HOME | DD
PaxAeternum — Annular engine and Jet Type Condenser
#engine #steam #annular
Published: 2015-07-04 02:34:37 +0000 UTC; Views: 648; Favourites: 12; Downloads: 4
Redirect to original
Description
Annular engine designs mainly for the attention of HP ports for the cylinder are regrettably long and travel through the heads. This engine could be later redesigned with independent valves for the HP cylinder located on the heads. Good for slower RPM.THe Jet type condenser drawings are incomplete and display only the spraying head and condensing chamber.
Related content
Comments: 5
I marvel and curse my lack of comprehension.
👍: 0 ⏩: 0
That could be good for locomotives and traction engines. One thing I worry about, with annular compounds (you only recently made me aware of their existence to be frank) is the heat transfer between stages; after all one of the advantages of the compound from a modern point of view (not necessarily from the point of view from the time of their invention) is the reduction of temperature differentials within the cylinders, preventing the HP stage from cooling, which greatly lowers wall losses. In annular compounds it seems there would be a transfer of heat from the HP to the LP - now that I think of it it might be actually beneficial - the LP acting like a jacket for the HP cylinder.
As for the design itself, I like this, a lot. I like compact designs, this one just looks so much like a modern locomotive cylinder, quite nice.
👍: 0 ⏩: 1
Indeed you are right in that the LP acts as a steam jacket, and the HP lending some temperature to it may help prevent the condensation that usually happens within these cylinders! I would reccomend them better used on condenser systems, and I have yet to discuss with you my ideas for condensing locomotives after talking with Richard Niven, a South African engineer who served as a fireman aboard the 25C class condensing 4-8-4's and is a wealth of knowledge about them.
I am glad you like it so much, that is high praise! Also I have an alternate idea where instead of the LP and HP cylinders sharing a common crosshead, which would make for a tremendous amount of reciprocating mass to balance, we make 180 degree crank offset with seperate HP/LP crossheads and a split LP main rod, which will result in 180 phase difference between HP and LP. It will not perfectly counterbalance but it will of course be a lot smoother.
👍: 0 ⏩: 1
Would you ask him what pressure was usually present in those condensers? Or if vacumm was achievable? I have recently read the new book on those, but this data was not present there. I recommend the book none the less.
The offset I figured from the cranshaft drawings, it really makes a lot of sense, and it would allow for higher speeds. I have my own ideas on the concepts, we need to discuss it in depth.
👍: 0 ⏩: 1
I have just inquired, I await his response!
and yes indeed we do
👍: 0 ⏩: 0