REALLY COOL: Forget air conditioning! Scientists develop a transparent window coating that can cool buildings without using ANY energy

It really surprised me to see that aluminum foil on the windows of a trailer cut it's heating costs drastically.
I lived in a trailer many years ago and lived in a place where below zero temperatures were normal. It works

It seems counterintuitive until you realize it is reflecting heat both ways

Yeah its been around for many years now. UV Window film. 3M started making it in the late 60's

Last Edited by FLY BOY™ on 11/02/2022 02:25 PM

is this why windows in spain have shutters on them?

Someone tell op 1990 is asking for their newspaper back….

Yes Really this isn’t new low emmisivity glass it does the same on the inside to keep heat is it’s actually in building regs as a requirement for new install windows,

LOW-E GLASS: HOW DOES IT WORK?

It is thought that between 10-50% of a given home’s energy loss occurs through its windows and doors, and that 90% of the energy lost through windows is lost through the glass itself. This is an undeniably hefty chunk of energy to be losing through such a small area of your house’s architecture. In 1975, the first low-emissivity glazing solution was brought to market in a bid to change this.

The emissivity of a surface refers to the amount of energy it emits at specific wavelengths, with thermal energy usually being the focus. A material is given a numerical thermal emissivity value of between 0 and 1, with a perfect reflector having an emissivity of 0 and the perfect absorber having an emissivity of 1.

Metals, such as Silver and Aluminium, have thermal emissivities of <0.05, while standard clear glass comes in at around 0.9, making it one of the higher emissivity materials out there. Breaking this down, standard glass with its thermal emissivity of 0.9, allows 90% of thermal energy to pass through it, reflecting the remaining 10%. Clearly then, window glass needs some help in reflecting heat back into the home.

This is where low E glass comes in. Low E glass is essentially standard clear glass with a microscopic, transparent coating on its surface that is better at reflecting heat than the glass itself, creating a composition that has a lower emissivity than standard glass. Glass with a low E coating therefore keeps your home warmer by reflecting a higher proportion of the heat back into your home, and can keep you cooler by reflecting solar thermal energy from outside.

This coating can either be “soft-coat” – applied to glass off-line in a vacuum chamber at room temperature and sealed within an IGU, or “hard-coat” – which is fused to the surface of the glass while it’s being produced. For the purposes of this piece, we’ll be focusing on soft-coat, as it is of lower-emissivity, and more commonly used in the UK market.

The coating used in soft-coat low E glass units tend to be that of a low-emissivity metal, such as silver.

So then it cost more to heat your house in the winter then.

bump, it seems

lol at op

dailymail says the link, fucking shill/dummy

aint gonna read your dumbass websites we know u lying dirty cunt

Think of the humidity and musty smell downstairs. Ugh....

Pay attention, this technology has been around for years. Nothing new.

The reason I am telling you to pay attention is this coating is a sol-gel.

Guess what the graphene oxide in the vaccine is? It is a fucking sol-gel.

Not much different than the coating on a glass top stove, the coating on the glass is a sol-gel product.

This technology is a step up to us space colonization flying near the sun. Venus. Good step up.

Just shit to write about, when will it be sold and way how much will they overprice it?