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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Solar Power
I forgot to mention in 6 days of operation, our new solar panel system
claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. |
#2
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Solar Power
"Stu Fields" wrote in message .. . I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. |
#3
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Solar Power
"Stu Fields" wrote in message .. . "Stu Fields" wrote in message .. . I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. How much CO2 was released making, shipping and installing the panels? How much of a waste disposal problem in 20 or so years? |
#4
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Solar Power
"Buerste" on Sat, 17 Jul 2010 14:44:53 -0400
typed in rec.crafts.metalworking the following: "Stu Fields" wrote in message . .. "Stu Fields" wrote in message .. . I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. How much CO2 was released making, shipping and installing the panels? How much of a waste disposal problem in 20 or so years? Details, details - if it doesn't matter to Al Gore, then it doesn't matter. The important thing is that now Stu can feel superior to the rest of us, for his lower Carbon Footprint. Oh, and if anyone needs carbon credits, I'm willing to sell the offsets from not using my Learjet to fly to the coast. But hurry, I'm thinking about upgrading, to not flying my private 737, in the near future. tschus pyotr -- pyotr filipivich. "I wish you wouldn't use the mind control device - I get these terrible migranes until it's finished." Jonathon |
#5
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Solar Power
"Buerste" wrote in message ... "Stu Fields" wrote in message .. . "Stu Fields" wrote in message .. . I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. How much CO2 was released making, shipping and installing the panels? How much of a waste disposal problem in 20 or so years? You know we don't do long term planning. If it gives a good appearance that is the main thing that is required. Unintended consequences happen on another guy's watch. Haven't you been paying attention? |
#6
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Solar Power
"Stu Fields" wrote in message "Stu Fields" wrote in message I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. 500 pounds of CO2 in six days? That's an incredible amount! I'm a bit suspicious of that number. How can it be so high? Anyone care to explain? I don't believe it........ phil |
#7
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Solar Power
On Jul 17, 6:33*pm, "Phil Kangas" wrote:
"Stu Fields" wrote in message "Stu Fields" wrote in message I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: *Are you ready? * * * * * * * * * * * *300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. 500 pounds of CO2 in six days? That's an incredible amount! I'm a bit suspicious of that number. How can it be so high? Anyone care to explain? I don't believe it........ phil Phil Let me take a stab at that one, I will make educated guesses as needed. 500 pounds C02 equates to 136 pounds of carbon and 364pound of Oxygen I believe that they are assuming the solar power is replacing electricity derived from coal, oil, or natural gas. I'll use coal (because it seems easier right now) but I don't believe it will make a big difference. Assume that coal is mostly composed of long hydrocarbon chains the carbon to hydrogen ratio is roughly 1/2 on an atom basis, but 12/2 on a weight basis, so the 136 pounds of carbon came from 159 pounds of coal. A quick google search says that coal has 8000-13000 BTU per pound and that a BTU equals 2.93X10^-4 KWh, Assume that power generation is 50% efficient at extracting the energy in coal. So with a little math Stu's solar electric system has generated 3.7 KWh worth of electricity. CarlBoyd |
#8
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Solar Power
"Carl" wrote in message ... On Jul 17, 6:33 pm, "Phil Kangas" wrote: "Stu Fields" wrote in message "Stu Fields" wrote in message I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. 500 pounds of CO2 in six days? That's an incredible amount! I'm a bit suspicious of that number. How can it be so high? Anyone care to explain? I don't believe it........ phil Phil Let me take a stab at that one, I will make educated guesses as needed. 500 pounds C02 equates to 136 pounds of carbon and 364pound of Oxygen I believe that they are assuming the solar power is replacing electricity derived from coal, oil, or natural gas. I'll use coal (because it seems easier right now) but I don't believe it will make a big difference. Assume that coal is mostly composed of long hydrocarbon chains the carbon to hydrogen ratio is roughly 1/2 on an atom basis, but 12/2 on a weight basis, so the 136 pounds of carbon came from 159 pounds of coal. A quick google search says that coal has 8000-13000 BTU per pound and that a BTU equals 2.93X10^-4 KWh, Assume that power generation is 50% efficient at extracting the energy in coal. So with a little math Stu's solar electric system has generated 3.7 KWh worth of electricity. CarlBoyd Carl: Our average usage has been about 40kwh/day. Our meter numbers are slightly decreasing. We appear to be generating more than we use... According again to the display we are producing around 40+kwh/day. 30-230w panels. For me the best part is to watch the meter wheel turn backwards.... |
