Burgi Engineers LLC
Delivering unique solutions
for high performance rotating
machinery systems.
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Enhanced Liquid Cooling Advantage



Speed-Freq-18-EX2000
Oil‐Cooled‐Motor
Oil-Cooled-AC-Motor

Burgi Engineers is at the forefront of advanced liquid cooling of AC motors. Liquid cooled machinery delivers the following superior performance characteristics and is essential for your demanding applications.

  1. High power and High Speed: Speed dictates the size of rotating machinery. Mechanical stresses are greater at high speeds which drives high speed machinery into smaller packages. If power and speed requirements are high, then enhanced liquid cooling can be used to increase heat transfer efficiency and allow higher power density.
  2. Lower Inertia Capabilities: Designers specify low inertia when they want a responsive system. Low inertia dictates small rotor diameters for electric motors. For a given power rating, a smaller rotor will require enhanced heat transfer through liquid cooling.
  3. Smaller Size and Lower Weight: When the envelope for a machine is small, or weight constraints drive the machine size down, then a liquid cooled machine in a smaller frame size can be utilized.
  4. Low Noise: Liquid cooled machinery is much quieter. The cooling system can pump cooling fluid to the machine from a remote area, thus eliminating ambient noise pollution.
  5. More Reliable / Longer Life: Liquid cooled motors provide more reliable operation. This is due to, better lubrication, a reduction in operating temperature and reduction of temperature gradients in the motor. Temperature gradients result in differential expansion of components. This make it difficult to hold tight tolerances in the machine construction and can result in high component stresses and increase wear rates.
  6. Well Suited for High Ambient Temp and Contaminated Applications: Liquid cooling provides an alternative to air cooling in high contamination areas or areas with high ambient temperatures. Mining, atomizer systems, injection molding and machines housed in an enclosed space are excellent candidates for liquid cooling.
  7. Well Suited for Confined Area Applications: Hot air exits the machine in a typical air cooled system and is allowed to exhaust into the surrounding area. This is particularly undesirable in confined areas where additional ventilation may be required. The waste heat can be dissipated with a liquid cooled system by pumping the hot cooling fluid to a designated external area.
  8. Well Suited for Precision Applications: Process control standards are forcing facilities to control environmental temperatures. Liquid cooling provides superior temperature control to arrest thermal growth problems, control performance variations, and control ambient temperatures in sensitive processes.