Okay, Now It's Officially Summer
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Yup. At 17:00 MST, it's 50°C on the porch, in the shade. Time for a beer... :sigh:
Will Rogers never met me.
Yes indeed! I was well over 90 here in NC yesterday. I was planning to go to the lake today, but it clouded up last night and is threatening sever thunder and lightening storms. Gonna just stay in and work on my CV. ;) Though I might go play pool later.
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I have an idea for a solar powered air conditioner that's entirely feasible. The problem is as always the initial cost. Where is the pain threshold for how much people would pay for one?
Be excellent to each other. And... PARTY ON, DUDES! Abraham Lincoln
I'm not sure where the threshold lies, Jorgen. A new unit costs about $3500 - $5000, installed. But the operating cost - given our 6 month summers - can easily run $900 - $2400 a year. If you can guarantee a 10 year lifetime, I think you could sell it for between $8000 and $12000, depending on the size. Since most people can't simply write a check for that amount, you'd do best to offer a financing program that requires little down and long terms, but there's interest to be earned on that, as well. I'll be looking forward to being a beta tester! :-D
Will Rogers never met me.
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He must be in Death Valley
When the going gets weird the weird turn pro - Hunter S Thompson RIP
Actually, I'm not. But it's not more than 100 miles away, I think, just over the Dead Mountains to the West, then North a bit. Same desert, though, the Mojave.
Will Rogers never met me.
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Actually, I'm not. But it's not more than 100 miles away, I think, just over the Dead Mountains to the West, then North a bit. Same desert, though, the Mojave.
Will Rogers never met me.
Roger Wright wrote:
Actually, I'm not. But it's not more than 100 miles away, I think, just over the Dead Mountains to the West, then North a bit. Same desert, though, the Mojave.
I watched The Last Stand with Arnold Schwarzenegger a couple of weeks ago. Your town gets a mention and the local police get absolutely wiped out.
Michael Martin Australia "I controlled my laughter and simple said "No,I am very busy,so I can't write any code for you". The moment they heard this all the smiling face turned into a sad looking face and one of them farted. So I had to leave the place as soon as possible." - Mr.Prakash One Fine Saturday. 24/04/2004
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Yup. At 17:00 MST, it's 50°C on the porch, in the shade. Time for a beer... :sigh:
Will Rogers never met me.
Wove. Sounds great. Here it's Sunday (Saint Peter and Paul) and tomorrow... It's Sunday again. And Brazil against Spain, but at midnight our time.. Still 20°C with wind, and in northern part of country (Switzerland), snow at 1800 meters... ;)
The signature is in building process.. Please wait...
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I'm not sure where the threshold lies, Jorgen. A new unit costs about $3500 - $5000, installed. But the operating cost - given our 6 month summers - can easily run $900 - $2400 a year. If you can guarantee a 10 year lifetime, I think you could sell it for between $8000 and $12000, depending on the size. Since most people can't simply write a check for that amount, you'd do best to offer a financing program that requires little down and long terms, but there's interest to be earned on that, as well. I'll be looking forward to being a beta tester! :-D
Will Rogers never met me.
Roger Wright wrote:
I think you could sell it for between $8000 and $12000
That was actually a bit more than I expected.
Roger Wright wrote:
If you can guarantee a 10 year lifetime
How much of a problem is sandblasting where you live? How does a window pane look like after ten years in the wind?
Roger Wright wrote:
I'll be looking forward to being a beta tester!
You're geographically spot on as the aiming group, technical understanding is of course also a plus. Solar cooling has a few problems involved, such as storing the cold for the night, so I don't know if it's ever going to be useful in the tropics where the sun sometimes doesn't shine for very long times despite the heat. But the biggest problem will probably be to get it safe enough as it involves liquid ammonia.
Be excellent to each other. And... PARTY ON, DUDES! Abraham Lincoln
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Yup. At 17:00 MST, it's 50°C on the porch, in the shade. Time for a beer... :sigh:
Will Rogers never met me.
Well it is almost July :cool:. So you had a cool spring. We only hit 42C and it is cooling off Monday (well they tell me it is.)
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Yup. At 17:00 MST, it's 50°C on the porch, in the shade. Time for a beer... :sigh:
Will Rogers never met me.
It was also terribly hot in Toronto today. Got all the way up to 75°F! :-D /ravi
My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com
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It was also terribly hot in Toronto today. Got all the way up to 75°F! :-D /ravi
My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com
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Quote:
75°F
I want to move to Toronto! Anyone got a decent job going spare up there?
- I would love to change the world, but they won’t give me the source code.
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Roger Wright wrote:
I think you could sell it for between $8000 and $12000
That was actually a bit more than I expected.
Roger Wright wrote:
If you can guarantee a 10 year lifetime
How much of a problem is sandblasting where you live? How does a window pane look like after ten years in the wind?
Roger Wright wrote:
I'll be looking forward to being a beta tester!
