An Application and Investigation of Rotating Heat Pipes on Motor Rotor Cooling

Author:

Cai Qingjun1,Chen Chung-Lung1,Dong Jimmy Q.2

Affiliation:

1. Rockwell Scientific Company

2. Rockwell Automation

Abstract

In some industrial AC motor applications, higher heat dissipation results in faster rotor losses than that can be accommodated with conventional shaft-mounted-fan cooling designs. In this paper, one of the heat pipe technologies - rotating heat pipe - is presented as a means of enhancing motor rotor cooling. Novel rotating heat pipes are designed to improve heat transfer performance at various rotational speeds. Preliminary experimental results indicate that this thermal solution can effectively improve motor rotor cooling. Further, the rotating heat pipes with internal wicks can reduce temperature gradients at low rotational speed.

Publisher

ASMEDC

Reference16 articles.

1. Daniels T. C. and Al-JumailyF. K., “Investigations of the Factors Affecting the Performance of a Rotating Heat Pipe,” Int. J. Heat mass Transfer, Vol. 18, pp. 961–973, 1975.

2. S. Maezawa, Y. Suzuki, and A. Tsuchida, “Heat Transfer Characteristics of Disk-Shaped Rotating, Wickless Heat Pipe,” Proc. 4th Int. Heat Pipe Conf., London, pp. 725–733.

3. L. J. Ballback, “The Operation of a Rotating, Wickless Heat Pipe,” M.S. Thesis, Naval Postgraduate School, Monterey, 1969.

4. Y. S. Luo and J. Chen, “Condensation Heat Transfer in a Rotating Heat Pipe,” Proc. 5th AIAA/ASME Joint Meeting, Seattle, 1990.

5. J. Chen and Y. S. Lou, “Investigation of the Evaporation Heat Transfer in the Rotating Heat Pipes,” Proc. 7th Int. Heat Pipe Conf., 1990.

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