Industrial Heater FWE Type II and Type III
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Industrial Heater FWE Type II and Type III
Finally ...
My client has gotten the latest version running, after much struggling through the winter months with poor propane pressure due to unusually cold weather. The engine shown here is called the Type II engine. The client requested a re-design to enlarge the combustion chamber for higher power, comprising a 6-inch long cylindrical extension at the front of the main chamber cone. This necessitated moving the intake forward a few inches and lengthening the tailpipe somewhat. But, hey - it runs. That is the Type III engine, which I don't have photos of (since the client did the mod in his own shop). They say it is plenty loud, and they haven't even fed it all the propane it will take.
The Type II engine and its stainless mounting dingbats were all welded up by Matt Russell of Jim Russell Design in Des Moines, Iowa USA; all design is mine. This re-design and re-build cost me right around $2500 US. It is a far nicer engine than the Type I engine I posted earlier. The only rigid mounting point is at the rear of the chamber. The front mounting ring moves effortlessly back and forth to accommodate thermal expansion while maintaining centerline and carrying half the chamber weight. The rear mount point is two rings with guides that allow the tailpipe to slide for thermal expansion; it supports almost the entire tailpipe weight at roughly the midpoint of the pipe, on a 1/2-inch stainless all-thread screw jack to allow adjustment for perfect alignment. (The engine splits at the juncture of the chamber and tailpipe, with a stainless O-ring pinched between the clamped flanges.)
I'll provide more detail photos later.
L Cottrill
My client has gotten the latest version running, after much struggling through the winter months with poor propane pressure due to unusually cold weather. The engine shown here is called the Type II engine. The client requested a re-design to enlarge the combustion chamber for higher power, comprising a 6-inch long cylindrical extension at the front of the main chamber cone. This necessitated moving the intake forward a few inches and lengthening the tailpipe somewhat. But, hey - it runs. That is the Type III engine, which I don't have photos of (since the client did the mod in his own shop). They say it is plenty loud, and they haven't even fed it all the propane it will take.
The Type II engine and its stainless mounting dingbats were all welded up by Matt Russell of Jim Russell Design in Des Moines, Iowa USA; all design is mine. This re-design and re-build cost me right around $2500 US. It is a far nicer engine than the Type I engine I posted earlier. The only rigid mounting point is at the rear of the chamber. The front mounting ring moves effortlessly back and forth to accommodate thermal expansion while maintaining centerline and carrying half the chamber weight. The rear mount point is two rings with guides that allow the tailpipe to slide for thermal expansion; it supports almost the entire tailpipe weight at roughly the midpoint of the pipe, on a 1/2-inch stainless all-thread screw jack to allow adjustment for perfect alignment. (The engine splits at the juncture of the chamber and tailpipe, with a stainless O-ring pinched between the clamped flanges.)
I'll provide more detail photos later.
L Cottrill
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Mounting Rail & Mounts
Some photos of the mounting rail and mountings. The rail is a 4 x 4 inch mild steel tube, with holes CDC cut for me by a fine outfit called DeeZee Manufacturing. Precise lengths of steel bushing stock were then welded through the holes. All the stainless mounting assemblies were welded up for me (TIG) by Matt Russell of Jim Russell Design. I cut and ground most of the parts, all out of 3/4-inch square stainless tubing, in Jim's well-equipped shop.
L Cottrill
L Cottrill
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Re: Industrial Heater FWE Type II and Type III
Awesome stuff!
Re: Industrial Heater FWE Type II and Type III
Nice work Larry,
Are you able to disclose what the application is?
Are you able to disclose what the application is?
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Re: Industrial Heater FWE Type II and Type III
Thank you, sir! This is undoubtedly the most real design work I've ever done on a pulsejet. Of course, only time and testing will tell whether the heat warpage problem is really conquered. We'll see.Jutte wrote:Awesome stuff!
No - not until the client has his patent published in the Digest. Someday ... someday ...PyroJoe wrote:Nice work Larry,
Are you able to disclose what the application is?
L Cottrill
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Re: Industrial Heater FWE Type II and Type III
Hi Larry
looking good my friend, wish you the best of luck with it,
Viv
looking good my friend, wish you the best of luck with it,
Viv
"Sometimes the lies you tell are less frightening than the loneliness you might feel if you stopped telling them" Brock Clarke
Viv's blog
Monsieur le commentaire
Viv's blog
Monsieur le commentaire
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FIRE IN THE PIPE! Type III Heater Now Operational
Thanks, Viv!
Just got a call from the client early afternoon. It sounded like the noise was tearing his cell phone to shreds. Then he shielded the phone and yelled that he was standing 35 or 40 feet from it. He seemed to be pleased, for the moment. This is the Type III, of course.
I'll see if I can get him to cajole his wife into getting us another movie for YouTube.
L Cottrill
Just got a call from the client early afternoon. It sounded like the noise was tearing his cell phone to shreds. Then he shielded the phone and yelled that he was standing 35 or 40 feet from it. He seemed to be pleased, for the moment. This is the Type III, of course.
I'll see if I can get him to cajole his wife into getting us another movie for YouTube.
L Cottrill
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Industrial Heater FWE Evolution
Here's a little "almost to scale" sketch I did comparing the three engine models. These are very simple sketches; I have ignored minor variations in the tailpipe length and left out many mounting details. On Models II and III, the intake would normally be on the far side of the chamber, but I show it rotated up to the top for clarity. Note how the intake was moved forward significantly and shortened a little on the Model III engine. The engine is not as "front loaded" as it may appear (especially in the Model II form) because of the large front dome.
The client is sending me a DVD of the latest video he shot. I'll probably edit it some, then submit it to YouTube.
L Cottrill
The client is sending me a DVD of the latest video he shot. I'll probably edit it some, then submit it to YouTube.
L Cottrill