Recent content by moatilliatta
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Graduate Does the atmosphere cool with altitude due to gravity?
I'm pretty sure I said that :cool: And I get where your coming from with the whole "one molecule in a box", but Drakkith is right. A gas isn't just one molecule, it's many and that makes it way more complicated. Despite earlier successes, this VO is once again insisting that hydrostatic...- moatilliatta
- Post #64
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
Let me try to distil this new device down to something simple for Kyle. The barometric formula for an isothermal body of gas is Ptop=Pbasee-Mgh/RT Because temperature is found in the denominator of the negative exponent, the higher the temperature, the less pressure falls for a given...- moatilliatta
- Post #60
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
I've had some time to look at this new one. Here is a spreadsheet I've made: https://docs.google.com/spreadsheets/d/19kqXiOmVe0kTX7JdSvBFoSfhlE2uITBScq2tn82udZg/edit?usp=sharing I was thinking this thing would produce net zero like the last, if the height of the tall column formula was...- moatilliatta
- Post #57
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
I've just cleaned up my inbox and saw an email from medium linking me to this: https://medium.com/criminal-clouds/the-drop-down-cycle-part-3-of-3-af7d54b3142b#.ljgxauq3z Looks like VO came up with a new version of part 3 a couple of weeks back. I've only had a brief look and am yet to work out...- moatilliatta
- Post #56
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
Votingmachine, Excuse the late response; I was had a conference last week and have been flat out catching up with things. At the top, the nbottom is expanded and preforms work, but not without clearing room for the gas in the atmosphere, which requires work. At the bottom, ntop has to be...- moatilliatta
- Post #55
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
I can't accept an above zero answer because it is perpetual motion! The logic of DrStupid didn't make sense until willem2 explained it differently. Afterwards I got a pen and paper out and was able to determine that W2 + W4 is equal to half what Vanquish Opprobrium had calculated, same...- moatilliatta
- Post #39
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
What I mean is for the expansion into a non-vacuum. If that formula is used in place, it would be an even better perpetual motion machine!- moatilliatta
- Post #37
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
Yes,you must be right. So if that is the wrong formula, what is the right formula for the process?- moatilliatta
- Post #35
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
Hi DrStupid, I'm very glad someone is having a go at this. I'm not sure I'm reading you correctly, but I am pretty sure the vessel does not expand. I think its quite clear that the energy is harnessed from air moving through expanders that are stuck to side of the elevator shaft. There is no...- moatilliatta
- Post #31
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
From a practical sense I think you have a point. I don't think this thing is going to be putting any coal mines out of business. However everything in the isothermal elevator's idealistic scenario is thermally connected and true isothermal expansion is quasi-static. Everything in that system has...- moatilliatta
- Post #27
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
Best to have a closer read votingmachine, The gas containing vessel is lifted by a pulley inside an elevator shaft. I'm guessing that the elevator shaft is a vacuum so buoyancy doesn't have to be factored in, not to actually conduct the work. Because of this, I'm actually quite confident on the...- moatilliatta
- Post #25
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
I thought that atmospheric lapse was mainly a result of adiabatic heating and cooling resulting from convection. My bad So a Hydrostatic Gas is Isothermal. Thanks for answering the question. Could you please also explain why...- moatilliatta
- Post #21
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
Seems too simple an explanation of a complicated topic. This logic works well when explaining why you should move away from a camp-fire when you want to cool down, but works less well when dealing with the earth. The inverse square law may not have much of an effect when you consider the...- moatilliatta
- Post #18
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
I would expect the warm breaths of cold hearted Nazis to rise, given what I know about convection. As those breaths rise they will be moving from higher pressure low elevations to lower pressure high elevations, resulting in adiabatic cooling of the moisture laden breaths. If the dome is the...- moatilliatta
- Post #16
- Forum: Thermodynamics
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Graduate Does the atmosphere cool with altitude due to gravity?
https://docs.google.com/spreadsheets/d/1GBcf9imIkRdGd54UbzpvH4R2kQwndfQ6gQD_7GNpMoI/edit#gid=0 linked- moatilliatta
- Post #13
- Forum: Thermodynamics