A no-moving-parts isothermal / isobaric cycle heat engine

The sun delivers 62 million gigawatts to the land and water of the earth. That same energy is re-radiated out into space. We can capture tiny amounts using machines such as the air compressor described here.

Please digg this. Thanks.

Well, we're coming up on 24 hours on the digg queue, and absolutely no one has dugg the story. At least I got some traffic here: apparently about 12 people clicked 4 links each from the Renewable Energy Design article. I can't tell how people got to Renewable Energy Design, because wikia.com doesn't release referrer data, or actually, any page view data at all (since they use a proxy that hides all activity from the MediaWiki software). But I suspect that the traffic came from the heat engine related yahoo groups and other blogs I posted the story on, and not from digg.

read more | digg story

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One Response to “A no-moving-parts isothermal / isobaric cycle heat engine”

  1. bernie Says:

    Although I am not an engineer, I am a fan of thermodinamics, I find this gas liquid bubble PrombePump really interesting. The simplicity of design is very good.
    You may have heard the riddle that enquires ” What is the time piece with the most moving parts?”. The answer being ” The hour glass”.

    It would seem that the TrombePump has itself, zillions of moving parts. The water being part of the most essential geometry of the machine. The slow movement of the water and its, hinderence,pushing and drawing of the air, a maniplulation not unlike, in a slight way, the pistons or fan rotors of internal combustion engines.
    I underatand that the engine runs very slowly and is proposed to be very large. So I would ask these questions

    What if the water ( truly a liquid ) was replaced with a gas that is unlike air in any way, will not mix with or is so completely opposite as to be resistant and remain separate at all times from the air (obviously many gases mixed already] might this be possible ?.
    Is there such a gas?
    Could it be made?
    I wouldn’t presume to know what this gas may be, but if there were such a gas , the engine could perhaps run at a far greater rate and may also be reduced in size.
    What if there were no water or restrictive gas equivalent. That there was only air in the loop. A single gaseous system as in a heat tube?

    These Questions have led me to a possible outcome in my own endeavour. I have been working lately on a design for a high speed enclosed loop gas turbine with one moving part. This makes use of the stirling cycle using dry air as the working medium. An obsticle I have, is in the regeneration. I have had need of a group of additional closed loop stirling based heat exchangers with no mechanical working parts to facilitate the conservation and transfer of heat from the compression chambers to the central core of this engine where the returning compressed and cooled air is on its journey returning to the hot end of the propulsion unit by way of the preload cavity surrounding the, entire engine length, foil journal bearing.
    Thought of using heat sink pipes internally coated with perhaps powdered tungsten and gas vapour filled. Although I’m not entirely keen on the use of any other gaseous material other than air.
    Designers of modern jet engines desire heat in only one area of the engine and regard heat anywhere else as being the enemy, so incorporate the use of hollow fan rotors in the compression chambers to aid in cooling of same. So I will adopt this hollow fan idea of theirs and attempt to conserve rather than discard by making the fan blades themselves my heat transfer pipes.
    Please disregard anything resembling the ravings of an old man

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