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Post by elliesdad on Aug 27, 2023 16:06:20 GMT
Shouldn’t any newly built buildings be constructed of “white” material? In reality I suspect it would be the normal material but manufactured in such a way that it is/appears to be white and “ticks all the boxes for reflectivity” **
Cheers,
Geoff
** I’m not 100% sure that “reflectivity” is a word but, whatever, I mean the ability to reflect 😉
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Post by elliesdad on Aug 27, 2023 16:27:24 GMT
I've got three children, now teenagers. I find that all of them think a lot about our world and they question each aspect of life of their parents. And their moral standards are really high. (I even had to reduce my meat consumption. ) They simply try to find their best way through modern life, and that's o.k. I did the same. Cheers, Brian Kudos to your children. The point I was trying to make is that - at a very simplistic level - more people = more “stuff” consumed, whether that’s food, water, housing, vehicles or whatever. We can’t “grow” any more land (well, our friends in the Netherlands have been giving it a very good go but effectively the sheer size of the earth is finite). So we must use less resources, or manage them differently. Off at a tangent, but I have given thought as to how different the world would be if “people” were 50% size. Let’s assume that’s a rather convenient 3 feet tall rather than the current 6 feet. If you are less tall then you’d need less food and water. Housing would be correspondingly smaller (only 25% the footprint of a current house). Transportation would, however, be a big “negative” as it would now take an awful lot more steps to reach a distant location. Cheers, Geoff
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Post by vodnik on Aug 27, 2023 16:27:41 GMT
...i see if you play to often version 3 youz need that in a tabletopforum...
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Post by Brian Ború on Aug 27, 2023 19:09:52 GMT
...i see if you play to often version 3 youz need that in a tabletopforum... Hey, vodnik, that's off topic. But fighting global warming needs good strategies...
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Post by Brian Ború on Aug 27, 2023 19:27:59 GMT
I've got three children, now ... I did the same. Cheers, Brian Kudos to your children. The point I was trying to make is that - at a very simplistic level - more people = more “stuff” consumed, whether that’s food, water, housing, vehicles or whatever. We can’t “grow” any more land (well, our friends in the Netherlands have been giving it a very good go but effectively the sheer size of the earth is finite). So we must use less resources, or manage them differently. Off at a tangent, but I have given thought as to how different the world would be if “people” were 50% size. Let’s assume that’s a rather convenient 3 feet tall rather than the current 6 feet. If you are less tall then you’d need less food and water. Housing would be correspondingly smaller (only 25% the footprint of a current house). Transportation would, however, be a big “negative” as it would now take an awful lot more steps to reach a distant location. Cheers, Geoff Hi, Geoff! You're certainly right. And although I don't see how man could grow smaller, your idea is convincing. The problem of overpopulation or exponential growth and consumption reduces itself when societies reach a certain level of cultural standard or progress. Look at Germany. A woman gets only 1.7 children or less, so we need a lot of immigrants only to keep the level. Look at China, they had their one child policy to avoid overpopulation. But when you're born in Africa you really need your big family (and many children) as a kind of assurance that someone will care for you in old age... But with better education and some other achievements there could be some changes...
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Post by carll on Aug 27, 2023 23:37:29 GMT
'Brian'
Nice white / snow!? rooftops in your miniature environmental DIY. And foil reflector.
My flat roof spaces get lots of visits by squirrels and birds (with hobnailed boots or so it seems from noise the pigeons create)! So squirrels scratching and pigeons pecking are a problem. The designer of my garden studio created a pebble surface over rubber over wood, the first to dull sounds and protect second to keep it waterproof. So far the squirrels have moved stones about but not munched into the rubber. The other flat roof is a shed with roofing felt over wood, not great for resisting scratching squirrels. The pebbles an the roof felt should take white paint. ... But not sure if it will last long as a reflective surface.
The main roof would be more of a problem as it probably involves planning permission to change its appearance.... CarlL
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Post by Brian Ború on Aug 28, 2023 16:20:33 GMT
I keep experimenting with cooling surfaces. That was the temperature today on my balcony in bad weather. And that on the space blanket. On a warm summerday I even measured a difference of 10° and more.
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Post by carll on Aug 29, 2023 22:24:46 GMT
This you stretching reflective material, Brian?
Went up on my biggest flat roof yesterday to consider options. As its all pebble stones, I suppose a spray would work best (not that I have one) so thinking if a simple whitewash by brush would work.
Other flat roof much smaller, so its case of deciding on how best to proceed with first.
Reflecting heat is good in summer as my large shed overheats internally (gets up to 28C quite often) but in winter I may lose heat with reflective roof and end up adding to global warming by using (electric) heater (more) to warm up internal area. It's my painting and games shed, and my conservation scientist advisor - fully qualified and my daughter - tells me I should try to keep it to constant 10C to protect contents. Which usually means heating by night in winter but not by day... but if I reflect heat back into space?? mmmm...
