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Tig welding a copper manifold

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Tig welding a copper manifold

Postby Simclardy » Sun Aug 06, 2017 7:57 am

I just finished connecting all my refrigerant lines to my new solar heat pump system. I made two manifold so I could feed the 8 solar panels. The array photo is before I hooked it all up. Also the top route is regular pv panels. Cheers
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Re: Tig welding a copper manifold

Postby Simclardy » Sun Aug 06, 2017 8:57 am

Here is the manifold installedImage

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Re: Tig welding a copper manifold

Postby Poland308 » Sun Aug 06, 2017 9:03 am

That's cool. Pun? What refrigerant? Or is it a what're. ( water) source heat pump conversion?
^ stupid auto correct
Last edited by Poland308 on Sun Aug 06, 2017 2:46 pm, edited 1 time in total.
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Re: Tig welding a copper manifold

Postby Simclardy » Sun Aug 06, 2017 10:31 am

It's r410a

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Re: Tig welding a copper manifold

Postby Arno » Mon Aug 07, 2017 2:42 am

Very cool! (pun not intended :roll: )

Are you also fitting the heat pump panels sandwiched behind the photovoltaic ones to draw excess heat away from them as well?

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Re: Tig welding a copper manifold

Postby Simclardy » Mon Aug 07, 2017 9:36 pm

Arno wrote:Very cool! (pun not intended :roll: )

Are you also fitting the heat pump panels sandwiched behind the photovoltaic ones to draw excess heat away from them as well?

Bye, Arno.
No I'm not, but that is a good question. Companies have tried to make duel purpose panels to do just what you describe and the end result is that it does not do ether quite as good. But technology changes all the time and that could be a possibility.

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Re: Tig welding a copper manifold

Postby kimmy » Tue Aug 08, 2017 7:59 am

That looks great! Well done! :shock:
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Re: Tig welding a copper manifold

Postby Simclardy » Tue Aug 08, 2017 8:37 pm

kimmy wrote:That looks great! Well done! :shock:
Thanks! I fired it up last night and was pleasantly surprised at how quiet the unit is. Still need to hook up water lines so no heat yet.

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Re: Tig welding a copper manifold

Postby bobruddy » Thu Nov 16, 2017 6:58 am

I love the project. Would have never thought to tig copper. Do you use a copper filler or some other filler?

Also do you have information on your heat pump system or are you modeling it off someone else's you could share URL?.

I've had many thoughts about modifying my air source heat pump to use solar energy. The one I had would be to use a water tank heated by solar as a thermal energy bank and post heat the refrigerant before it goes back to the indoor compressor. Hence it would heat up out side first, then I could give it a boost.
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Re: Tig welding a copper manifold

Postby Poland308 » Thu Nov 16, 2017 8:11 am

In an air source heat pump your actually boiling off liquid refrigerant to pick up the heat. If you do use it to run through a water bath your going to need to watch the water temp close. To high and you will drive up your suction pressure, that in turn will drive up discharge pressure and shorten the life of your compressor. To cold and you run the risk of creating an ice builder, the ice can crush or puncture your lines causing leaks or line restrictions. And you need to use treated water, and monitor your water quality in your bath.
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