SBBlue,
The StarRotor website shows data for the efficiency of a diesel engine as a function of load. You can find it at the following address: http://www.starrotor.com/3-slides/3-3-03.htm. This slide was pulled from the web; the original source is cited at the bottom.
When I cited the 20%...
Graviman,
It is more efficient to keep the compression as cool as possible because compression work is proportional to inlet temperature.
We do not design our engines using canned thermodynamic packages. I have a software package that gives the thermodynamic properties of gases as a...
SSBlue,
33% ain't bad for a part-load engine. The 40-50% efficiency is for a wide-open diesel. A part-load diesel engine is about 20% efficient.
If we find that the part-load StarRotor engine is insufficiently efficient, then we can always hybridize it for autmotive applications. We are...
Mackerm,
I learn something every day. This is the first I've heard of a claw compressor.
The efficiency, capacity, and pressure ratio is low for our application, but is surely is interesting.
StarRotorMan
Mart,
Thank you for your kind words and wishes.
Below, I have responded to your points.
Point 1: Water injection
Water injection improves the engine efficiency by maintaining near-isothermal conditions in the compressor, which lowers the parasitic shaft work that must be invested in the...
Mackerm,
Thanks for the website address for the cool animation of a dual rotating scroll compressor. It does eliminate the problem of slinging a mass in an orbiting manner, but it introduces another problem: getting high-pressure gas out of the scroll. This can only be done through the...
Terry,
There is no question that seals are our major challenge; however, we feel that we can meet that challenge.
Screw compressors have an even more complex geometry than the StarRotor geometry, yet they are able to achieve very high single-stage compression ratios (6:1 or better). Further...
Thanks for your questions. Here are the answers:
Question 1: Problems with StarRotor.com
Every computer that I have ever used responds to StarRotor.com and sends me to our homepage. Who can explain why computers do what they do? Certainly not this chemical engineer.
Question 2: Combined...
I am the president of StarRotor Corporation and have read with interest the comments in this forum. Because it is important that engineering opinions be based upon facts, I would like to clear up some issues.
Issue 1: The engine cannot work because the pressure at the compressor outlet and...
