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AN060404-1
Application note
Hitachi AN060404-1 Application Note
Applying inverters to centrifugal compressors in hvac chillers
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Table of Contents
1
Applying Inverters to Centrifugal Compressors in HVAC Chillers
2
Factors to Consider When Applying Inverters
3
Lubricating Oil Circulation
4
Chiller Built-In Logic
5
Speed Control and Compressor Vane Control
6
Energy Savings Potential
7
Recommendations for Different Compressor Types
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Application Note:
APPLYING INVERTERS TO
CENTRIFUGAL COMPRESSORS
IN HVAC CHILLERS
Please refer also to the
Inverter Instruction Manual
AN060404-1
Hitachi America, Ltd.
© 2004 Hitachi America, Ltd.
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Summary of Contents for Hitachi AN060404-1
Page 1
Application Note: APPLYING INVERTERS TO CENTRIFUGAL COMPRESSORS IN HVAC CHILLERS Please refer also to the Inverter Instruction Manual AN060404-1 Hitachi America, Ltd. © 2004 Hitachi America, Ltd.
Page 2
These are constant torque loads, and do not offer significant energy savings potential. Screw-type compressors present other technical problems, and are probably not suitable for use with inverters. Again, consult the chiller manufacturer for specific recommendations. Hitachi America, Ltd. © 2004 Hitachi America, Ltd.
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