|
|
Post by johnofgwent on Feb 28, 2023 16:07:44 GMT
Nos sure about glass houses but in winter at 51 deg N on a clear day you get about 240-400 watts per square metre from the sun and a special pilkington glass reduces the ability of the light to escape without leaving infrared heating it was only 10 to 20 watts per sq metre but it was free, those were figures from 79 when I was paid to measure such shit
More to the point our 3 bed terraced home in newport with large south facing windows and small north facing ones and six inch thick timber framed fibreglass walls cost about as much to heat for one YEAR as my brothers place cost for a quarter.
I think large windows to capture sunlight, along with effective draught proofing is a bloody good idea
|
|
|
|
Post by Baron von Lotsov on Feb 28, 2023 16:17:49 GMT
It occurs to me that a glass house wouldn't perform well in an earthquake, and unless the glass is very thick, which would be prohibitively expensive, even tremors could crack or shatter it. I wonder about the magnifying glass effect. If the roof gets too hot, couldn't it set the curtains on fire? Perhaps some well-placed skylights would be enough? If the glass is uniform thickness then there is no lens in it to magnify the intensity, so no problem there. As for cost, the ingredients of glass are dirt cheap. The cost is in the energy needed and the manufacturing process. This is why I wonder if it can be created on site as one large piece by extrusion. This way you kind of take the factory to the site rather than the products of the factory. The majority of the cost of these materials is in the journey they take from factory to warehouse to builders to site, and all the time it is awkward stuff to transport.
I've see a 3D printed house where the huge 3D printer is taken to the site and indeed this is another way of creating a cheap house, but you would end up with concrete and I figure glass might be a much better material to live in on account that it lets so much light in.The thing is that if you go for triple or quadruple glazing the insulation is very good indeed. Normally many sheets of glass are expensive, but with extrusion you exude as many as you want in one go.
|
|
|
|
Post by besoeker3 on Feb 28, 2023 17:40:18 GMT
It occurs to me that a glass house wouldn't perform well in an earthquake, and unless the glass is very thick, which would be prohibitively expensive, even tremors could crack or shatter it. I wonder about the magnifying glass effect. If the roof gets too hot, couldn't it set the curtains on fire? Perhaps some well-placed skylights would be enough? This is why I wonder if it can be created on site as one large piece by extrusion. This way you kind of take the factory to the site rather than the products of the factory. The majority of the cost of these materials is in the journey they take from factory to warehouse to builders to site, and all the time it is awkward stuff to transport.
That's actually what they do with glass extrusion. It's a continuous process and it does not tolerate interruption. |
|
|
|
Post by Baron von Lotsov on Feb 28, 2023 18:33:41 GMT
This is why I wonder if it can be created on site as one large piece by extrusion. This way you kind of take the factory to the site rather than the products of the factory. The majority of the cost of these materials is in the journey they take from factory to warehouse to builders to site, and all the time it is awkward stuff to transport.
