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(...) I'd take serious challenge to that statement. The best steam only power plants are in the 45-47% range of effiency (input to output). Mind you, they DON"T MOVE!... When done correctly, steam has a cycle effiency of ~12% on the rails (I can get (...) (23 years ago, 1-Nov-01, to lugnet.trains)
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| | Re: Gray VS. Black Metroliner Nose
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(...) You can challenge it all you want. But you're not arguing with ME, you're arguing with thermodynamics. (unless you can show I've misapplied it) (...) and I bet their operating temperature differential is higher, too, being stationary. That's (...) (23 years ago, 1-Nov-01, to lugnet.trains)
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| | Re: Gray VS. Black Metroliner Nose
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(...) I'm not, since that can lead to ratios greater than one which is wrong. It's (operating - ambient)/operating which means run in colder climates (absolute zero is ideal if you can find it... hence heat engines can be quite efficient in shaded (...) (23 years ago, 1-Nov-01, to lugnet.trains)
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| | Re: Steam power (was: something else...)
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(...) Since I'm quite sure you are arguing (Larry? Argue??) temperatures that are well above the range that LEGO trains run, I'd suggest .off-topic.geek... JohnG, GMLTC (23 years ago, 1-Nov-01, to lugnet.trains)
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| | Re: Steam power (was: something else...)
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(...) lol good point, J-1-- getting a little too esoteric for we simple folk;-) J-2 (...) (23 years ago, 1-Nov-01, to lugnet.trains)
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| | Re: Gray VS. Black Metroliner Nose
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(...) I can ask, but I believe the info was 1050F x3 reheat stages, and 47.5% overall. Yes, they are all governed by Carnot cycle (diesel and steam both...) (...) Yep. So did Stirling, who had it even better, since his cycle with regenerator is (...) (23 years ago, 2-Nov-01, to lugnet.trains)
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| | Re: Steam power (was: something else...)
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(...) Whilst we are getting all esoteric about steam engines, I was reminded of a presentation I saw a week so ago which partly covered Brunel's “Atmospheric Railway”. Basically, IKB tried to built a steam powered railway without a “locomotive”… and (...) (23 years ago, 14-Mar-02, to lugnet.trains)
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