Search found 10 matches

by Melvin C. Redfern
Tue Aug 28, 2018 8:59 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

Easy proof of concept, see if you can get two toy Stirlings to run off the same candle flame. Like the little ones they sell on amazon.
by Melvin C. Redfern
Tue Aug 28, 2018 8:50 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

The inresol Stirlings are supposed to make 5kwh each at 750°-900° c. The omega tube furnace will steadily heat a length of pipe 24 inches long at up to 980° c, while consuming 5.4kwh at maximum. The heated length of two inresol generators is only 20 inches. I have run a forge, I can heat a dozen pie...
by Melvin C. Redfern
Tue Aug 28, 2018 8:35 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

Found this cheaper tube furnace: https://www.omega.com/pptst/CRFC.html Looking at CRFC-112/120-C-A 500 watt, 120v No one has ever tried this before. Looking for 2 low rpm alternators, say 500 to 1000 Watts each. The hot ends of a Stirling engine will be plugged into the hole on either side for a tot...
by Melvin C. Redfern
Mon Aug 27, 2018 8:53 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

The Stirlings from inresol are $9,500 each, plain, going to try a cheaper mini version first. Will post upon the success or failure. Definitely want to see if filling furnace chamber with pure carbon dioxide will increase heat retention.
by Melvin C. Redfern
Mon Aug 27, 2018 8:39 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

https://www.omega.com/pptst/CRRS.html
Forced to backtrack on free lunch statement, the tube furnace only requires 5400 Watts to run at 900° celsius, plus it is right off the shelf. Looking at CRRS-1215/240-A.
by Melvin C. Redfern
Mon Aug 27, 2018 5:18 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

On a campfire, a lot of heat is wasted. I was talking to Omega engineering, and the idea now is, a 900° celsius pipe style furnace, inside diameter approximately 11 inches by 21 inches heated length. The V2-6 generators are only 5kwh apiece and the furnace requires 9 kwh, so only teasing out an extr...
by Melvin C. Redfern
Sun Aug 26, 2018 10:00 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

You can cook multiple hotdogs all at once in the same campfire. So what does that have to do with anything? Picture this, an electric furnace, perfectly square, say 2 feet by 2 feet. The inside space is heated to 1200° celseus, the electricity source running from the bottom, leaving five sides free....
by Melvin C. Redfern
Sat Aug 25, 2018 6:49 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

If it works, it would be a free lunch engine, not a perpetual motion machine
by Melvin C. Redfern
Sat Aug 25, 2018 6:46 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Re: Dual stirling generators electrically heated

Looking at taking two of these: https://www.inresol.se/products/inresol-v2-6 And sticking the hot ends into one of these: https://mhi-inc.com/PG3/robust-radiator.html#t-1 If the inresol can put out a combined power of 20 kwh and the electric pipe furnace only uses 12 kwh at 700° celseus over what is...
by Melvin C. Redfern
Wed Aug 22, 2018 5:14 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Dual stirling generators electrically heated
Replies: 16
Views: 11937

Dual stirling generators electrically heated

So, I am going to sandwich an electric heating element between the hot ends of two Stirling engines, each attached to a generator, one which powers the element. Anyone know any Kockum industries engineers? I am thinking of using a mechanical cooling system and was interested how the ones on Sweden's...