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Journal of Dairy Science Vol. 76 No. 8 2195-2203
© 1993 by American Dairy Science Association ®
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Milking System Dynamics. 1. Measurement of Variation

J. Tan 1, K. A. Janni 2, and R. D. Appleman 2

1 Department of Agricultural Engineering, University of Missouri, Columbia 65211
2 University of Minnesota, St. Paul 55108

Vacuum, air temperature, and airflow in a pipeline milking system are measured at various locations to obtain systemwide data on dynamic variations. High frequency variations caused by vacuum pump operation are attenuated, and slight damping exists. Milk flow causes the greatest vacuum variations within liners during normal milking. Interaction between liners is severe when liner slip or fall-off occurs. Internal air temperature is steady. Mach numbers for internal airflow are small.

Key Words: milking equipment • vacuum • data acquisition

Submitted on January 30, 1992
Accepted on February 11, 1993






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Copyright © 1993 by the American Dairy Science Association ®.