Search found 3318 matches
- Thu Jan 16, 2020 7:38 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's "Ambient Heat Engine" Experiment
- Replies: 175
- Views: 187482
Re: Tesla's "Ambient Heat Engine" Experiment
I picked up some supplies today in order to have another go at it. I found a nice clear plastic canister/lazy Susan sort of thing for the engine body. The plastic should not conduct so much heat away, before it has a chance to do anything. I found some more rigid displacer body material that should ...
- Thu Jan 16, 2020 5:50 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's "Ambient Heat Engine" Experiment
- Replies: 175
- Views: 187482
Re: Tesla's "Ambient Heat Engine" Experiment
This first attempt is far from ideal in just about every way possible, but it was cheap and easy to put together. No parts needed machining anyway. The engine body conducts too much heat. The floppy styrofoam displacers were too thin, and, well, floppy. The connecting rods were too flexible, bendy a...
- Thu Jan 16, 2020 5:20 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Vuilleumier two displacer engine (heat pump)
- Replies: 3
- Views: 8244
Re: Vuilleumier two displacer engine (heat pump)
I've been having some difficulty with engineering the connecting rods and trying to keep things balanced. Having designed an LTD style version, to keep the displacers centered and balanced I decided to have one connecting rod slide inside the other. Both would slide through a sleve. I found copper a...
- Thu Jan 16, 2020 6:43 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: My first post. Advice needed.
- Replies: 38
- Views: 41137
Re: My first post. Advice needed.
Hi Wellington. . I think this form of cogeneration is one of very few truly useful areas to invest Stirling development. Check out the electronic competition of Thermal Electric Generators first though. Cheap TEGs are becoming more available and may be getting to the point of making all of this muc...
- Wed Jan 15, 2020 8:45 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Counterbalancing displacers
- Replies: 8
- Views: 31063
Re: Counterbalancing displacers
Doesn't it add an awful lot of friction to have the two displacer rods running inside each other? Yes, that was a problem. Particularly because they are thin, soft metal (brass and copper) and tend to bend buckle and bind easily. But that was all that was available at the local hardware. It did wor...
- Wed Jan 15, 2020 8:28 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Counterbalancing displacers
- Replies: 8
- Views: 31063
Re: Counterbalancing displacers
Thanks. That didn't happen this time though. Back to the drawing board.thanh-cuibap wrote: ↑Sun Jan 12, 2020 7:26 pm I will learn more about them when I have time
And hope you succeed with your ideas!
- Wed Jan 15, 2020 5:28 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's "Ambient Heat Engine" Experiment
- Replies: 175
- Views: 187482
Re: Tesla's "Ambient Heat Engine" Experiment
No, the displacers did not fall off.
- Wed Jan 15, 2020 5:22 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's "Ambient Heat Engine" Experiment
- Replies: 175
- Views: 187482
Re: Tesla's "Ambient Heat Engine" Experiment
IMG_20200115_113056910_resize_30.jpg Well, I got something put together finally IMG_20200115_113045571_resize_2.jpg Haven't. Been able to get it to run though. Not even with bags full of scalding hot water from the tea kettle on top and ice below. I've exhausted all the simple possibilities as far ...
- Sun Jan 12, 2020 6:31 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Counterbalancing displacers
- Replies: 8
- Views: 31063
Re: Counterbalancing displacers
As things progressed, I started trying to mount support brackets and such on the lid of the cookie tin, however it was still far too weak and prone to buckling and bending so I had to add more cross bracing. I ended up going with the seesaw method of counterbalancing as it seemed the displacers real...
- Sun Jan 12, 2020 10:16 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Counterbalancing displacers
- Replies: 8
- Views: 31063
Re: Counterbalancing displacers
I think, just my opinion: TWO DISPLACER will change the principle of stirling motor. Displacer has the effect of moving air from the hot zone to the cold zone and contrary,. Why don't you reduce the weight of displacer? There are many, many different Stirling displacer arrangements. These are regen...
- Sun Jan 12, 2020 3:57 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Counterbalancing displacers
- Replies: 8
- Views: 31063
Re: Counterbalancing displacers
Ok, it just came to me. A pulley system. Like an elevator with a counterbalance. It takes the weight off and lifts straight up, so won't create any friction from lifting in an arch like my initial seesaw arangement. Well, actually the rope and pulley themselves add some friction, but I think that wo...
- Sat Jan 11, 2020 12:59 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: large lamina flow build
- Replies: 139
- Views: 160659
Re: large lamina flow build
the inner tube is open on the hot end. The pointed end is just pointed for airflow purposes. the point is basically hollow. I wont be sharing the new design, I have too much time invested to just give it away. After so many here contributed. Gave away all their ideas and experience to help you. Som...
- Fri Jan 10, 2020 6:23 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Vuilleumier two displacer engine (heat pump)
- Replies: 3
- Views: 8244
Re: Vuilleumier two displacer engine (heat pump)
The full patent for the Vuilleumier "METHOD AND APPARATUS FOR INDUCING HEAT CHANGES" from the US patent office can be viewed or downloaded here: https://pdfpiw.uspto.gov/.piw?PageNum=0&docid=01275507&IDKey=91E286F9F878%0D%0A&HomeUrl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-...
- Fri Jan 10, 2020 12:46 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Vuilleumier two displacer engine (heat pump)
- Replies: 3
- Views: 8244
Vuilleumier two displacer engine (heat pump)
The Vuilleumier device is very similar to a Stirling engine, or Stirling cooler, except that it has two regenerative displacers. Like a Stirling it has a hot end and a cold end but it is different in that it takes in heat or absorbs heat from BOTH the hot end, as well as the cold end. So while it ru...
- Fri Jan 10, 2020 12:18 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Counterbalancing displacers
- Replies: 8
- Views: 31063
Counterbalancing displacers
I have a slight issue or problem to work out with the experimental TWO DISPLACER engine I'm experimenting with. I want to try and at least ensure that it will run on a cold sink (ice rather than applied heat) and have every advantage I can give it. To that end, I thought counterbalancing the displac...