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  1. StarRotorMan

    The Star Rotor motor

    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%...
  2. StarRotorMan

    The Star Rotor motor

    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...
  3. StarRotorMan

    The Star Rotor motor

    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...
  4. StarRotorMan

    The Star Rotor motor

    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
  5. StarRotorMan

    The Star Rotor motor

    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...
  6. StarRotorMan

    The Star Rotor motor

    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...
  7. StarRotorMan

    The Star Rotor motor

    Graviman, Thanks for your kind words. We are always open to suggestions and ideas, so please let me know when you get a chance. StarRotorMan
  8. StarRotorMan

    The Star Rotor motor

    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...
  9. StarRotorMan

    The Star Rotor motor

    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...
  10. StarRotorMan

    The Star Rotor motor

    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...

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