Compound Turbocharging as Gas Turbine

[nersut]

Hi everyone

Does anyone know if it is possible join to turbochargers as in compound turbocharging (not as twin turbocharging) to run as gas Turbine?



Pros & Cons?

I was thinking the second turbo would act as a 2nd stage compressor/turbine to increase the P2 pressure & T2 inlet temperature = More efficient gas turbine?

Please comment.


Cheers
Erik

[racket]

Hi Erik

Its possible , but it won't increase power output a huge amount , but it will improve the fuel burn rate per horsepower output (lower SFC )

A lot of complication to get the right mix of components though , not a build to be attempted without deep pockets as it'll get expensive .

Cheers
John

[nersut]

Hi John

Thank you for your super informative replies.
I was daydreaming about compound turbocharged gas turbine setup. ;D
I have these turbochargers available:

• MHI TD05-3 (from a Mitsubishi 3.9L diesel engine @ 145 hp)
  
• Garrett T04E10 (from a Volvo 6.7L diesel engine @ 200 hp)
  
• Garrett TA5101 (from a Volvo 12.0L diesel engine @ 330 hp)
  

Theoretically a good combination between those turbos?
Theoretical thrust or shaft power ratings???


Cheers
Erik

[ernie wrenn]

Chris

Tell him about Rick's Twin supercharged Pro Mod...... WAY to much trouble..

ernie

[racket]

Hi Erik

The pressure/density going into the low pressure ( LP) turbine wheel is going to be a lot higher than normal , this requires an "undersized" wheel that isn't always available for the compressor wheel its attached to .

Also there's the complications associated with interstage intercooling between comps and how it will affect densities of the air being ingested into the HP comp , the problems aren't insurmountable but for us DIY'ers its not worth all the troubles , its easier to use a single bigger turbo if we want more power .

There have been attempts by guys to make a 2 stage engine, but at best, the results have only been barely satisfactory , the engines have run but not producing to their potential .

As for thrust expectations from using your big turbo in a 2 stage scenario , maybe 20% more thrust , but perhaps 30% more horsepower .

Cheers
John

[nersut]

Hi John & Ernie

It sounds like alot of work for only 20-30 % more power...

I just hope my new FJK-2 makes good power then. ;D


Cheers
Erik