Comments on: Solar Box Window Heater http://www.homeconstructionimprovement.com/solar-box-window-heater/#utm_source=rss&utm_medium=rss&utm_campaign=solar-box-window-heater Expert Home Improvement Advice Sat, 11 Feb 2012 13:33:24 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Winter wind negating negative pressure - Grasscity.com Forumshttp://www.homeconstructionimprovement.com/solar-box-window-heater/#comment-62648 Winter wind negating negative pressure - Grasscity.com Forums Sun, 15 Jan 2012 13:10:21 +0000 http://localhost/test/2007/12/solar-box-window-heater/#comment-62648 [...] Re: Winter wind negating negative pressure A 40mph wind gust will easily overpower the air flow of yoru fan. You want to maintain a negative pressure in your room flow. Positive is like a balloon, negative is like sucking through a straw. Sounds like you know that part. So think of your door as the open end of the straw, the fan on the other end needs to be sealed to the exhaust/window so it can suck air out of the room in a controlled manner. In general a box or tower fan equals a huge fail when trying to maintain positive or negative pressure. It is already failing and if you try to isolate it, it will burn up. In no way do they work well with filters either. Tower and box fans are just for circulation, not pulling air. Plus you are now fighting convection. Warm air always leaves a space traveling towards colder air. So as the warm air passes out your open window, cold air will flow in to replace it and travel along the floor and through or under your door. Secondary air flow fail and codl tmeps bad for your plants. Bigger temp fluctutations too so you will potentially get condensation on the walls. Then there is the secuirty issue of an open and unlocked window. If I were venting through an open window 24/7, I would open it 2" to 4" max, secure it from going any farther, build a box to fit the width of the window. Seal it all up. Inside the box would hold the fan on one end, on the other end outside it would have a 90 degree downward bend and be bug, bird and mouse proof. There are similar designs out there for passive solar heating. You would just not make it a closed loop system, you would open it to the outside. Solar Window Box Heaters - Do It Yourself and Save [...] [...] Re: Winter wind negating negative pressure A 40mph wind gust will easily overpower the air flow of yoru fan. You want to maintain a negative pressure in your room flow. Positive is like a balloon, negative is like sucking through a straw. Sounds like you know that part. So think of your door as the open end of the straw, the fan on the other end needs to be sealed to the exhaust/window so it can suck air out of the room in a controlled manner. In general a box or tower fan equals a huge fail when trying to maintain positive or negative pressure. It is already failing and if you try to isolate it, it will burn up. In no way do they work well with filters either. Tower and box fans are just for circulation, not pulling air. Plus you are now fighting convection. Warm air always leaves a space traveling towards colder air. So as the warm air passes out your open window, cold air will flow in to replace it and travel along the floor and through or under your door. Secondary air flow fail and codl tmeps bad for your plants. Bigger temp fluctutations too so you will potentially get condensation on the walls. Then there is the secuirty issue of an open and unlocked window. If I were venting through an open window 24/7, I would open it 2" to 4" max, secure it from going any farther, build a box to fit the width of the window. Seal it all up. Inside the box would hold the fan on one end, on the other end outside it would have a 90 degree downward bend and be bug, bird and mouse proof. There are similar designs out there for passive solar heating. You would just not make it a closed loop system, you would open it to the outside. Solar Window Box Heaters – Do It Yourself and Save [...]

]]> By: SolarChoice Heathttp://www.homeconstructionimprovement.com/solar-box-window-heater/#comment-40974 SolarChoice Heat Thu, 18 Feb 2010 21:08:55 +0000 http://localhost/test/2007/12/solar-box-window-heater/#comment-40974 Bringing solar heating to any home is a tremendous idea - no matter what form it comes in or whether you bought it or made it yourself. Unfortunately, I'm not a do-it-yourselfer...and not everyone is. For them the choice is to have someone build a window heater - or look for another solution. And one is out there.Here's the pitch from us.SolarChoice passive solar heaters masquerade as vertical window blinds. Operating via natural convection, cool air is drawn into the bottom of each vane. Air travels along the sun-heated aluminum core at the rate of 1.7 meters/second and exits the top and re-enters the room at temperatures measured at 120 degrees.The University of Minnesota helped develop this innovative passive solar heater and works on all product research.An independent lab (Stork Materials Technology) assigned an R-value of 1.7 to the "blinds" - so they not only heat...but insulate as well. Bob Vila, Solar Thermal Magazine, NPR and Green Builder Magazine have all written about SolarChoice. Every one of their articles is on our web site.Are SolarChoice Heaters the solar solution for everyone? No. But if you're looking for a heating solution for your home - go solar in some way, shape or form. Bringing solar heating to any home is a tremendous idea – no matter what form it comes in or whether you bought it or made it yourself. Unfortunately, I’m not a do-it-yourselfer…and not everyone is. For them the choice is to have someone build a window heater – or look for another solution. And one is out there.

Here’s the pitch from us.

SolarChoice passive solar heaters masquerade as vertical window blinds. Operating via natural convection, cool air is drawn into the bottom of each vane. Air travels along the sun-heated aluminum core at the rate of 1.7 meters/second and exits the top and re-enters the room at temperatures measured at 120 degrees.

The University of Minnesota helped develop this innovative passive solar heater and works on all product research.

An independent lab (Stork Materials Technology) assigned an R-value of 1.7 to the “blinds” – so they not only heat…but insulate as well. Bob Vila, Solar Thermal Magazine, NPR and Green Builder Magazine have all written about SolarChoice. Every one of their articles is on our web site.

Are SolarChoice Heaters the solar solution for everyone? No. But if you’re looking for a heating solution for your home – go solar in some way, shape or form.

]]> By: Toddhttp://www.homeconstructionimprovement.com/solar-box-window-heater/#comment-160 Todd Sat, 18 Oct 2008 19:13:00 +0000 http://localhost/test/2007/12/solar-box-window-heater/#comment-160 @ Campbell - I have not built one yet. I am thinking about building one this winter as an experiment. @ Campbell – I have not built one yet. I am thinking about building one this winter as an experiment.

]]> By: A Campbellhttp://www.homeconstructionimprovement.com/solar-box-window-heater/#comment-159 A Campbell Sat, 18 Oct 2008 18:35:00 +0000 http://localhost/test/2007/12/solar-box-window-heater/#comment-159 So, have you built one of these yet?<br/>I'd love to have one or two for our cottage. What happens at night? Do you leave it in all the time? Can you leave it unattended, such as at a weekend ski house? I'm interested. So, have you built one of these yet?
I’d love to have one or two for our cottage. What happens at night? Do you leave it in all the time? Can you leave it unattended, such as at a weekend ski house? I’m interested.

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