Hello I'm new to the group, I'd been researching about stirling engines for half a year. In the last weeks, I started to study the basic thermodynamics...
SESUSA, I've noticed conflicting issues in the different simplistic HX (Heat Exchange) models I've tossed around. The simplest model of HX is that its...
I agree that in the design of a heat exchanger for a Stirling machine that it is important to consider the heat transfer area and the pumping loss. If these...
Twice the channels doesn't give half the pressure drop. It gives .707 times the pressure drop, assuming that you are in the same fully turbulent flow regime....
Guys, Thank you for your replies. In the beginning of chapter 5 of Hargreaves, he writes: "Under certain circumstances it is possible with this arrangement to ...
maniacal engineer, all, Is your analysis disclosed or proprietary? Perhaps you could add the analysis' that you might have to the files section, so some of us...
I think you may have taken the simplistic beyond the edge of reality (i.e. the Beale equation is simple but inaccurate). The channels page is a conversion from...
I think you may have taken the simplistic beyond the edge of reality (i.e. the Beale equation is simple but inaccurate). The channels page is a conversion from...
I give the equations in post 7092 as: ******************************************* Because that is what the math says. L/N = D^4 *(pi*rho*dP*Gc/(128* mdot*myu))...
Hi Well I've been designing a beta stirling engine, taking lots of ideal considarations. The drawings are wating the approval form the moderator. The album is...
Hi Alex, Sorry no one responded to your first message. I forgot about it. Are you working in mks units? Meters, kilograms, seconds? I'm a Matlab user. I'm...
Tom, all, I studied the "Tube_chan" page in GCS. IMHO, "Slot_chan" would be a more descriptive name. The "Width/Depth" heading is mislabeled, it should be...
MP, I agree with your assesment. Tom ... be "Depth/Width". ... definition ... simply ... the ... design. ... in ... generally ... HX. ... stacks. ... ...
Tom, list, One can actually take this much further. The D/W ratio is not independent of the other design parameters, so I think it makes more sense to...
Ummmm.......... not quite. The rh is taken from the calculation done by the GCS. rh is one of the ratios scaled from the prototype and the resulting value...
maniacal_engineer, all, In some of the engine simulations I ran, the Reynolds number is a few thousand in the cooler and heater heat exchangers. This is in...
Tom, list, Who said anything about Calculus? Not me. I can see that when converting from tubes to slots, it works well to match the hydraulic radius, and...
Hi Aelx I hope it Does Work Pro./J.zarinchang ... From: alex <alexplace2001@...> To: sesusa@yahoogroups.com Sent: Friday, September 28, 2007 2:29:58 AM ...
Alex, If I am reading your parameters correctly, you only have 123 Celsius for your delta T (temperature). That doesn't appear to be nearly high enough given...
A potential source of rigid plastic to make an LTD Displacer Cylinder is to be found in the housewares/kitchenwares section of department stores and the large...
Hello I was wondering if a rotary stirling engine would be more efficient than traditional reciprocating configurations. It is posible to build a rotary power...
Alex, Scaling up any external combustion engine has complications inherent to geometry. The internal volume grows faster than the surface area needed for heat...
Alex, Rick: A dual chamber version of the emachine shop rotary Stirling engine is shown at <http://www.rotarystirlingengines.com/birotor.htm> The single piston...
http://www.wipo.int/pctdb/en/wo.jsp?wo=2003069130 It appears to me that preheating the incoming working gas would be counterproductive...? -- Tobias Gogolin ...
First of all it is not Stirling regenerator. It is a counter flow heat exchanger with two separate flow paths generally called a recouperator. But on the...
... Kudos Tom! Nearly every SE dreamer has hatched a similar scheme at one time or another, but none has ever worked due to 'regulation issues' (inability to...
I guess a possible problem with the type of scroll expander/ compressor is that it usually works at expansion factors around 3, and that would translate into a...
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