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  1. stevenz

    Steam Turbine shaft speed reference

    Thanks a lot! The mechanical governors is exactly the GE's flyweight type. I still have some thing not clear. When running the turbine off a barring to 3600 RPM, the following procedures may be followed: -0 to 1600 RPM in minutes -Warming period at 1600 RPM up to 60 mintues --etc Since the...
  2. stevenz

    Steam Turbine shaft speed reference

    I am trying to find out how the speed reference is set for an steam turbine system of a power plant. All the governors are of mechanical/Hydraulic type. Speed governor is a centrifugal one. I know that speed changer,or Speeder gear is adjusted for speed set point (reference). A motor drives the...
  3. stevenz

    spherical ball roation under roatating magnetic field

    I am considering to let a permanent magnet or just a stainless steel spherical ball to rotate just like a rotor.This ball will be put in the center of two pairs of horse shoe electromagnet coils which are feeded by alternative current to generate a roational magnetic field.I hope this ball will...
  4. stevenz

    can microwave be focused?

    Thks! I have another question,what is the minimum diameter of microwave beam that can be focused if a parabolic reflector (or other device for focusing microwave)is used ,say for 2.45GHZ microwave? Best Regards,
  5. stevenz

    can microwave be focused?

    I am considering to use focused microwave energy to heat ceramics materials?I don't want to put the ceramics in oven, instead i want to put it in open space.Is this idea possible. Tks,
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