Search found 228 matches

by Trevor
Mon Aug 27, 2018 10:55 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11867

Re: Dual stirling generators electrically heated

Good one Melvin - Keep the fingers crossed
Trev
by Trevor
Mon Aug 27, 2018 4:22 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11867

Re: Dual stirling generators electrically heated

From a heat source with Sterling engines recovery is at most 35% - Very good efficiency compared to other motors.
What you are saying is fine, but all that heat is wasted - check out the other threads in this forum and you will understand.
Maybe some one from this forum can answer better than me.
Trev
by Trevor
Sat Aug 25, 2018 11:01 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11867

Re: Dual stirling generators electrically heated

Impressive Engines - I am not sure of the electrical robust radiator running both engines to produce 20kW. It would mean you are getting more energy out than what is going in. If you accomplish this you will go into the history books. Give it a go and I wish you the best - There will be a lot of sur...
by Trevor
Thu Aug 23, 2018 2:40 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11867

Re: Dual stirling generators electrically heated

Hi Melvin
Not sure what you want to do will work. If both engines are the same size and one is a heater for both, you will be trying to do the "Holy Grail", that is a perpetual motion machine. Physics show this cannot be done if you want the same power output to boyh.
Trev
by Trevor
Sun Jun 10, 2018 1:12 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: the volume ratio between displacer cylinder and power cylinder
Replies: 4
Views: 5583

Re: the volume ratio between displacer cylinder and power cylinder

Hello OscarmikeIan
Ian is correct with the ratios 1.5:1 for Stirling Engines. It is the optimal ratio that has been tested for a very long time.
When using LTD Engines then this will be different.
You cannot have a larger piston capacity that the displacer as the engine will not work at all
Trev
by Trevor
Sat Mar 17, 2018 12:50 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Bekaert regenerator material
Replies: 9
Views: 5861

Re: Bekaert regenerator material

Looks very interesting. I would think this would be good for LTD engines if the product is lightweight.
Nice find Blaf - Trev
by Trevor
Mon Feb 26, 2018 2:35 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Propane burner design
Replies: 7
Views: 6233

Re: Propane burner design

Hi Ian - In the winter time you could possibly wrap a few coils of tubing around the hot end to make the cold frozen gas into a liquid for full firing.
Trev
by Trevor
Thu Feb 15, 2018 8:58 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: New flame eater with homemade gear
Replies: 8
Views: 6861

Re: New flame eater with homemade gear

Hi Thanh
Oh! What a nice engine mate. I like the work you did on the fuel tank and the gearing for the generator.
Well done, I love it
Trev
by Trevor
Sat Feb 03, 2018 5:41 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: What fastener to use on Hot Cylinder?
Replies: 2
Views: 3241

Re: What fastener to use on Hot Cylinder?

I would use high temp silicon (red). It comes in a handy tube and you can purchase from any bearing, engineering or even Bunnings stores.
Glass does not transmit heat readily so the adhesive will wok here quite well.
Trevor
by Trevor
Thu Jan 18, 2018 4:46 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Book about striking engine design
Replies: 18
Views: 16848

Re: Book about striking engine design

Thanks Greg - I just downloaded this digital version.
Ripper mate as I have been trying to get a copy of this for some time.
Trev
by Trevor
Thu Jan 18, 2018 3:06 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Horse power figures of some historic engines
Replies: 3
Views: 5838

Re: Horse power figures of some historic engines

Good info Alfista. They were sure were heavy when they only used cast iron.
Todat with alloys and special metals weight to HP will be quite different.
Trev
by Trevor
Thu Jan 18, 2018 2:58 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Heavy or lightweight displaser for more horsepower?
Replies: 5
Views: 7142

Re: Heavy or lightweight displaser for more horsepower?

Hi Wellington
A displacer that is extra light weight is very beneficial. Make it light as possible yet sturdy and do not use aluminium as the displacer as in high heat they will melt or distort badly. Ian can show you some photos of what can happen using alloy as a displacer.
Trev
by Trevor
Tue Dec 12, 2017 2:43 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling powered toy car
Replies: 6
Views: 6015

Re: Stirling powered toy car

HI Ian
I have tried to get 3 and 4mm in heat fused plastic belting (polyurethane I think) but with no luck in Australia.
Do you happen to know where it can be purchased, even on Ebay it is hard to find and expensive.
Maybe others are having trouble trying to find the stuff.
Regards Trev
by Trevor
Sat Dec 09, 2017 4:06 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling powered toy car
Replies: 6
Views: 6015

Re: Stirling powered toy car

I also have used rubber bands to drive my water pumps on my hot air engines. I have recently found some soft rubber that is used for sealing drums etc. Comes in 4mm up to 12mm. You glue it with super glues and it doesn't let go even when going around 20mm diameter pulleys under load. Better than usi...
by Trevor
Sun Oct 29, 2017 1:26 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: First Sterling Finally Running
Replies: 24
Views: 16422

Re: First Sterling Finally Running

By God! It's beautiful