Page 3 of 4 FirstFirst 1234 LastLast
Results 51 to 75 of 89
  1. #51
    Veteran hater's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Feb 2007
    Post Count
    74,105
    wake me up when this is possible:


  2. #52
    The D.R.A. Drachen's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Nov 2004
    Post Count
    11,214
    they should find a way to get the same mileage on little use of oil...fkn nobody gives a how m uch emissions a car makes....everyone is more concern with can they afford to pay at the pump
    (oil is used to make gasoline, a more efficient engine = little use of oil)

    Plus, as was said above, run it on natgas.

  3. #53
    Believe. CubanMustGo's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    10,567
    No . It would make the current power plants obsolete. An efficient local 25KW generator (running on cheap natural gas) can power 4+ average houses during peak summertime A/C loads in Texas.
    Since scaling up seems to be an issue, I'd be thrilled to have a personal 5KW generator.

  4. #54
    Spur-taaaa TDMVPDPOY's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Feb 2005
    Post Count
    41,384
    (oil is used to make gasoline, a more efficient engine = little use of oil)

    Plus, as was said above, run it on natgas.
    gas as in LPG? that is steadily going up in price also

    even a country like australia who dugs that up is chargin its people more than what the arab oil producing nation charges its people per litre for petrol....fkn pathetic

  5. #55
    I play pretty, no? TeyshaBlue's Avatar
    My Team
    Dallas Mavericks
    Join Date
    Jun 2006
    Post Count
    13,321
    gas as in LPG? that is steadily going up in price also

    even a country like australia who dugs that up is chargin its people more than what the arab oil producing nation charges its people per litre for petrol....fkn pathetic
    CNG...different animal than LPG.

  6. #56
    The D.R.A. Drachen's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Nov 2004
    Post Count
    11,214
    CNG...different animal than LPG.
    thank you...

    Here you go TDMVP

    http://www.eia.gov/dnav/ng/hist/n9190us3m.htm

  7. #57
    I am that guy RandomGuy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    51,121
    It seems very strange that the LAST mention of this thing on any internet link is a year old, especially since the prototype was supposed to be ready three months ago. Whats up with that?
    They did their academic paper in early 2011, and said that they would have some better prototypes by the end of 2012.

    I saw some chatter about 2013 for a bigger rollout.

    Nothing in the news.

    This is interesting to me, I might contact the man directly. He appears to be German, so I have an ice-breaker already.

  8. #58
    The D.R.A. Drachen's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Nov 2004
    Post Count
    11,214
    They did their academic paper in early 2011, and said that they would have some better prototypes by the end of 2012.

    I saw some chatter about 2013 for a bigger rollout.

    Nothing in the news.

    This is interesting to me, I might contact the man directly. He appears to be German, so I have an ice-breaker already.
    That's right, you speak german, no?

    RG: I have been interested in this (theoretically) ever since I studied physics at the Gymnasium. After the Abitur, I came to America....

  9. #59
    I am that guy RandomGuy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    51,121
    CNG...different animal than LPG.
    Oddly enough, I would imagine that propane would be a good alternative for this kind of engine as well.

    Given that the US will likely become a large exporter of it after the LNG terminal in Louisiana gets built.
    http://www.marke ch.com/story/bla...ect-2012-02-27


    That will likely have a greater impact on gas prices in the short term. Some trucks can be rigged to run on propane and do now, they will become more compe ive with gasoline/diesel, and further reduce demand.

    China, with its gasoline subsidies, is building up its economy to be much more dependent on oil than the US.

    This type of engine would also find uses in places other than cars, if it is as efficient as they say it is.

    Trains, ships, etc.

    Modern trains are essentially huge diesel generators and power their wheels using electric motors.

    Scale up the tech in the OP to that size, and you have just cut fuel costs for trains.

    Scale it up to run a turboprop plane? I don't know.

    , I will definitely be calling the good professor. This is fascinating.

  10. #60
    Veteran DarrinS's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    42,561
    The future is here




  11. #61
    I am that guy RandomGuy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    51,121
    That's right, you speak german, no?

