RHOMBIC DRIVE STIRLING CYCLE ENGINE PART TWO

[MilanKarakas]

Excellent work!

[bluephantm]

You should really have the cooling water running when you operate as a heat pump. Otherwise you will bake your cold side seals. I have made this mistake.

[lexander5]

Very nice. But where will you place the burner?

[barumman]

@lexander5

Watch the rest of the videos and you will see, :)

[chuckbear1961]

Freonless referigeration? maybe something new

[vincent7520]

As far as I understand the stirling engine is run by electricity and is used as a compressor to produce cold.

Or did I miss something ?…

[barumman]

@vincent7520

Hi Vincent, Yes you missed something, watch all the videos in the series and all will be revealed.

Best wishes, Cyril

[royalbrainwave]

Can you make more camera noises? Maybe really fondle that camera so it makes more cracking and clicky sounds, really makes the video pop.

[SmoggyTurnip]

Wow!

[piespokladowy]

Super!

[barumman]

Right.

[MotesTV]

I just watched the whole video about how the two directions of rotation control whether it heats or cools.

[MotesTV]

When running a stirling the displacer, or expansion, leads the power piston, or compression, by 90 degrees. Does running a stirling in cooling mode have it inverted? Does the expansion then lag the compression by 90 degrees, does one run the engine 'backward' to cool?

[NickBlackDIN]

hmm, i wonder if I could use this to cool my computer's CPU...

[highvoltagefeathers]

@FrankaDith man learn to keep shit to yourself cause your inane criticism fuck,s up his genius big time.

[NOBOX7]

very neet that adding energy to that device causes a cooling effect

[r3inhout]

@barumman Could you let the engine run on solar heat and use the forst-side to cool say a fridge? If you made it big I mean...

[barumman]

@r3inhout

 No I'm afraid not,

[MotesTV]

@barumman what if you had two engines, one running from heat and the other making frost, you could make a cooler with that, right?

[EmperorOfMars]

@barumman Why can't you make a rudimentary refrigerator with this engine?

[IIDASHII]

@barumman

What about running the engine on solar electricity or a windmill and putting the cold side in a well, insulated container. That would feasibly make a refrigerator, right?

[ace2a66d20]

@r3inhout The Stirling cycle uses a temperature difference to produce work and (as shown in this video) can do the opposite (work to temperature difference). You may want to look into ammonia absorption cycle refrigerators. traditionally they used heat from propane but old units can be adapted to use solar heat and there are purpose built new units that are made to work with lower temperature solar heat sources.

[painta76]

I can't see why it couldn't if you use a parabolic heat collector to run your stirling engine

[Lord00Henry]

Great job, congratulations!

[Hiraghm]

This would make a cool CPU cooler for a steampunk computer system :D

[lt379]

wow nobody cares about the fucking frost on top i'm pretty sure everyone has seen frost, why dont show us how the thing actually works instead of waiting for frost to disappear

[barumman]

@FrankaDith

Splash lubrication

[serrucho1]

Hi, why rombic? it is more efficient than other kind Stirling? How did you made the heat collector? anyway, very good work. greetings.

[highvoltagefeathers]

@serrucho1 cause he can! and its pretty cool,

[565Customz]

so i could run a stirling engine, with a stirling engine...and refrigerate my beer for free?

[futurehipay]

noooo you gotta put energy into the system at some point! no free energy. you cant run both systems and cool your beer forever, your beer would eventually run out of heat to give to the stirling, although if you had infinity beers...

[cableairman]

yes they already use them as cryocoolers. goto wiki pedia and read about stirling engines

[hexyournightmare]

man you rull...but i have a question...did you measure the temperature of that part of the motor?....someone could use that in other applications like...computer cooling or stuff like that :D try to measure the temperature and tell us :D

[MotesTV]

@hexyournightmare 22 degrees C

[ulfsinclair]

Nice work, what gas and what pressure do you use?

[barumman]

The Burner gas is Propane, Working gas is air. :)

[hrapu88]

Stirling engines working like peltier cells what has better efficiency ?

[barumman]

Sorry , no idea.

[Baeos]

@hrapu88 Stirling, by a mile. Peltier cells, even the best ones, are just awful, whereas stirling motors have the potential to be very efficient.

[bellovits444]

@hrapu88 peltier cells have lower efficiency but no moving parts and they also are "self started" in what the power generation concerns...

[qrrak]

HOLLY SHIT !!! I didnt know this

[jhunted7667]

you should experiment with a fensnel lense and try solar power

[barumman]

It would never run, in the Uk we rarely see the sun!!

[approtechie]

Very nice engine, and beautiful craftsmanship! Can you tell me why the engine didn't run when you stopped the motor/generator? Did it not have sufficient delta T yet? I know the Philips engineers used to demo their engines that way.

[STEVEDIGIBOYtv]

Looks like a hopped up ST5, very nice.

[PyroEvil]

Great engine !

Somebody can tell me what's the curved pipes surrounding the top of the head. Is just rods to keeping/conduct heat or tubes where gas pass through and go to the generator?

I see this on some stirling engine but not all of them .

[PyroEvil]

sorry ... regenerator ... not generator

[barumman]

These are heat exchanger tubes.

This arrangement is far more efficiant than a plain cylinder when the engine is pressurized.

[PyroEvil]

okay , that's was i expected. Thanks a lot for your answer.

[MotesTV]

@PyroEvil The steel loops are part of the piston, they are the hot expansion space. Check out the video watch?v=1QqUKFJHooo for a full understanding.

[MotesTV]

@PyroEvil Well, I guess in this example they are the cold compression space. Which brings me to a question, does it matter which way you run the engine when using it to cool?

[barumman]

Hi Carl, I havn't tried Helium,

I only ran the engine long enough to form frost as I was afraid of damaging the motor/generator.

Philips use the Stirling cycle for some of their cryocoolers I believe.

[Balldez]

What is the COP of this engine compared to a conventional heat pump.

[barumman]

No idea !

[carl95125]

Very cool demonstration! How cold did the heat exchanger get when running in reverse with water flowing in the cooling jacket? Have you tried using helium as a working fluid and could the stirling be used as a cryocooler?

Carl

[RedFathom]

don't think i have the skills to make something like this, but do you have any diagrams?

does that frosting effect happen to all stirling engines?

[barumman]

All Stirling engines will produce a small temperature differance but will only be noticeable in an engine that is fairly efficient with a high compression ratio.

Sorry no drawings, Best wishes Cyril

[IronGoober]

What exactly is a snifter valve. My impression is that it is a valve to equalize the mean engine pressure with the buffer space pressure...is this correct?

[barumman]

Hi ironGoober, On the downward stroke of the power piston the air in the crankcase is compressed, it is then passed through the one way valve(snifter)to the top of the piston therefore ensuring that the pressure in the working cylinder is always above that of the crankcase which will stop oil getting to and contaminating the regenerator, I HOPE!

Thanks for the interest.

[IronGoober]

I <3 barumman! ('s videos)

[electrique527]

Very interesting!

I hoped you would have it running as an engine... but that must wait until part 3 :)

Thanks for showing.

Richard