Search found 265 matches

by fullofhotair
Fri Aug 23, 2013 3:30 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Water Cooling Designs
Replies: 37
Views: 17786

Re: Water Cooling Designs

I think for a thermosyphon to work best it needs a closed system. The hot water rises and enters the cooling system at the top. The cooled water becoming more dense settles to the bottom . Then drops down to the cold side of the engine to be reheated. Iam not positive but I believe a closed system u...
by fullofhotair
Fri Aug 23, 2013 1:47 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Water Cooling Designs
Replies: 37
Views: 17786

Re: Water Cooling Designs

http://youtu.be/2t5iJB4mSV0 http://www.youtube.com/watch?v=m4cSpevEVpo&feature=share&list=TLZ2XmYzlPcETCX3OJvbOm-VGcKjeBF3LS http://youtu.be/ZF0J8OvDSmM Hawke, I gave you 3 videos. The first is just a straight thermosyphon on a stirling engine. It has a small surface area and poor conductor....
by fullofhotair
Fri Aug 23, 2013 9:52 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: pulsed jet steam engine
Replies: 0
Views: 15384

pulsed jet steam engine

http://youtu.be/9rt1l-zmCug http://youtu.be/sIrpvMR_CLs http://www.newscientist.com/article/dn3321-steam-fires-underwater-jet-engine.html The putt putt boat is probably one of simplist heat engines with no moving parts. It can be made out of drinking straws and a pop can at its most basic. The engin...
by fullofhotair
Thu Aug 22, 2013 8:13 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Fire chamber vent tubes
Replies: 4
Views: 3524

Re: Fire chamber vent tubes

theropod2,
I really like that idea of using the vent pipe tube to run a small fan. That could cool a thermosyphon radiator to the cool side.
by fullofhotair
Thu Aug 22, 2013 6:21 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: what cycle does this engine use?
Replies: 21
Views: 24616

Re: what cycle does this engine use?

Bladeatilla, I know your trying to develope interest in the mason engine or mason engine hybrid. I believe it has alot of potential. Do you have any videos of any mason engine you could post? My dream is that you make a tutorial on the mason engine like you did on the free piston stirling. When I bu...
by fullofhotair
Thu Aug 22, 2013 5:54 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Heat Exchanger Design
Replies: 41
Views: 21833

Re: Heat Exchanger Design

Melting point of steel 2500f ,melting point of copper 1984f. An alloy is usually not as good a heat conductor as the pure metal . Stainless steel is an alloy. Tungsten 6000f melting point.and is a good heat conductor. Probably prohibitive due to cost. Old burn out light bulbs could be a cheap source.
by fullofhotair
Wed Aug 21, 2013 7:17 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: The Stirling Engine Air Conditioner/Refrigerator Question
Replies: 14
Views: 27586

Re: The Stirling Engine Air Conditioner/Refrigerator Questio

I agree the best way to use solar to cool is absorption chiller using amonia ,water and hydrogen. In those magazine articles by Vamoose ,at the top of the page is one on using a free piston stirling engine and a vapor compressor fixed to the top of it .Pretty neat setup.
by fullofhotair
Sun Aug 18, 2013 8:56 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Request Advice - Gamma Stirling
Replies: 17
Views: 9427

Re: Request Advice - Gamma Stirling

Hawke, A good alcohol burner is easily made out of a pop can. http://youtu.be/qj7PIhjPLxA You said you were thinking about a fan. You pretty much have what you need already. You have a flywheel just replace it for a small plastic fan blade off a dead fan. The fan now serves two purposes, flywheel an...
by fullofhotair
Sun Aug 18, 2013 4:47 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Understanding gamma engine
Replies: 5
Views: 4487

Re: Understanding gamma engine

Hawke, Everything you said sounds right to me. The displacer is just that. It displaces or moves the hot air up and the cold air down, Thats why you dont want it to fit tight in the cylinder.The displacer can also serve as a regenerator . Thats why some people make the displacer out of wrapped steel...
by fullofhotair
Sun Aug 18, 2013 4:29 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Life expectancy of Stirling Engines
Replies: 2
Views: 3175

Re: Life expectancy of Stirling Engines

Hawke' If you use a diaphragm, it will be be the first thing to go. Rubber gloves or balloons just cant take that much flexing. A good option is a bicycle inner tube, but that presents new problems. You cant just fold the inner tube over the displacer cylinder and secure it. It also has to be heat t...
by fullofhotair
Sun Aug 18, 2013 8:27 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: examples of closed brayton cycle piston engine?
Replies: 2
Views: 2471

examples of closed brayton cycle piston engine?

Iam trying to find an example of a closed system brayton cycle piston engine. The only example I found was difficult to read due to translation and the diagram wasnt complete. I know the early brayton engines were internal combustion but the cycle permits a closed externally heated system. Have any ...
by fullofhotair
Sat Aug 17, 2013 8:57 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: air leak due to displacer rod
Replies: 5
Views: 4640

Re: air leak due to displacer rod

You can put a thin film of vasoline on the con rod going through the hole. Dont get any on the the area around the hole. JB weld the hole. When it set up the con rod should release due to the vasoline.Wipe the little vasoline on the con rod off. Any kind of petrolum lubricant is bad in a stirling en...
by fullofhotair
Fri Aug 16, 2013 8:14 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: sinple, compact linear to rotary
Replies: 6
Views: 4896

Re: sinple, compact linear to rotary

Zhivko,
Thank you for your response.I do see the problem now. This should still work on a low rpm engine like an LTD or would the the lack of sinusidal motion still tear at the gears to much to make it efficient?
by fullofhotair
Wed Aug 14, 2013 11:37 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: colapible regenerator/displacer
Replies: 6
Views: 4268

Re: colapible regenerator/displacer

Bumpkin,thanks That was quite a read. If your still looking for a coating with good emissivity and absorbance, how about this. Electroplated black chrome. Its stable to 300c and anticorrosive. Chrome is pretty commonly used in electroplating. So Iam assuming sending out a piece or two to get black c...
by fullofhotair
Wed Aug 14, 2013 9:06 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: stacked pistons=hi compression
Replies: 3
Views: 2757

Re: stacked pistons=hi compression

If this doesn't make sense to you ,picture it this way. You have a gamma engine with a heavy power piston. Its cylinder is twice as long as usual. As you run it up to max rpms, it is still using half the cylinder. You magically, I don't how else to put it, disconnect the piston from the con rod, but...