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Author Topic: Moving my system  (Read 4925 times)
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« on: July 28, 2019, 10:31:33 PM »

Hi all (its been a long time since I was last in this place)

My ST has been working well for some time now giving few issues and I am very happy with it, but, I need to move it to another area on the roof to make way for PV.

In the new position (which is a bit tight unfortunately) I need to shorten the outer half dozen tubes from 1.8m to around 1.2m / 1.5m leaving the other 24 tubes at 1.8m.  I canít find any ST tubes less than 1.8m long so I was wondering if the demo tubes might work in this instance.  Any views on this?


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« Reply #1 on: July 29, 2019, 07:05:40 AM »

You donít mention existing tube diameter. I seem to remember that demo tubes are 0.6m long. Navitron sell balcony tubes at 0.85m long but 58mm diameter. It depends on the teat diameter being the same. I worry that the shorter tubes would be ineffective as they never achieve as high a temperature as the long ones. You are also needing to do some mechanical work on the frame.
« Last Edit: July 29, 2019, 08:45:49 AM by stannn » Logged

2.45 kWp PV (Navitron supply), 40 evacuated tubes (Navitron supply), Clearview 650 log burner with back-boiler heating cottage and water, 2 off 50W border collies, 1 off 35W cat, 1 off 25W cat.
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« Reply #2 on: July 29, 2019, 07:52:33 AM »

Thanks Stan

Yes the existing are 58 dia.  I was thinking that even if the short ones do not produce masses they will plug the hole.  Yep aware the frame needs modifying, hacksaw is at the ready.

Cheers. David
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