Home › Forums › SUSTAINABLE CONSTRUCTION, ENERGY and WATER CONSERVATION › Sustainable Energy & Energy Conservation › Evacuated tube solar hot water
March 24, 2014 at 12:36 am #258121
G’day, came across evacuated tubes today…anyone wanna share any experiences with them?
Has anyone had both flat panel and evac tubes that they could compare?
I’m doing some research towards my future build and any info would be appreciated.March 24, 2014 at 2:04 pm #535466SnagsMember
I have the t00bs
They are excellent,I have only had to turn the electric boost on about 2 or 3 days a year.
The only negative is you are relying on a computer that monitors temps of top and bottom of tank and roof and turns a pump on to circulate water to maximise heat.
A few year later its working well but it will obviously fail at some point.
Nothing will last for ever but if/when I was to replace the system in the future it would be for a more low tech version.
Though I could replace the components pretty cheaply with out too much hardship if they fail today.
Im just concerned about being tied to corporations that may fail in a post peak oil induced economic collapse.
The upside is massively reduced power bills which will be used to repair or replace as needed in the future.
Its a good investment environmentally and economically.March 24, 2014 at 2:40 pm #535467
Thanks for the reply, how big is your tank and how many people does it service.
How long have you had it, what state are you in?
How many tubes do you have?
Lots of questions I know…..
ThanksMarch 24, 2014 at 2:55 pm #535468SnagsMember
From the Apricus website
• 1-2 Bedrooms: 20-22 Tubes with a 250ltr Tank
• 3-4 Bedrooms: 30 Tubes with 315ltr Tank
• 4+ Bedrooms: 40 Tubes with 400ltr Tank
I am 2 bedroom 2 people mainly Qld.
…..forgot Ive had it for about 3 yearsMarch 24, 2014 at 9:01 pm #535469
ThanksMarch 25, 2014 at 10:04 am #535470FishfoodMember
Give this bloke a ring they have imported thousands over the last few yearsAugust 20, 2014 at 11:38 pm #535471AlcioneMember
Im a little late getting to this post 🙁
I have a 24 tube system. Bought it from solaroz (search online for them). Cost less than 1500 delivered to Tassie. Its been up for almost 3 years now and works very well. Cost was reasonable and service excellent. ITs a 250ltr which is ample for our little bush cabin. It has a manual electrical boost option via a generator. During winter solar down here is pretty useless for 2-3 months so we have a wetback on the combustion stove which heats the water to boiling point in about 7 hours if we let it. Overall, very happy with the system.
My only beef with the system is during peak summer, the water boils and I have to get on the roof with a small tarp to cover the tubes. Someone should invent a little gizmo which would do this automatically. Like a blind pulling across the tubes.
On the point of reliance on another company for future servicing or parts, I absolutely agree. If I had a decent workshop and time, I would have built this system http://www.solarfriend.co.uk/August 30, 2014 at 12:26 am #535472BullseyeMember
G’day Alcione, re your solaroz wetback model, are the evacuated tubes water filled? Thanks.August 5, 2015 at 6:12 am #535473
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