What is it?

[JOHNBOY]

The main reason I developed this is for that reason. Typical misting strategy is to spray single nozzle coarse mist, across the conduit. That just agglomerates and turns into a stream on the opposite wall of the conduit, a river that kills the leading edge of the blades.
This is 8 smaller nozzles, much smaller droplet size, airstream entrained fog, which will not hurt the blades.

This design has been 2 years in the making. The original was a single nozzle located in front of the compressor. This evolved a lot. The latest challenge was making it un-restrictive to 1000 cfm airflow on CFD analysis.

The tractor puller I know that tried the pre turbo was not run of the mill 150 - 200 psi. This tractor uses engine driven 1000psi set up. He has nozzles in the heads for each cylinder. He also put a nozzle .015 (IIRC) 4" in front of the turbo comp wheel. On the dyno it gained power just switching from the 6 in the heads to the 6 in the heads plus the pre turbo. A good bit of HP to. But he decided to remove the pre turbo after seeing what it did to the wheel. He was worried that Turbonectics would not honor their warranty of that turbo if he hurt it later. Their warranty does not cover FOD which water is considered.

Think about this. Say you have a turbo with a 2.5 inducer comp wheel. If it is spinning at 100,000rpm which are turbos are capable of. At the outer edge of the inducer diameter the surface is traveling a 65445 feet per min (744mph)! At that speed anything it hits is far from soft. If there is any fog it will not be soft.

Not trying to flame you Michael. Just sharing what I know and have seen.

 

[Killerbee]

Absolutely, and I agree with you, and your calculations. Mach is typical in these applications.

A mist droplet has, typically 50-100 times the mass of a fog droplet. This mass gives it inertial momentum also. You point out, correctly, that water drops are very heavy to the compressor tip. This observation, in combination with the usual observation that this mist forms a river on the conduit wall, results in blade damage...no question. It is often the result of application error.

Notwithstanding your detailed description, Axial formation of fog usually does not usually have these issues. It does not agglomerate on surfaces and is ingested very evenly by comparison, instead of running in a liquid stream down the wall, and into the fastest part of the blade.

GE runs this exact settup of thousand of power generating CT's 24/7, for 1000's of ours before appreciable erosion is observed. You would be lucky to accrue 2-10 hours.

I would love to see more on his settup, and the .015 nozzle. Thanks for the feedback. Perhaps he should move it closer. Just a thought.

I will be looking out for this as well...fwiw, compressor impingement damage is not fatal, and compressor wheels are relatively inexpensive, and easily changed out IIRC.

 

[JOHNBOY]

Well I am very interested in how things work out to say the least. The owner of that tractor would love to spray pre turbo water if it can be kept form damaging a 2.5k turbo. May he sould try a smaller nozzle like an .008 from http://cloudtops.com/fog_nozzles.htm

 

[Killerbee]

yes, at 1000 psi, those nozzles would have a smaller Sauter Mean Diameter. Of course he would need more of them. I really think this is something he should consider. I could spec it for any application.

 

[Killerbee]

Latest LBZ/LMM version

High Power Beta Testers will be needed.

 

[Killerbee]

no takers?

 

[Rhall]

So this would have to be ran with that intake? Or something custom made?

 

[slowlmm]

how much

 

[Rhall]

Nevermind, i see that intake is for an lly, so looks like a custom intake would have to be fabbed up, easy enough

 

[Killerbee]

Price is not determined, this one is spec'd to fit an LLY (with IOH kit), LBZ, LMM, with no restriction.

I can machine for any application, but a one-off is $1000. Production will be less than half. I will BETA 5 of these. I'll be eating most of the proto cost.

 

[slowlmm]

i would like to try one for a Lmm

 

[Rhall]

Sooo, how high hp levels are you looking for?:hug:

 

[Killerbee]

Based on model predictions only, that is a big variable. 25Hp (water only) to 140 HP (WMI and nitrous). But these are pretty sketchy guesses.

Also looking at full time economy improvement application.

 

[Rhall]

I would like to try one out, i could do the high performance apps, but i couldnt do mileage as i dont drive my truck during the week.

 

[Killerbee]

 

[Turbotug]

Purdy.

 

[jpgmtech]

Any takers yet KB?

 

[custom8726]

Well, if you are really desperate I suppose I could Demo one for ya

 

[juddski88]

for the economy tester...what are your requirements? I have a 2.5 class puller that I drive everyday and until i hit the dyno in October, i can only speculate around 600 RWHP. I do not have a kit installed yet but I was planning on it for the winter.

 

[DuramaxPowered]

I'm VERY interested in one for my LMM.....Please send me a PM with info on getting one.