Tue, 19 Dec 2023 08:00:06 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243725#Comment_243725 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243725#Comment_243725 Sat, 09 Jul 2016 12:38:43 +0100 Boreas Anybody had any experience with solar-powered fans? I'm looking at getting one from Solarshop. It has a battery backup and I'm wanting to ventilate a ground floor room with a 130mm ducting already installed leading directly up to the terrace where I plan to mount the panel.
The property is in Spain.
Thanks.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243750#Comment_243750 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243750#Comment_243750 Sun, 10 Jul 2016 07:43:12 +0100 jon
Delay needs to be set as high as possible (ie 10mins for mine). It doesn't extract well enough for a power shower but would suit almost all other bathroom applications.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243753#Comment_243753 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243753#Comment_243753 Sun, 10 Jul 2016 08:20:57 +0100 SteamyTea http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243764#Comment_243764 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243764#Comment_243764 Sun, 10 Jul 2016 16:10:42 +0100 Boreas How long it would need to run to pay for itself I really don't know!
I guess I want to know if it would last 5 plus years and not conk out in 2 months....]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243767#Comment_243767 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243767#Comment_243767 Sun, 10 Jul 2016 18:55:46 +0100 SteamyTea You could make yourself one, then you know the quality. Would cost a lot more than £100 mind you.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243779#Comment_243779 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=243779#Comment_243779 Sun, 10 Jul 2016 21:33:53 +0100 gyrogear
Maybe natural ventilation would work - for free !

gg]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244007#Comment_244007 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244007#Comment_244007 Thu, 14 Jul 2016 18:53:35 +0100 jon
To make it work UK, you have to mount almost vertically to get max winter power. Batteries and solar units largest costs.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244008#Comment_244008 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244008#Comment_244008 Thu, 14 Jul 2016 19:17:50 +0100 Ed Davies Posted By: BoreasHow long it would need to run to pay for itself I really don't know!If it uses a large proportion of battery power (e.g., 18 out of every 24 hours) then probably never as battery power tends to be as about as expensive as mains electricity even if the recharge is free because of the depreciation of the batteries for each cycle of charge/discharge. For larger well-managed batteries it's not quite so fierce but it's still a challenge to match grid wholesale electricity prices.

That's why you don't hear much of people charging batteries on E7 then using them to run things during the day.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244179#Comment_244179 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244179#Comment_244179 Tue, 19 Jul 2016 10:37:44 +0100 Boreas http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244184#Comment_244184 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244184#Comment_244184 Tue, 19 Jul 2016 11:08:40 +0100 Nick Parsons http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244435#Comment_244435 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14384&Focus=244435#Comment_244435 Sat, 23 Jul 2016 00:51:25 +0100 gyrogear Posted By: Boreasyou'd have to see the room as it's a basement and windows are not an option.

OK, I get that no windows, but a decent-sized low-placed air intake grille would suffice to let cold (dense) air in, and a high-placed offtake grille would let the warmed air out... Natural (passive) ventilation thru air buoyancy... If required, make it active with a simple PC fan (12 V) on the latter, to extract or expel the air.
If you can get your intake air to come in over a water feature, so much the better...
If it is on the colder side of the property, so much the better, and if the extraction is on the warmer side, better even more ! You really can do air conditioning with the sun...

gg]]>