Cheap efficient overnight cooling

Acuario · 06-12-15, 01:42 AM

I'm sure this has been done before but maybe will inspire others..

Our summer days can get very hot in Spain but the nights are much cooler. Leaving the Windows open to let cool air in works to a degree but there seems to be little air movement at night so the cooling isn't great.

I'm not a fan of air conditioning so although we have it in the bedroom I've rarely used it and the few times I have it has just been to cool the bedroom before going to bed, I've not left the machine running overnight.

So to capitalise on the lovely cool air I decided to build a window fan system using cheap table top fans. I found some 30cm fans that were very cheap on ebay and then simply cut a piece of foam board to the size of the open window and mounted 4 fans in it. The fans are mounted so they blow from inside to outside, pulling cool air in through any open window. As we have window blinds I can just lower the blind if I don't need to use the fans.

It works extremely well, can be easily regulated (plug in as many fans as I need), and does a great job of pulling in cool air.

Acuario

06-12-15, 01:42 AM	#1
Acuario Apprentice EcoRenovator Join Date: May 2011 Location: Tortosa, Spain Posts: 221 Thanks: 2 Thanked 81 Times in 46 Posts	Cheap efficient overnight cooling I'm sure this has been done before but maybe will inspire others.. Our summer days can get very hot in Spain but the nights are much cooler. Leaving the Windows open to let cool air in works to a degree but there seems to be little air movement at night so the cooling isn't great. I'm not a fan of air conditioning so although we have it in the bedroom I've rarely used it and the few times I have it has just been to cool the bedroom before going to bed, I've not left the machine running overnight. So to capitalise on the lovely cool air I decided to build a window fan system using cheap table top fans. I found some 30cm fans that were very cheap on ebay and then simply cut a piece of foam board to the size of the open window and mounted 4 fans in it. The fans are mounted so they blow from inside to outside, pulling cool air in through any open window. As we have window blinds I can just lower the blind if I don't need to use the fans. It works extremely well, can be easily regulated (plug in as many fans as I need), and does a great job of pulling in cool air. Acuario Attached Thumbnails Last edited by Daox; 06-12-15 at 09:34 AM..