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5th Dec 2021 Login  
Ask an Expert

Have a general question on any aspect of renewable energy technology?

Registered users may post questions here and our resident experts will attempt to provide answers.

This area of the Renew-Reuse-Recycle site is moderated, so it may take a little while for your question to appear.

CL [Ask an Expert] 2013-01-24 18:02:47 | Comments: 4
Hi All,

Does anyone know how often we need to replace the antifreeze liquid in our ground source heat loops, also does it all need to be replaced or can it be topped up by adding some new and replacing some old.

I am getting mine serviced and the engineer said they will test the antifreeze and replace if necessary at 150 litres in the system this could work out to be quite expensive, does any one have any experience of this.


Phil Norris [Ask an Expert] 2013-01-23 17:55:31 | Comments: 1
Average July Windspeeds at Goodwood
Iain McTaggart [Ask an Expert] 2012-07-24 15:39:57
Ground source or air souce?

Acheiving band D with the EPC to get higher pv cell feed in tarriff and ground source grant.

Paul Henderson [Ask an Expert] 2012-02-10 18:27:13 | Comments: 1
My sons are trying to resuscitate an old Proven 15KW!

Tony Noble [Ask an Expert] 2010-12-21 10:43:48 | Comments: 3
Does anybody have any info I could research, on the net, for the above application?
Annette Gibbons [Ask an Expert] 2010-11-01 17:36:44 | Comments: 1
Can you help and advise
Chris Finnigan [Ask an Expert] 2010-10-03 21:20:16 | Comments: 3
Power possible from vertical turbine.
j. hanford [Ask an Expert] 2010-08-20 09:10:35 | Comments: 3
need advise on how large a wind turbine we would need for 5 acres to generate at least 2000 kw ea month.
Hilary White [Ask an Expert] 2009-10-06 10:33:05 | Comments: 3

We installed a 2.5kW battery charging Proven last year. Our client and we have now concluded that the performance is poor.

With the dump loads disconnected and a good wind the machine is producing no more than 800W.

Any idea what might be the problem? I do not think the cable drop is too high.

Hilary White

Peter [Ask an Expert] 2009-08-22 08:51:17 | Comments: 2
Does anyone have any experience please of this turbine?
Alexei Vodopianov [Ask an Expert] 2009-06-25 15:28:37 | Comments: 7
I would like to install the Proven 6 at home in Cyprus.If some one knows
how to earth the tower.I ve heard the Proven towers have a earth point.I also know lot of towers connected to the earth rod with 16 sq.mm cable.Is ity thesame with 15 m Proven tower?Any ideas will be much appriciated.
Simon Ridout [Ask an Expert] 2008-12-03 08:43:28 | Comments: 1
Help or advice please.
Norman McKinley [Ask an Expert] 2008-09-30 11:50:59 | Comments: 3
Looking for an answer on recycled plastic supermarket trolleys versus recycled traditional steel trolleys.
Peter Harris [Ask an Expert] 2008-09-12 15:27:00 | Comments: 6
Is it possible to improve CWI in a house that has rigid foam insulation aleready?
John Bown [Ask an Expert] 2008-09-04 17:20:10 | Comments: 5
I have been asked to source a generator that is compatable for G59 acceptance... I have never heard of this and would like to know if anyone can help me with some information about these forms...

Sarah Hurn [Ask an Expert] 2008-05-08 14:03:32 | Comments: 1
How do I recycle mine?
Peter Henderson [Ask an Expert] 2008-01-01 16:49:21 | Comments: 5
We need a heating system powered by electricity. Has anyone changed from oil to Electric heating and what did you choose?
Mick [Ask an Expert] 2007-12-07 12:23:56 | Comments: 9
Over the last week we have had great wind
I have produced good out put
but I notice in very hi winds ...say 50Mph ..the turbine disconnects from the grid
The windy boy panels say : line distrurbance ..over voltage

Any advise

it seems I am looseing out


muymalestado [Ask an Expert] 2007-09-10 10:54:00 | Comments: 1
Does anyone have knowledge of sources of re-cy plastic 'boards' which the local school can use to make outdoor things?

And, what does one use to fix these? Screws? Nails? Bolts?

The first target is a picnic table.


Peter [Ask an Expert] 2007-06-15 09:26:27 | Comments: 12
We are considering the installation of ground source as a retro-fit to an existing hot water and heating system. Advice would be appreciated!
Tim Rutherford [Ask an Expert] 2007-06-14 18:52:28 | Comments: 3
It looks like we are going to get a refusal for a 6kW Proven because our site is too quiet!
Nigel Wilson [Ask an Expert] 2007-05-17 11:16:32 | Comments: 6
I'm looking for help and advice related to my rejected application NYM/2006/0591 and my appeal against the decision.
Barbara Welford [Ask an Expert] 2007-05-16 08:36:47 | Comments: 21
Seeking planning permission for a wind turbine in a National Park.
Nigel Wilson [Ask an Expert] 2007-02-13 10:10:25 | Comments: 5
Here with a 3 minute speech I am making to 26 members on 15th Feb

If you can add anything or if I've missed anything please let me know.

(Editor's note: we would like to invite comments from any and all people with experience of appealing against refusals to grant permission for wind turbines in the UK. Pointers to precedents or the documentation relating to successful appeals are especially welcomed.)

Nigel Wilson [Ask an Expert] 2006-12-14 16:43:17 | Comments: 10
I attach a copy of the Notice which is to appear in the Whitby Gazette later this month.
I object to the final sentence under Other Information.
Is there anything I can do about it or should I just leave it?
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