#9
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Solar Power
"Phil Kangas" wrote in message ... "Stu Fields" wrote in message "Stu Fields" wrote in message I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. 500 pounds of CO2 in six days? That's an incredible amount! I'm a bit suspicious of that number. How can it be so high? Anyone care to explain? I don't believe it........ phil Now I don't blame you a bit. Just think if 1,000 people had the same size system going, not hard to believe, that would be 500,000 # of Co2 saved in 6 days. That would mean 30M#/yr. Lets see...would that mean the power plants could go back to burning diesel and coal?? Would we have to artificially inject Co2 into the atmosphere for plant life? Yeah 500# in 6 days causes my eyebrow to raise, but that is what the display says. Maybe its really grams... |
#10
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Solar Power
On Sat, 17 Jul 2010 19:07:22 -0700, Stu Fields wrote:
"Phil Kangas" wrote in message "Stu Fields" wrote in message "Stu Fields" wrote in message I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. 500 pounds of CO2 in six days? That's an incredible amount! I'm a bit suspicious of that number. How can it be so high? Anyone care to explain? I don't believe it........ phil Now I don't blame you a bit. Just think if 1,000 people had the same size system going, not hard to believe, that would be 500,000 # of Co2 saved in 6 days. That would mean 30M#/yr. Lets see...would that mean the power plants could go back to burning diesel and coal?? Would we have to artificially inject Co2 into the atmosphere for plant life? Yeah 500# in 6 days causes my eyebrow to raise, but that is what the display says. Maybe its really grams... You could save 1 KG of CO2 a day by not exhaling: "The average person has a breath with the volue of 500ml (0.5l) "A normal intake of breath is normal atmospheric composition, as such contains 0.0360% CO2 or 0.18ml of CO2 intake. However we breathe out about 5% CO2 or 25ml with an average of 13,000 breaths a day. Thats 325,000ml (325L )of CO2 Which means by the end of the day, a person on average will exhale 1kg of CO2. Now add there are 6 billion people alive we can say humans exhale 6 billion kg of CO2 a day. "Compare that to the fact that as a rough estimate, the burning of one litre of gasoline produces about 2.4 pounds (1.08kg) of CO2. A really good north American car will get 40mpg which is still only 18km to the litre, which means for every 18 km that you drive, you will release 2.4 lbs (1.08 kg) of CO2 or roughly what you breathe in a day. Source(s): Climate Change Research" -- http://answers.yahoo.com/question/in...3091421AA830QK Just a thought.... ;-) Cheers! Rich |
#11
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Solar Power
On Fri, 23 Jul 2010 17:36:15 -0700, Rich the Cynic
wrote the following: On Sat, 17 Jul 2010 19:07:22 -0700, Stu Fields wrote: "Phil Kangas" wrote in message "Stu Fields" wrote in message "Stu Fields" wrote in message I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. 500 pounds of CO2 in six days? That's an incredible amount! I'm a bit suspicious of that number. How can it be so high? Anyone care to explain? I don't believe it........ phil Now I don't blame you a bit. Just think if 1,000 people had the same size system going, not hard to believe, that would be 500,000 # of Co2 saved in 6 days. That would mean 30M#/yr. Lets see...would that mean the power plants could go back to burning diesel and coal?? Would we have to artificially inject Co2 into the atmosphere for plant life? Yeah 500# in 6 days causes my eyebrow to raise, but that is what the display says. Maybe its really grams... You could save 1 KG of CO2 a day by not exhaling: "The average person has a breath with the volue of 500ml (0.5l) "A normal intake of breath is normal atmospheric composition, as such contains 0.0360% CO2 or 0.18ml of CO2 intake. However we breathe out about 5% CO2 or 25ml with an average of 13,000 breaths a day. Thats 325,000ml (325L )of CO2 Which means by the end of the day, a person on average will exhale 1kg of CO2. Now add there are 6 billion people alive we can say humans exhale 6 billion kg of CO2 a day. "Compare that to the fact that as a rough estimate, the burning of one litre of gasoline produces about 2.4 pounds (1.08kg) of CO2. A really good north American car will get 40mpg which is still only 18km to the litre, which means for every 18 km that you drive, you will release 2.4 lbs (1.08 kg) of CO2 or roughly what you breathe in a day. Source(s): Climate Change Research" -- http://answers.yahoo.com/question/in...3091421AA830QK Just a thought.... ;-) Rich, please now compare how many extra breaths that carload or busload of people would expend hoofin' it from place to place for that liter of gas. I'll bet the gas is more efficient in the long run, not to mention getting people to work on time, getting all errands done in the same day, etc. -- Exercise ferments the humors, casts them into their proper channels, throws off redundancies, and helps nature in those secret distributions, without which the body cannot subsist in its vigor, nor the soul act with cheerfulness. -- Joseph Addison, The Spectator, July 12, 1711 |
