Stirling with Rotary Annular Trilobic Pistons (SPRATL)

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
User avatar
Pascal HA PHAM
Grand Econologue
Grand Econologue
posts: 1461
Registration: 30/01/06, 14:56
Location: sun
x 25

pallet stirling




by Pascal HA PHAM » 11/03/10, 06:53

Hello everyone,

I think I understand that Tomsid has imagined a STIRLING "double paddle module" and wishes our opinion ....

WELL :

I am not a specialist in STIRLING machines but I think that during the volumetry cycle, the smaller the minimum volumes (or even zero) the better: it is CARNOT which imposes its laws?

What do you think Robert SYCOMOREEN ....

"and for Tomsid: if you are english ... write in english, you are on an international forum between the CANADA and the CHINA "


A+
: Cheesy:

Pascal HA PHAM
0 x
All around my work, full videos on the web:
https://www.google.fr/webhp?source=sear ... 80&bih=672
User avatar
Remundo
Moderator
Moderator
posts: 16160
Registration: 15/10/07, 16:05
Location: Clermont Ferrand
x 5259




by Remundo » 11/03/10, 11:59

Hi Pascal, Hi Tomsid,

I don't know your country and your language, I don't understand well your question (as there was no question :D ), altough I've well seen your picture.

It would be a hot air engine ...

There is no problem to speak in English.

Read you soon, bye!
0 x
Image
tomsid
I learn econologic
I learn econologic
posts: 45
Registration: 09/03/10, 19:46




by tomsid » 11/03/10, 13:41

Hi
I have trouble navigating this list as i do not read any french, sorry.

The picture represents my current thinking on rotary stirling engines
Hear two vane rotors are connected by regenorators in the rotating hub. This gives a four alpha stirling configuration. the connections between sectors need to be established for this to work properly.

To increse the amount of heat that can be transferreded to a sprayed liquid would be used. The heat transfer in a stirling is proportional to the surface area. incresing the size of the engine gives gas volume cubed and surface area squared. this means small engine are usualy more efficient. With liquid spray this means any size engine will have the same efficency.

This form of rotary stirling is diffrent from SPRATL in that the regenorators are conventional forward / reverse flow instead of the HX tubes you use.

I thought you would like to see a conventional representation of rotary stirlings.

hope this is of interest
yours tomsid

[quote = "Remundo"] Hi Pascal, Hi Tomsid,

I don't know your country and your language, I don't understand well your question (as there was no question: D), altough I've well seen your picture.

It would be a hot air engine ...

There is no problem to speak in English.

Read you soon, bye! [/ Quote]
0 x
User avatar
Remundo
Moderator
Moderator
posts: 16160
Registration: 15/10/07, 16:05
Location: Clermont Ferrand
x 5259




by Remundo » 11/03/10, 15:16

Hi Tomsid,

Thanks for your message, I post again your principle of working for the engine
Image
to better see it on this page ...
0 x
Image
User avatar
Remundo
Moderator
Moderator
posts: 16160
Registration: 15/10/07, 16:05
Location: Clermont Ferrand
x 5259




by Remundo » 11/03/10, 15:23

Hear two vane rotors are connected by regenorators in the rotating hub. This gives a four alpha stirling configuration. the connections between sectors need to be established for this to work properly.

Yes, the drawing should be specified for the connections.
To increse the amount of heat that can be transferreded to a sprayed liquid would be used. The heat transfer in a stirling is proportional to the surface area. incresing the size of the engine gives gas volume cubed and surface area squared. this means small engine are usualy more efficient. With liquid spray this means any size engine will have the same efficency.

Exactly, I add that for the hot side, one has to insulate it because there are thermal losses by conduction and radiation.
This form of rotary stirling is diffrent from SPRATL in that the regenorators are conventional forward / reverse flow instead of the HX tubes you use.

Right, you've well thought about it. I think that continuous and unidirectionnal flowing is better. It makes a nearly perfect thermal exchanger, and thus a very good regenerator.
I thought you would like to see a conventional representation of rotary stirlings.

Thanks, indeed there are not a lot of rotary Stirling engines. This one with rotary blades is interesting.

Bye!
0 x
Image
User avatar
Pascal HA PHAM
Grand Econologue
Grand Econologue
posts: 1461
Registration: 30/01/06, 14:56
Location: sun
x 25

ZZ machines in STIRLING




by Pascal HA PHAM » 28/07/10, 07:58

Hello Raymond,

I browsed your SYCOMOREEN site and you talk about SPRATL again: thank you, that's good!

But hey hey ....: "the new concept ZZ" in STIRLING fashion especially the ZZ 1 C and ZZ 2 ... that would be great right?

Imagine a thermo dynazmic set within which the 3 D sphero-kinematic concept of the ZZ merges with the thermo dynamic concept of our dear Scottish pastor Robert STIRLING ..... this would give birth to amazing rotary machines unique in the world, a must of technology right?

Image

A+

Pascal
0 x
All around my work, full videos on the web:

https://www.google.fr/webhp?source=sear ... 80&bih=672
User avatar
Remundo
Moderator
Moderator
posts: 16160
Registration: 15/10/07, 16:05
Location: Clermont Ferrand
x 5259




by Remundo » 02/08/10, 09:45

Hi Pascal,

indeed, the ZZ are adaptable in Stirling ... There are reflections to lead ... everywhere : Idea:

@+
0 x
Image
User avatar
Remundo
Moderator
Moderator
posts: 16160
Registration: 15/10/07, 16:05
Location: Clermont Ferrand
x 5259




by Remundo » 31/08/10, 13:38

Hello Econologists,

Back to school, Sycomoreen invites you to visit the SPRATL FAQ which has been updated significantly ...
Image

You will discover the SPRATL: Stirling by Sycomoreen, Its areas of application et the history of the SPRATL concept

Good views! 8)
0 x
Image
User avatar
Pascal HA PHAM
Grand Econologue
Grand Econologue
posts: 1461
Registration: 30/01/06, 14:56
Location: sun
x 25

Here we are: January 7!




by Pascal HA PHAM » 07/01/11, 11:19

hello: Happy RAYMOND Celebration!

Image

with the question for a champion:
Do you think that the successful concept of TTVR by Jean Claude could be taken "cinematically" for an adaptation of the functioning in STIRLING mode?
Ha?

Image

A+

pascal
0 x
All around my work, full videos on the web:

https://www.google.fr/webhp?source=sear ... 80&bih=672

 


  • Similar topics
    Replies
    views
    Last message

Back to "hydraulic, wind, geothermal, marine energy, biogas ..."

Who is online ?

Users browsing this forum : No registered users and 181 guests