Best Heat blocking film and best application

[Guest DPN123]

I have a glass box and I want to create a situation where the air inside the box is as warm as possible. I don't want to have to heat the inside of the box with electricity or battery powered lamp.

The box is single pane glass and will be stored inside the home.

Is there a film I can apply to the glass that will allow light/heat to enter the box and then to keep heat in it ???

If yes should the film be applied to the inside edge of the single pane glass(inside of the box) or the outside edge of the glass(outside the box) or both?

Thanks to any expert who can help.

[Tintguy1980]

Enerlogic 70 from Vista Films will allow roughly 50% to penetrate and keeps heat from excaping through its revolutionary lowE coating; however, the box needs be in sunlight's near infrared because Enerlogic is effective at rejecting long wave (or far) infrared if the source is external or internal. Far infrared is what you find radiating off furnishings after the sun or man-made heat has warmed surface materials.

I do not believe there is an answer for this.

VQ... you have something on this?

[vquestfilms.com]

I have a glass box and I want to create a situation where the air inside the box is as warm as possible. I don't want to have to heat the inside of the box with electricity or battery powered lamp.

Window films do not create heat unless the are exposed to near or far IR like Smartie indicated. So to generate heat you need either an interior source (which you indicated that you do not want) or an exterior one preferably sun so that the near IR can transmit into the box and re-radiate as heat thus warming the interior. The best film for that would be a Low E window film or glass coating. Enerlogic is probably still the lowest emmissivity window film on the market and the 70% vlt would probably allow the most near IR to transmit allowing for the innermost coating to trap the resulting radiant heat and allowing the slowest loss of energy even when the sun is not shining.

In short... go with Smartie's recommend.

[Tint Eastwood]

Indoor mater farmer huh?

[Guest DPN123]

So what you are saying is that sunlight must be involved for a low e film to trap heat inside the glass box?

[Counterpart]

The box is single pane glass and will be stored inside the home.

Is there anything inside the box that is living? If yes, all you have to do is to expose it to some light source because the greenhouse effect will keep it warmer.

[Guest DPN123]

No, there is nothing living inside the box. I just want to create a higher temp inside the box. I originally thought a light source or heating element but then I would need a power source like a battery or electrical current. I used to own a glass replacement company and thought maybe if I tint the glass with either low e film or heat resistant film heat/light would enter and be blocked from leaving causing a slightly elevated temp on the inside of the box from the outside air. In this way, I wouldn't need a heat source, battery etc--more simple and no hassles

[Counterpart]

heat/light would enter and be blocked from leaving

oh, then you need to work on the atmospheric conditions. You can leave a small holder or dish of water in the box to maximize the humidity which will better elevate the temperature/retain heat when there is a light source. The internal temperature of the box will be warmer than your house. =)

[Guest DPN123]

Thanks for the water tip--I will try that.

[Guest davidc1]

Back from the dead....but, come on, tell us what's in the box!