    RG: I have been interested in this (theoretically) ever since I studied physics at the Gymnasium. After the Abitur, I came to America....
    I hold a degree in Germanic arts from UT at Austin.

    Ich uebe, wenn ich kann, aber vesgesse mehr als ich moechte.

    (I practice, when I kann, but forget more than I would like to)

    Oddly enough the English word order works there too. Heh German a language that verbs at the end to put likes. A nation of Yodas, you should imagine, heh.

  12. #62
    The D.R.A. Drachen's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Nov 2004
    Post Count
    11,214
    I hold a degree in Germanic arts from UT at Austin.

    Ich uebe, wenn ich kann, aber vesgesse mehr als ich moechtet.
    Ja ich war fliessent, aber ueben kann ich nicht oft. Deswegen habe ich mein Deutsch verlernt.

  13. #63
    Mr. John Wayne CosmicCowboy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Mar 2003
    Post Count
    44,136
    Hmmmm...doing the math.

    Peak summertime load for an average house in the summertime should be about 4000kwh a month...your mileage may vary.

    Natural gas costs (at the house) currently .701 per hundred cubic foot or rule of thumb 100,000 BTU.

    At 60% efficiency 100 cu ft foot would input 60,000 btu

    there are 3,412 BTU per KW.

    So 100 cu ft gas could potentially generate 17.5 kw of electricity (obviously with some generator loss)

    4000kwh per month / 17.5 kw = 229 cu ft month X .701 or $160 a month in natural gas compared to $340 (@ .085 per kwh CPS rate) of CPS generated electricity

    Sounds like it beats the out of PV panels even with the rebates and tax credits (of course it's not "renewable")

  14. #64
    The D.R.A. Drachen's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Nov 2004
    Post Count
    11,214
    Hmmmm...doing the math.

    Peak summertime load for an average house in the summertime should be about 4000kwh a month...your mileage may vary.

    Natural gas costs (at the house) currently .701 per hundred cubic foot or rule of thumb 100,000 BTU.

    At 60% efficiency 100 cu ft foot would input 60,000 btu

    there are 3,412 BTU per KW.

    So 100 cu ft gas could potentially generate 17.5 kw of electricity (obviously with some generator loss)

    4000kwh per month / 17.5 kw = 229 cu ft month X .701 or $160 a month in natural gas compared to $340 (@ .085 per kwh CPS rate) of CPS generated electricity

    Sounds like it beats the out of PV panels even with the rebates and tax credits (of course it's not "renewable")
    What did you end up finding out about PV as far as cost? It would seem that you would more than the 200 bucks

  15. #65
    Mr. John Wayne CosmicCowboy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Mar 2003
    Post Count
    44,136
    What did you end up finding out about PV as far as cost? It would seem that you would more than the 200 bucks
    I'm still looking at it. They are claiming "40 year life on the panels and inverters" with no maintenance though. Guarantee on the panels is 90% production after 20 years. Inverters have 5 year guarantee.

  16. #66
    I am that guy RandomGuy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    51,121
    Hmmmm...doing the math.

    Peak summertime load for an average house in the summertime should be about 4000kwh a month...your mileage may vary.

    Natural gas costs (at the house) currently .701 per hundred cubic foot or rule of thumb 100,000 BTU.

    At 60% efficiency 100 cu ft foot would input 60,000 btu

    there are 3,412 BTU per KW.

    So 100 cu ft gas could potentially generate 17.5 kw of electricity (obviously with some generator loss)

    4000kwh per month / 17.5 kw = 229 cu ft month X .701 or $160 a month in natural gas compared to $340 (@ .085 per kwh CPS rate) of CPS generated electricity

    Sounds like it beats the out of PV panels even with the rebates and tax credits (of course it's not "renewable")
    If it can be configured to run on methane, all you need is poop. That is about as renewable as anything, and something I am sure someone with a ranch can get in good supply.

  17. #67
    Mr. John Wayne CosmicCowboy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Mar 2003
    Post Count
    44,136
    What did you end up finding out about PV as far as cost? It would seem that you would more than the 200 bucks
    It's still a load of money out of pocket. On a 12kwh system at $5 a watt the initial cost would be $60,000 less the $24,000 CPS rebate.

