Switchglass Double Glazed Comparison

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Today we'll be taking a look at double glazed units and how different double glazed units perform in terms of their efficiency and their ability to block out heat when the sun hits them.

The first one essentially is normal clear glass, which has basically been put into a double glazed unit and we'll be able to test the performance.

The second IGU or double glazed unit that we'll be testing is a hard coat. Now, in Australia the hard coat is acknowledged as one of the highest performing double glazed units for Low-E, however there is another product which is called a triple silver coat and the triple silver coat has a far greater performance than the hard coat and we'll demonstrate that later on in the test to give you an idea of just how much of a difference there is between the hard coat and the triple silver.

And the last panel we have essentially is a switchable glass unit combined with a triple silver and so what you have on the back, you have a switchable glass, and what you have on the front essentially is a triple silvered piece of toughened glass and these have all been produced together and they're used whenever switchable glass is in an external application.

OK - so let's start the test.
The next double glazed unit we're going to test is a hard coat. So, I'll place it back in exactly the same spot. We've got a heat lamp providing heat for us and then again I'm going to apply a heat sheet to the opposite side of the hard coat IGU unit and we'll see how it performs. So this one is taking a little bit longer to change colour, but it is changing colour and we can slowly see how the entire heat sheet is starting to become clear - which is just showing that the heat is essentially coming through the hard coat double glazed unit. And the same as what we've done before I'll use the thermo gun to see how much temperature is coming through the double glazed unit. So this is performing better than the clear but only marginally. So the clear was around 40 degrees and this is approximately 35 degrees showing an improvement of about 5 degrees in and around the same amount of time.

And the final demonstration is of the triple silver double glazed, and this essentially is what we use for all switchable IGUs - the triple silver. And so again I'm going to place the heat sheet on the opposite side and see if it changes colour. So at this point we have no colour change at all - so, essentially no sign that the sun's heat is getting through the triple silvered double glazed unit. Just to remind you, we use triple silver on all external switchable glass IGU units. I will test to see whether the heat is coming through - bearing in mind that clear was 40 degrees, the hard coat IGU was 35 and the triple silver is 23. So quite a significant performance difference from the clear double glazed, to the hard coat double glazed to the triple silver.

Now remember, all our switchable double glazed units are fitted with a triple silvered soft coat IGU unit, which is the highest performing of any double glazed unit we've showed you today.

We've got the double glazed switchable glass with the triple silvered soft coat. I've got a couple of my heat sheets and what I'm going to do is place them on the opposite side, which is symbolic of the inside of a home, and we'll see if we have any colour change. So, we've got the 2 sheets there and we'll leave those there for a few minutes. I'll come back to you just so we can see. We'll leave that there for a couple of minutes and I'll also use the infra red gun to see how much heat comes through on to the other side of the glass.

(5 minutes later - no change at all. Almost 50% better than clear IGU and 33% hard coat low-e.)

We tested the clear double glazed units. We also tested the hard coat double glazed and the triple silver soft coat double glazed which is combined to all Switchglass double glazed units and it's really designed to handle all the harsh conditions of an Australian summer, but of course can be used universally around the world.

Видео Switchglass Double Glazed Comparison канала Switchglass