Navitron Renewable Energy and Sustainability Forum

SOLAR THERMAL => Solar Thermal Systems => Topic started by: syeman on September 03, 2018, 11:07:41 AM

Title: Evacuated tube covers
Post by: syeman on September 03, 2018, 11:07:41 AM
Hi I live at the end of the electricity supply line and find there's phases where my electric ity is  frequently turned off for new builds, maintenance etc I do not like letting my panels ( evacuated tubes) stagnate I found a pure sine wave converter very helpful which i got from an old post on this forum which allows me to run them off a car battery, but while I'm around I would rather just throw on a cover panels are on gable end above a lean to so access is good. Does anyone have experience of these i was thinking of getting  as a last resort a tarp with bungees.

Thanks Simon

Title: Re: Evacuated tube covers
Post by: kristen on September 03, 2018, 11:21:19 AM
I put some old curtains over mine (during maintenance). Hadn't realised the curtains had weights in the bottom lining corners, to make the curtains hang well, and they flapped about in the wind and bust a couple of tubes :( So something to beware of, but other than that worked just fine.

Title: Re: Evacuated tube covers
Post by: Countrypaul on September 03, 2018, 03:27:11 PM
Have you considerd using a UPS to maintain the power to the ST system even if there are quite long power cuts  (I mean minutes or a couple of hours rather than seconds, or days). You would probably be better off with an older model UPS as they don't ten to just cease functioning after 15 mins. External battteries could be used with the UPS - see some of the post by Biff for details. Seems a big waste to just shut everything down due to the electric being off. 

Title: Re: Evacuated tube covers
Post by: skyewright on September 04, 2018, 11:29:36 AM
My neighbour uses a spare piece of 'Tyvek' building fabric. It's light but tough. She added a cord at four corners and ties it on if she is going to be away for a while in summer to prevent over heating.

Title: Re: Evacuated tube covers
Post by: syeman on November 22, 2018, 02:11:22 PM
Thanks for your replies I have been unable to log in for a while my mistake. Some good tips I shall think about each of them.

Title: Re: Evacuated tube covers
Post by: Jonzjob on April 22, 2019, 02:13:30 PM
I have only just found this thread, but when we lived in the south of France we had an array of 50 x 58mm tubes to heat our pool. In the winter and when the pool got up to temp in the summer I used to cover them. I had 2 covers made made for me by Atwools Whitminster, near Gloucester. They had the same strip as you get on a caravan awning and some eyelets on the bottom corners. I  fixed the caravan awning channel on the collector boxes. When I wanted to cover the tubes I just slipped the covers on to the channel and secured the bottom to the frame with hooked bungy cord. It worked a treat and just took a couple of minutes to fit. The cover material was the same stuff as is used on the tautliner truck side and as tough as old boots!

This is the company  . I have no association with them, just a very satisfied customer.