    So $36,000 out of pocket and you can take a 30% tax credit on it.

    So, after you finally get your tax credits back the out of pocket cost is $25,200 to save $175 a month.

  18. #68
    Mr. John Wayne CosmicCowboy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Mar 2003
    Post Count
    44,136
    If it can be configured to run on methane, all you need is poop. That is about as renewable as anything, and something I am sure someone with a ranch can get in good supply.
    Methane is a ing terribly dirty, corrosive, and wet gas to work with. I have a lot of experience with it working on systems at the SAW's treatment plants trying to use the waste methane to heat the digestors.

  19. #69
    Veteran DarrinS's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    42,561
    If it can be configured to run on methane, all you need is poop. That is about as renewable as anything, and something I am sure someone with a ranch can get in good supply.
    But

    http://www.epa.gov/methane/

    Damn.

  20. #70
    I am that guy RandomGuy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    51,121
    I'm still looking at it. They are claiming "40 year life on the panels and inverters" with no maintenance though. Guarantee on the panels is 90% production after 20 years. Inverters have 5 year guarantee.
    The panels they first built in the 1960's are still cranking out power.

    From what I read, the 2% per year loss that most people assume after about 10 years is probably more severe than will be experienced.

    The inverter will wear out before the panels will experience any large loss in capacity.

    Since the first panels from the 60's are still cranking out power, no one really knows how long they last, simply by virtue of the fact that it wasn't really widespead, and the panels, with no moving parts, haven't worn out yet.

    That is one of the things that I like about PV is that there aren't any moving parts and the panels last a looooong time.

    When one burrows into the math, if one assumes a fuctional life of 50 years, PV has some rather clear advantages over other forms of power that require moving turbines. Some hydrogenerators last that long too, but you are limited a bit more as to where you can site them.

  21. #71
    I am that guy RandomGuy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    51,121
    Methane is a ing terribly dirty, corrosive, and wet gas to work with. I have a lot of experience with it working on systems at the SAW's treatment plants trying to use the waste methane to heat the digestors.
    Good to know.

    They managed to do it for the big Boston project. Saw a thing on Discovery about it. Fascinating state-of-the-art sewage treatment.

  22. #72
    I am that guy RandomGuy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Jun 2005
    Post Count
    51,121
    (facepalm)

    You did get that I was suggesting capturing methane that was already being produced and using it as fuel right? (thereby preventing the methane from being released in favor of CO2 as a byproduct)

  23. #73
    Mr. John Wayne CosmicCowboy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Mar 2003
    Post Count
    44,136
    I'm having someone send me their calculations on how PV will give me a 7 year payback. One thing they mentioned that I hadn't factored in was the CPS increases their rates 3% a year. That adds up pretty fast over 20 years.

  24. #74
    The D.R.A. Drachen's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Nov 2004
    Post Count
    11,214
    It's still a load of money out of pocket. On a 12kwh system at $5 a watt the initial cost would be $60,000 less the $24,000 CPS rebate.

    So $36,000 out of pocket and you can take a 30% tax credit on it.

    So, after you finally get your tax credits back the out of pocket cost is $25,200 to save $175 a month.
    Ok, I know that a 12 kwh system doesn't necessarily produce that much, but why won't that large of a system take care of all of your power needs (that summer 340 dollar cps bill you referenced above) especially since you referenced 4k per month above.


    Incidentally, when I checked into it in late 2009 a 4 Kwh system was 50k (or 16k after tax credits) so that is a pretty dramatic price drop in a short period of time.

  25. #75
    Mr. John Wayne CosmicCowboy's Avatar
    My Team
    San Antonio Spurs
    Join Date
    Mar 2003
    Post Count
    44,136
    Good to know.

    They managed to do it for the big Boston project. Saw a thing on Discovery about it. Fascinating state-of-the-art sewage treatment.
    , I redesigned SAW's system after their engineers totally ed it up on the original install and trashed $100,000+ of equipment. My redesign is now the pattern they use on all their digestors.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •