Optimization of multiple chiller systems

The following investigation describes the method used in minimizing the power consumption of multiple chiller systems by determining not only the most efficient combination of chillers in the system but also the optimal operating levels of each chiller making up the combination. The general mathematical formulation for a system of N chillers with arbitrary performance characteristics is solved and applied to the special case of chillers having parabolic performance characteristics. The analysis is then applied to various two and six chiller systems using performance characteristics of centrifugal chillers in order to show the optimal operating conditions and to illustrate the potential energy savings of multiple chiller systems compared to a single chiller system. The effects of various combinations of chillers and the effects of entering condenser water temperature are systematically investigated. A particular six chiller combination, corresponding to portions of the existing chiller systems at Virginia Tech, is also investigated.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Mechanical Engineering

Department dc:contributor.department

Mechanical Engineering

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1984

Author dc:creator

• Oetjen, Michael Kent

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/10919/87151

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/87151