reflectix and IR / fl-IR

[dank.frank]

For what it is worth in this regard...I had never heard the claim that Reflectix was an IR blocking product. Only that it was a great reflective material that did not radiate additional heat back into the room, ie like mylar...

So I think perhaps there has been a base confusion of terminology perhaps and why it is people have chosen to use Reflectix...

That aside...I do know there are products like IR Shield and PolyShield that claim to be designed to block IR/FLIR from detecting a heat signal...

These products are similar to a 4-6mil roll of poly - but are "infused" with a metal flake of some sort that gives them their specific properties...

In the realm of doing things securely...and WHY NOT, can't hurt if it DOES work...

Figure you build a room / fully sealed "box" :

2 x 4 wall - from the outside in - 3/4in" plywood, PolyShield, R13 fiberglass, plywood or drywall, Reflectix.

If you layer in this manner when you build - ie use the IR/FLIR poly as you would a vapor/moisture barrier.

Just my two cents...



dank.Frank

 

[RB56]

This is interesting:

The first thing that's interesting is the difference between the same visible light in the two images. The next is that the demonstration isn't shot through a wall AND the barrier material. Third, any cold sheet of anything would do exactly the same thing as the "after" image.

I can't say that stuff like this would do nothing. I can say that this "test" is about as bogus as it gets - intentionally so or not.

 

[qupee]

I have a flir scope and reflective films are useless. Not even the least bit helpful. I've experimented with it.

Your heat ventilation and the temperature of the walls, if much different than adjacent rooms are what will get you.

Thank you. So much money gets wasted on reflectix because of the "conventional wisdom" circulating around boards like this.

I also agree with RB56, if one can't tell that image is as BS as it gets, they should educate themselves more.

 

[Greenheart]

"The infra-red heat rays are invisible. They are largely absorbed by glass, mirrors, plaster, wood, brick, etc., but aluminum surfaces TURN BACK, reflect , most of these heat rays."

Page 15 http://www.reflectixinc.com/images/uploads/allpdfs/t3%20heat%20flow%20by%20radiation.pdf

Proper installation has alot to due with the effectiveness of a radiant barrier insulation as well. Myself I went with it because it is so easy to work with, is highly reflective with a diffuse pattern, durable, easy to clean, and well it's just super cool to look at when your standing in your "space ship" or whatever.

 

[vertigo0007]

In the dead of winter that dryer vent is going to have a steam cloud around it all day. Doesn't have to be a cop to notice it, I'm sure there are some nosy neighbors out there would pick up on it.

But hey "if someone is watching you that closely you're already fucked" lol....

If you've ever watched a FLIR video thats what they look for in particular, dryer vents that run non stop, or hot air exiting a house in weird locations. You can't hide heat from FLIR, if you knew how FLIR worked your would know what Im saying. FLIR doesn't detect heat per se, it detects temperature difference. If everything in an area is 30 degrees ambient, and one spot is 50 degree's that will GLOW under FLIR.

Again, no contibution to the thread. Yeah, FLIR videos say thatyour dryer vent is what will get you everytime... dont they sell iceboxes in paranoia land? Is that a quote from the voices in your head? If not, you just lied, liar.

 

[ak-51]

You could rig your sewer line to be an exhaust port. Much of the heat would be absorbed by the ground as it travels underground, and then the rest would exit from a manhole or sewer drain.

This has many major downsides. You don't know if all that air pressure is messing up somebody else's sewage, and obviously as long as your blowing air through your sewer line you effectively don't have one.

If you had a well that could supply enough water you could just do drain to waste water cooling.

 

[RM - aquagrower]

You could rig your sewer line to be an exhaust port.

I know that there used to be a "Grow FAQ" on this, but it really ain't a very good idea. The main sewer line has a "house trap" on it, just like a "pea trap" under a bathroom sink. The reason for the trap is to keep sewer gasses in the sewer.

Because of this trap, any exhaust sent thru there will be vented up thru a soil vent (thru the roof). Kinda defeats the purpose.

As for running a Ice Box off of a well, I guess it would work, but wouldn't this cause the well pump to run non-stop? I don't know the exact wattage of my well pump, but do know that it is on a dedicated 220v line. Gotta be a power hog.

Personally, I like to vent into the cold air return of my HVAC system. This keeps the heat "in house". Nice in the winter months. Spring/Fall, Open the windows. Summer, let the cenntral AC handle it.

 

[gardenfather]

This is interesting:
View Image
The first thing that's interesting is the difference between the same visible light in the two images. The next is that the demonstration isn't shot through a wall AND the barrier material. Third, any cold sheet of anything would do exactly the same thing as the "after" image.

I can't say that stuff like this would do nothing. I can say that this "test" is about as bogus as it gets - intentionally so or not.

So has anyone Tried this material? is it Bs or does it work?

 

[lockwood]

I don't grow or smoke but with two small kids in the house my washer and dryer run almost 24/7

 

[lockwood]

I know that there used to be a "Grow FAQ" on this, but it really ain't a very good idea. The main sewer line has a "house trap" on it, just like a "pea trap" under a bathroom sink. The reason for the trap is to keep sewer gasses in the sewer.

Because of this trap, any exhaust sent thru there will be vented up thru a soil vent (thru the roof). Kinda defeats the purpose.

As for running a Ice Box off of a well, I guess it would work, but wouldn't this cause the well pump to run non-stop? I don't know the exact wattage of my well pump, but do know that it is on a dedicated 220v line. Gotta be a power hog.

Personally, I like to vent into the cold air return of my HVAC system. This keeps the heat "in house". Nice in the winter months. Spring/Fall, Open the windows. Summer, let the cenntral AC handle it.

FYI it's a P trap not a pea trap, because it's shaped like the letter P but rotated to provide a water diode environment to prevent the back feed of sewer gas. Also, it's not the volts it's the amps when it comes to power consumption.

 

[gardenfather]

Found this little article. Here is the quote

"The ideal place to shield your heat signature would be in a glass greenhouse. Surrounded by glass that is designed to reflect heat on all sides, you would be invisible to IR cameras (and Predator). Visible light comes in but IR can’t get out."

Should Have bought a greenhouse instead of my tent lol

 

[supermanlives]

tek foil from farmtek rules. you can get it in 6 ft rolls and really thick too. go farmtek