CarlL
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Post by Brian Ború on Aug 29, 2023 23:02:16 GMT
This you stretching reflective material, Brian? Went up on my biggest flat roof yesterday to consider options. As its all pebble stones, I suppose a spray would work best (not that I have one) so thinking if a simple whitewash by brush would work. Other flat roof much smaller, so its case of deciding on how best to proceed with first. Reflecting heat is good in summer as my large shed overheats internally (gets up to 28C quite often) but in winter I may lose heat with reflective roof and end up adding to global warming by using (electric) heater (more) to warm up internal area. It's my painting and games shed, and my conservation scientist advisor - fully qualified and my daughter - tells me I should try to keep it to constant 10C to protect contents. Which usually means heating by night in winter but not by day... but if I reflect heat back into space?? mmmm... CarlL Yes, nailed to a simple wooden frame. Decisions, decisions. I'd go for solutions that fit to the season. I can turn my space blanket frame around. In summer the silver side reflects heat back to space. In winter you could turn the foil upside down and let the golden side face the sky to keep the warmth inside and to reduce your heating costs... And since our steps are only the beginning of a long road, we may certainly experiment and stay on (our) small levels...
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Post by Brian Ború on Aug 30, 2023 11:00:24 GMT
Shouldn’t any newly built buildings be constructed of “white” material? In reality I suspect it would be the normal material but manufactured in such a way that it is/appears to be white and “ticks all the boxes for reflectivity” ** Cheers, Geoff ** I’m not 100% sure that “reflectivity” is a word but, whatever, I mean the ability to reflect 😉 Hi Geoff, your idea is fine! Let's adapt it for cars and trucks. Right now there are about 1.5 billion vehicles on all roads of the world. If every one of them had only 1m² of white paint or reflective foil on it, bam, these would cover an area of 1,500 square kilometers, that is bigger than Hongkong! Next I'll caculate the same with ships and planes... Cheers!
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Post by paddy649 on Aug 30, 2023 15:13:32 GMT
I have a solution. Here in Britain there is debate about the cost of maintaining and updating our nuclear deterant. Well, before our Trident missiles become rusty and fail to work, let’s press the button now. It’ll not only save loads of money, but it would also reduce unemployment as well. Stevie - that is a perfect solution (to a different problem!) I can now justify all my expenditure on lead soldiers and a massive unpainted lead mountain as it’ll all be piled up against our windows to protect from gamma shine if you ever get into power!
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Post by Haardrada on Aug 30, 2023 18:23:04 GMT
Am I alone in thinking this Global Warming isn't all what it is claimed to be?
History is full of evidence of localized and widespread famine,climate change resulting in massed population movements,rivers freezing,catastrophic flooding,sea levels falling/rising and chains of earth quake/volcanic activity which has led to armies and wars we choose to emulate.....so how can the "scientists" (who don't all agree with each other),know the difference between natural cycles and the extent of human influence on the planet?The rivers Themes nor Tyne have never frozen in my lifetime, neither have Niagara falls....but History records this has happened.Most if the data these guys are making predictions from is under 200 years old,when the planet has been spinning round a star for billions of years....so ladies and gentlemen excuse me when I am not convinced by the term Global warming.
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Post by stevie on Aug 30, 2023 19:25:08 GMT
Ah Haardrada, what do NASA, scientists, climatologists, meteorologists, and all the other ‘-ologists’ know. Yes, the climate of Earth has changed many times in the past 4½ billion years, and those natural processes are still occurring today…but this is the first time a technological society has added to it by doubling the CO2 in 100 years. Look at it another way: good old mother nature has spent 4½ billion years sucking the CO2 out of our atmosphere and burying underground, otherwise we would have an atmosphere like our sister planet Venus, 92 times more dense than present day Earth and composed of 93% carbon dioxide (a greenhouse gas that traps heat). Yet here we are, digging it up and pumping billions of tons of it back into the air just as fast as we can. If I met an alien and he/she/it asked me to describe human beings, I’d say we are like someone that has just jumped off the top of the Empire State building… …each floor they pass they say to themselves “I’m ok so far, nothing to worry about, I’m ok so far…”
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Post by paddy649 on Aug 30, 2023 22:10:20 GMT
“Anyone who believes in indefinite growth on a physically finite planet is either mad, or an economist.” David Attenborough
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Post by Brian Ború on Aug 30, 2023 22:31:25 GMT
Meanwhile I made some calculations... In order to prevent further heating of the oceans we need to cover an area of about 1.200.000 km² or 1.500.000 km². That is roughly the equivalent of Sudan or Mongolia. The car roofs (see above) are only 1/1000 of this. Not so easy.
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