US Patent:
20050160748, Jul 28, 2005
Inventors:
Dennis Shaffer - Thomasville PA, US
Russell Thompson - York PA, US
Stephen Kachmar - Dover PA, US
Eric Smyder - York PA, US
Brenda Roberts - Dover PA, US
Daniel Petroskie - Goldsboro PA, US
Ryan Eisensmith - York PA, US
International Classification:
F25B049/00
F25B001/00
F02C001/00
Abstract:
A control system for a steam turbine driven chiller unit is provided. The control system automatically utilizes the full range of the governor, compressor pre-rotation vanes, and hot gas bypass valve capabilities to control the capacity of the chiller and provide anti-surge and override control functions to prevent undesirable operational ranges while maintaining maximum efficiency of operation.