You're geographically spot on as the aiming group, technical understanding is of course also a plus. Solar cooling has a few problems involved, such as storing the cold for the night, so I don't know if it's ever going to be useful in the tropics where the sun sometimes doesn't shine for very long times despite the heat. But the biggest problem will probably be to get it safe enough as it involves liquid ammonia.
Be excellent to each other. And... PARTY ON, DUDES! Abraham Lincoln
It's come full circle, eh? The first "air conditioning" units used liquid ammonia as a working fluid, because of its excellent thermal properties. Freon was later substituted because it's "safer," being chemically inert for all practical purposes. Of course, no one considered looking for holes in the ozone layer above us at the time, nor did anyone know what the free chlorine radicals released by UV exposure from freon molecules would do to ozone. We live and learn... :-D Sandblasting isn't a major problem here, though it does occur in some parts of the state. There are some parts along I-10 in the south part where sandstorms are almost constant, and I've seen a number of cars down that way with license plates which have no paint left on them. I have stopped any to ask, but I presume that wind-borne sand is the cause. It doesn't happen here, though. The Colorado River valley is rich in agriculture, so we don't have the miles and miles of open sand they have down south, and even there this is a limited area. Two factors make this a challenging environment - extreme temperature swings, and powerful, gusty winds. Both can be designed around, but I find few designers willing to believe how extreme it really is! Published climate information is mostly a pack of lies, since the official information is collected far from where people actually live, and I suspect the casinos are in collusion with weather agencies to keep the tourists coming.:suss: On the pricing, my guess might be high, but that's only because I can do the math and know that would be fair. That is not the case for most people in this region - math skills are mostly non-existent. And few people in Arizona make what could be called a fair wage. That might make it difficult to sell at a "fair" price here, but on the other hand, it's a great argument for doing the fabrication and assembly here. ;) Keep me posted on your progress with this project - it sounds quite intriguing!
Will Rogers never met me.
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Roger Wright wrote:
Actually, I'm not. But it's not more than 100 miles away, I think, just over the Dead Mountains to the West, then North a bit. Same desert, though, the Mojave.
I watched The Last Stand with Arnold Schwarzenegger a couple of weeks ago. Your town gets a mention and the local police get absolutely wiped out.
Michael Martin Australia "I controlled my laughter and simple said "No,I am very busy,so I can't write any code for you". The moment they heard this all the smiling face turned into a sad looking face and one of them farted. So I had to leave the place as soon as possible." - Mr.Prakash One Fine Saturday. 24/04/2004
Not surprising! Bullhead's Finest are just one IQ point ahead of the Keystone Kops, but far better armed.
Will Rogers never met me.
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It's come full circle, eh? The first "air conditioning" units used liquid ammonia as a working fluid, because of its excellent thermal properties. Freon was later substituted because it's "safer," being chemically inert for all practical purposes. Of course, no one considered looking for holes in the ozone layer above us at the time, nor did anyone know what the free chlorine radicals released by UV exposure from freon molecules would do to ozone. We live and learn... :-D Sandblasting isn't a major problem here, though it does occur in some parts of the state. There are some parts along I-10 in the south part where sandstorms are almost constant, and I've seen a number of cars down that way with license plates which have no paint left on them. I have stopped any to ask, but I presume that wind-borne sand is the cause. It doesn't happen here, though. The Colorado River valley is rich in agriculture, so we don't have the miles and miles of open sand they have down south, and even there this is a limited area. Two factors make this a challenging environment - extreme temperature swings, and powerful, gusty winds. Both can be designed around, but I find few designers willing to believe how extreme it really is! Published climate information is mostly a pack of lies, since the official information is collected far from where people actually live, and I suspect the casinos are in collusion with weather agencies to keep the tourists coming.:suss: On the pricing, my guess might be high, but that's only because I can do the math and know that would be fair. That is not the case for most people in this region - math skills are mostly non-existent. And few people in Arizona make what could be called a fair wage. That might make it difficult to sell at a "fair" price here, but on the other hand, it's a great argument for doing the fabrication and assembly here. ;) Keep me posted on your progress with this project - it sounds quite intriguing!
Will Rogers never met me.
Roger Wright wrote:
It's come full circle, eh?
They're still using ammonia in larger facilities such as ice skating rinks, and also in mobile homes running on propane using the von Platen & Munters cycle. None of which are useful for domestic use. I don't know if they use ammonia in large facilities because it's more efficient or if it's just cheaper.
Roger Wright wrote:
Sandblasting isn't a major problem here,
Good to hear, high quality, high temperature solar collectors tend to be expensive. I'd like them to last for a while.