That's actually what they do with glass extrusion. It's a continuous process and it does not tolerate interruption. Yes indeed, I had it in mind it would have to be done with all the right parameters to work in a steady state kind of way. Sure it is not the easiest of things to engineer, but that's the challenge. If it were one continuous piece it would be a strong structure. |
|
|
|
Post by besoeker3 on Feb 28, 2023 19:55:09 GMT
That's actually what they do with glass extrusion. It's a continuous process and it does not tolerate interruption. Yes indeed, I had it in mind it would have to be done with all the right parameters to work in a steady state kind of way. Sure it is not the easiest of things to engineer, but that's the challenge. If it were one continuous piece it would be a strong structure. It is continuous as it comes out of the furnace. The electrical system ensures it is so. If that fails there is a back up very large large battery uninterruptible system. I have been told that failed once. Then the furnace was solid glass and it took weeks to clear it. |
|
|
|
Post by Baron von Lotsov on Feb 28, 2023 20:24:58 GMT
Yes indeed, I had it in mind it would have to be done with all the right parameters to work in a steady state kind of way. Sure it is not the easiest of things to engineer, but that's the challenge. If it were one continuous piece it would be a strong structure. It is continuous as it comes out of the furnace. The electrical system ensures it is so. If that fails there is a back up very large large battery uninterruptible system. I have been told that failed once. Then the furnace was solid glass and it took weeks to clear it. What kind of glass was this furnace producing, as in what was the product? |
|
|
|
Post by besoeker3 on Mar 1, 2023 10:37:16 GMT
It is continuous as it comes out of the furnace. The electrical system ensures it is so. If that fails there is a back up very large large battery uninterruptible system. I have been told that failed once. Then the furnace was solid glass and it took weeks to clear it. What kind of glass was this furnace producing, as in what was the product? Clear glass like in window panes. |
|
|
|
Post by besoeker3 on Mar 1, 2023 10:39:03 GMT
It is continuous as it comes out of the furnace. The electrical system ensures it is so. If that fails there is a back up very large large battery uninterruptible system. I have been told that failed once. Then the furnace was solid glass and it took weeks to clear it. What kind of glass was this furnace producing, as in what was the product? Toughened clear glass. |
|
|
|
Post by Baron von Lotsov on Mar 1, 2023 13:07:08 GMT
What kind of glass was this furnace producing, as in what was the product? Toughened clear glass. Ah i see. I must admit i know very little about the art of glass production, but looking at how Pilkington do it, they lay it out flat on a tray of molten tin i think they were saying, and they also said this method they invented is adopted by the industry now. Perhaps toughened glass needs a different process. |
|
|
|
Post by Toreador on Mar 1, 2023 13:31:10 GMT
Ah i see. I must admit i know very little about the art of glass production, but looking at how Pilkington do it, they lay it out flat on a tray of molten tin i think they were saying, and they also said this method they invented is adopted by the industry now. Perhaps toughened glass needs a different process. Toughened glass is made by a repeated heating and cooling process. |
|
|
|
Post by besoeker3 on Mar 1, 2023 13:42:27 GMT
Ah i see. I must admit i know very little about the art of glass production, but looking at how Pilkington do it, they lay it out flat on a tray of molten tin i think they were saying, and they also said this method they invented is adopted by the industry now. Perhaps toughened glass needs a different process. I have been to Pilkington glass works quite a few times. They don't lay the glass flat tray - it is a continuous flow. Variable speed drives control the flow. In the event that the drives fail there is a huge battery back up. |
|
|
|
Post by Toreador on Mar 1, 2023 14:02:34 GMT
Ah i see. I must admit i know very little about the art of glass production, but looking at how Pilkington do it, they lay it out flat on a tray of molten tin i think they were saying, and they also said this method they invented is adopted by the industry now. Perhaps toughened glass needs a different process. I've explained, above, how glass is normally toughened. Pilkingtons did indeed invent what is known as float glass, though originally they used molten lead. |
|
|
|
Post by Dan Dare on Mar 1, 2023 14:03:45 GMT
Again in France, insurance companies will be awkward about properties that do not have shutters - preferably electric roller shutters - and/or burglar proof glass to EN 356.
|
|
|
|
Post by besoeker3 on Mar 1, 2023 14:10:37 GMT
Ah i see. I must admit i know very little about the art of glass production, but looking at how Pilkington do it, they lay it out flat on a tray of molten tin i think they were saying, and they also said this method they invented is adopted by the industry now. Perhaps toughened glass needs a different process. Toughened glass is made by a repeated heating and cooling process. Thank you - much appreciated. |
|
|
|
Post by Baron von Lotsov on Mar 1, 2023 17:13:38 GMT
Ah i see. I must admit i know very little about the art of glass production, but looking at how Pilkington do it, they lay it out flat on a tray of molten tin i think they were saying, and they also said this method they invented is adopted by the industry now. Perhaps toughened glass needs a different process. I have been to Pilkington glass works quite a few times. They don't lay the glass flat tray - it is a continuous flow. Variable speed drives control the flow. In the event that the drives fail there is a huge battery back up. Well that's what they said in some PR video. They said they patented the process and it was subsequently the industry standard method. The reasoning is the surface is perfectly flat due to gravity. It may well have been a continuous process where I guess it has cooled sufficiently it is then chopped into pieces. I only caught a glimpse of the factory and this factory was probably in the US. |
|
