the heat back, fairly cheap & easy IMHO.

vegplot



Joined: 19 Apr 2007
Posts: 21301
Location: Bethesda, Gwynedd
PostPosted: Mon Feb 02, 15 9:39 am    Post subject: Reply with quote
    

Tavascarow wrote:
A lot of the professional instalers are going away from the Chinese evacuated tubes (Navitron) back to flat plates. Problems with maintaining vacuum.
If you can instal your panel below the tank so it works on gravity & fit a non return, so when the panels colder than the tank it doesn't suck the heat back, fairly cheap & easy IMHO.


Or perhaps installers breaking too many tubes?

I prefer the flat plate collectors. The may be less efficient but are more reliable and tougher they also look better IMHO.

Mutton



Joined: 09 May 2009
Posts: 1508

PostPosted: Mon Feb 02, 15 11:46 am    Post subject: Reply with quote
    

I worked with glass vacuum equipment a lot of years ago - not glass solar hot water tubes - but I spent a lot of my life leak hunting.....

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