Roger Wright wrote:
Two factors make this a challenging environment - extreme temperature swings, and powerful, gusty winds
The internal temperature differences would be a lot more extreme, so there I don't see a problem. And keeping the stuff on the roof from blowing away should already be solved. I don't intend to reinvent the wheel in that aspect. The rest of the installation would be indoors and in a box outside the house. Anyway, some reasoning. The compressor cycle can't be used domestically because it would run of photovoltaic cells, which is having an efficiency of 15% which makes the costs of covering half the roof way to high. Even if the efficiency of the compressor cycle is up to 500% (but realistically quite a bit less) you'll end up with a very high cost in photovoltaic panels. The von Platen & Munters cycle runs off heat and has no moving parts, so it's totally brilliant, if it wasn't for the fact that the efficiency is barely 20% at the best. And high temperature solar collectors are also prohibitively high. And getting rid of the surplus heat is also turning into a problem. I have a feeling that people in common don't want to have a cooling tower in their garden. There are also absorbtion coolers using LithiumBromide-Water solutions, but while having up to 100% efficiency the cost and/or reliability is a problem due to corrosion which is making both the initial and running costs a bit high. So now my first step is to read up on the physics to see if my idea really is as good as I think. second step is to make a small test plant to see if it works out practically, and third is to patent it. step 0 was to search the internet to see if anyone already has had the idea. Still haven't found it.
Be excellent to each other. And... PARTY ON, DUDES! Abraham L
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Roger Wright wrote:
It's come full circle, eh?
They're still using ammonia in larger facilities such as ice skating rinks, and also in mobile homes running on propane using the von Platen & Munters cycle. None of which are useful for domestic use. I don't know if they use ammonia in large facilities because it's more efficient or if it's just cheaper.
Roger Wright wrote:
Sandblasting isn't a major problem here,
Good to hear, high quality, high temperature solar collectors tend to be expensive. I'd like them to last for a while.
Roger Wright wrote:
Two factors make this a challenging environment - extreme temperature swings, and powerful, gusty winds
The internal temperature differences would be a lot more extreme, so there I don't see a problem. And keeping the stuff on the roof from blowing away should already be solved. I don't intend to reinvent the wheel in that aspect. The rest of the installation would be indoors and in a box outside the house. Anyway, some reasoning. The compressor cycle can't be used domestically because it would run of photovoltaic cells, which is having an efficiency of 15% which makes the costs of covering half the roof way to high. Even if the efficiency of the compressor cycle is up to 500% (but realistically quite a bit less) you'll end up with a very high cost in photovoltaic panels. The von Platen & Munters cycle runs off heat and has no moving parts, so it's totally brilliant, if it wasn't for the fact that the efficiency is barely 20% at the best. And high temperature solar collectors are also prohibitively high. And getting rid of the surplus heat is also turning into a problem. I have a feeling that people in common don't want to have a cooling tower in their garden. There are also absorbtion coolers using LithiumBromide-Water solutions, but while having up to 100% efficiency the cost and/or reliability is a problem due to corrosion which is making both the initial and running costs a bit high. So now my first step is to read up on the physics to see if my idea really is as good as I think. second step is to make a small test plant to see if it works out practically, and third is to patent it. step 0 was to search the internet to see if anyone already has had the idea. Still haven't found it.
Be excellent to each other. And... PARTY ON, DUDES! Abraham L
A thought you might consider - use the soil to remove excess heat. At 6' depth, soil temperature changes very little in our climate. I don't remember enough thermodynamics to do the calcs, but I have heard of one clever resident here who dug a trench on his lot, installed 6" plastic pipe at depth, then buried it and built a house. The two ends of the pipe come up through the floor, and one has a simple household fan in front of it. According to those who have visited him, his only cost is running a fan, and the inside temperature never varies from about 70°F all year round. Perhaps you can use this as a sink for excess heat in your cooling cycle, and assuming the subsurface soil gains some heat over the summer, use that heat somehow in winter to recapture it for use.
Will Rogers never met me.
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A thought you might consider - use the soil to remove excess heat. At 6' depth, soil temperature changes very little in our climate. I don't remember enough thermodynamics to do the calcs, but I have heard of one clever resident here who dug a trench on his lot, installed 6" plastic pipe at depth, then buried it and built a house. The two ends of the pipe come up through the floor, and one has a simple household fan in front of it. According to those who have visited him, his only cost is running a fan, and the inside temperature never varies from about 70°F all year round. Perhaps you can use this as a sink for excess heat in your cooling cycle, and assuming the subsurface soil gains some heat over the summer, use that heat somehow in winter to recapture it for use.
Will Rogers never met me.
It's not a new idea, even if it's a pretty good idea, but the cost of doing it is a bit high. (less so if it's done with the house) You need to get down pretty far, and digging up your garden isn't a good sales argument
Be excellent to each other. And... PARTY ON, DUDES! Abraham Lincoln
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It's not a new idea, even if it's a pretty good idea, but the cost of doing it is a bit high. (less so if it's done with the house) You need to get down pretty far, and digging up your garden isn't a good sales argument
Be excellent to each other. And... PARTY ON, DUDES! Abraham Lincoln
Perhaps we could train ferrets to tunnel and drag a pipe behind them...
Will Rogers never met me.
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Perhaps we could train ferrets to tunnel and drag a pipe behind them...
Will Rogers never met me.
Maybe hamsters instead of ferrets. We'll have to ask Maunder if we can borrow a couple from him.
Be excellent to each other. And... PARTY ON, DUDES! Abraham Lincoln