#12
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Solar Power
On Sat, 17 Jul 2010 18:33:41 -0400, Phil Kangas wrote:
"Stu Fields" wrote in message "Stu Fields" wrote in message I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. 500 pounds of CO2 in six days? That's an incredible amount! I'm a bit suspicious of that number. How can it be so high? Anyone care to explain? I don't believe it........ The software was provided by IPCC.... Cheers! Rich |
#13
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Solar Power
On Sat, 17 Jul 2010 08:56:55 -0700, Stu Fields wrote:
"Stu Fields" wrote in message .. . I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. I made a mistake the thing this am says 500# of Co2 saved. Is this the same software that the IPCC used to give use the hockey stick? Thanks, Rich |
#14
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Solar Power
On Sat, 17 Jul 2010 07:56:22 -0700, "Stu Fields" wrote:
I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. So you are no longer mig welding with any Co2 related product? G Gunner One could not be a successful Leftwinger without realizing that, in contrast to the popular conception supported by newspapers and mothers of Leftwingers, a goodly number of Leftwingers are not only narrow-minded and dull, but also just stupid. Gunner Asch |
#15
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Solar Power
"Gunner Asch" wrote in message ... On Sat, 17 Jul 2010 07:56:22 -0700, "Stu Fields" wrote: I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. So you are no longer mig welding with any Co2 related product? G Gunner Nope. I've never done the MIG thing. I'm a TIGer and only use pure Argon.. And use the Co2 saved to belabor my Green Friends. I can't get too excited about the Green movement until they start including population as a major factor. |
#16
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Solar Power
"Stu Fields" on Sat, 17 Jul 2010 14:08:24 -0700 typed
in rec.crafts.metalworking the following: "Gunner Asch" wrote in message .. . On Sat, 17 Jul 2010 07:56:22 -0700, "Stu Fields" wrote: I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. So you are no longer mig welding with any Co2 related product? G Gunner Nope. I've never done the MIG thing. I'm a TIGer and only use pure Argon.. And use the Co2 saved to belabor my Green Friends. I can't get too excited about the Green movement until they start including population as a major factor. If only they would cease to exhale CO2 with every breathe. tschus pyotr -- pyotr filipivich We will drink no whiskey before its nine. It's eight fifty eight. Close enough! |
#17
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Solar Power
"Stu Fields" wrote:
Nope. I've never done the MIG thing. I'm a TIGer and only use pure Argon.. And use the Co2 saved to belabor my Green Friends. I can't get too excited about the Green movement until they start including population as a major factor. Think how much carbon is saved by keeping an illegal in mexico. Wes -- "Additionally as a security officer, I carry a gun to protect government officials but my life isn't worth protecting at home in their eyes." Dick Anthony Heller |
#18
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Solar Power
On Sat, 17 Jul 2010 13:21:16 -0700, Gunner Asch wrote:
On Sat, 17 Jul 2010 07:56:22 -0700, "Stu Fields" wrote: I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 If Al Gore is reading this a text message of applause would be nice. So you are no longer mig welding with any Co2 related product? G He's mig welding on solar cells? Damn! That's a lot of electricity! Thanks, Rich |
#19
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Solar Power
On Fri, 23 Jul 2010 17:37:24 -0700, Rich the Cynic
wrote: He's mig welding on solar cells? Damn! I've been doing various kinds of welding on solar and wind power for about 15 years. http://www.citlink.net/~wmbjk/images...28Small%29.jpg That's a lot of electricity! Not really. I probably average about 4kW when welding, but that's usually not for very long. An hour of "welding" tends to be about 55 minutes of fitting, jigging, grinding, etc. 5 minutes at 4kW and 10 cents per kWh is about 3 cents worth. Most days when I'm welding, the overhead lighting, grinders, saws and air tools use more energy. Wayne |
#20
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Solar Power
On Sun, 25 Jul 2010 11:16:30 -0700, Steve Ackman
wrote: It takes a LOT of energy to produce PV panels. From what I've read, Let's see the cite. 'Cause I've read that Elvis is alive, working at 7-eleven by day, and posting to usenet at night. :-) a PV panel will never make up the carbon it cost in its expected 25 year life span. This study says 3 years for energy payback. http://www.nrel.gov/docs/fy04osti/35489.pdf This one says 6 years for carbon payback. http://eprints.ucl.ac.uk/2642/1/2642.pdf Both numbers expected to improve substantially. Wayne |
#22
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Solar Power
On Sun, 25 Jul 2010 16:38:02 -0500, cavelamb
wrote: wrote: On Sun, 25 Jul 2010 11:16:30 -0700, Steve Ackman wrote: It takes a LOT of energy to produce PV panels. From what I've read, Let's see the cite. 'Cause I've read that Elvis is alive, working at 7-eleven by day, and posting to usenet at night. :-) a PV panel will never make up the carbon it cost in its expected 25 year life span. This study says 3 years for energy payback. http://www.nrel.gov/docs/fy04osti/35489.pdf That didn't look like MANUFACTURING payback, just purchase cost payback I don't know what the heck you're talking about. The chart on the first page is clearly titled "*energy* payback of rooftop pv systems". The first paragraph explains that it takes energy to build the product, and the summary of data says that the product makes more energy in a small percentage of its lifetime than was required to create it. NREL says up to 3 years, while some others rate it in months, depending on the variables. People who pretend that PV consumes more energy than it produces are promulgating a long-debunked myth. This one says 6 years for carbon payback. http://eprints.ucl.ac.uk/2642/1/2642.pdf Both numbers expected to improve substantially. Wayne! You might want to read that one again... It said " The carbon payback for solar thermal system is 2 years, the BIPV system has a payback period of 6 years. ??? There seems to be an echo in here. :-) Simple economic payback for both systems is over 50 years(!) That wasn't at issue here. But simple economic payback for most of US is much shorter, some people report only a few years in good-sun, high utility-rate areas. In low-sun, low-rate areas, there is no simple payback, especially since we're fine with putting off the cost of so many things onto future generations, and hence frequently exclude obvious outside costs. For example, if you believe that PV is expensive, then think about how much of our healthcare costs are the result of pollution from power production. Too much work? Then see here http://www.usdebtclock.org/ for a partial tally of how well that "easier for someone else to pay later" strategy is working out. At no time did they say anything about MANUFACTURING payback! Page 4, table 1. Note "embodied energy and carbon". How do you imagine that those get into the product? See here for more details and references. www.ongrid.net/papers/PVvsInputEnergySWCph.pdf Wayne |
#23
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Solar Power
On 7/25/2010 11:16 AM, Steve Ackman wrote:
, on Sat, 17 Jul 2010 07:56:22 -0700, Stu Fields, wrote: I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 It takes a LOT of energy to produce PV panels. From what I've read, a PV panel will never make up the carbon it cost in its expected 25 year life span. How much energy is required to plant crops and create oil from the harvest? Does it take longer than 25 years? --Winston -- Needs to know |
#24
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Solar Power
On 7/26/2010 9:19 AM, Winston wrote:
On 7/25/2010 11:16 AM, Steve Ackman wrote: , on Sat, 17 Jul 2010 07:56:22 -0700, Stu Fields, wrote: I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 It takes a LOT of energy to produce PV panels. From what I've read, a PV panel will never make up the carbon it cost in its expected 25 year life span. How much energy is required to plant crops and create oil from the harvest? Does it take longer than 25 years? While it's possible to do that and it is efficient from an energy viewpoint we're already seeing the unintended consequences in rising food prices. |
#25
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Solar Power
On Mon, 26 Jul 2010 06:19:00 -0700, Winston
wrote the following: On 7/25/2010 11:16 AM, Steve Ackman wrote: , on Sat, 17 Jul 2010 07:56:22 -0700, Stu Fields, wrote: I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 It takes a LOT of energy to produce PV panels. From what I've read, a PV panel will never make up the carbon it cost in its expected 25 year life span. How much energy is required to plant crops and create oil from the harvest? Does it take longer than 25 years? Not much at all, and no, respectively. Any other questions? -- It is pretty hard to tell what does bring happiness; poverty and wealth have both failed. -- Kin Hubbard |
#26
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Solar Power
On 7/26/2010 7:48 PM, Larry Jaques wrote:
On Mon, 26 Jul 2010 06:19:00 -0700, wrote the following: On 7/25/2010 11:16 AM, Steve Ackman wrote: , on Sat, 17 Jul 2010 07:56:22 -0700, Stu Fields, wrote: I forgot to mention in 6 days of operation, our new solar panel system claims to have saved: Are you ready? 300# of Co2 It takes a LOT of energy to produce PV panels. From what I've read, a PV panel will never make up the carbon it cost in its expected 25 year life span. How much energy is required to plant crops and create oil from the harvest? Does it take longer than 25 years? Not much at all, and no, respectively. Any other questions? Sure! It has taken many times the carbon released by oil to grow its precursor plants and convert them to petrochemicals over a time scale of millions of years, yes? When is the carbon cost recovered, if we applied the same bookkeeping techniques to oil as we do to alternative solar? Plant and harvest hundreds of acres. Seal the crops in a super pressure chamber for say 5 million years. Decant, refine and enjoy. When will that oil make up the carbon it cost to produce? Let's go with 'never', yes? Let's break the horses legs *after* the race. Then our performance comparisons might have some validity. --Winston |
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