MARK R BODELL
Engineers in York, PA
License number
Pennsylvania PE034669E
Category
Engineers
Type
Professional Engineer
Address
Address
York, PA 17403
Professional information
System And Method For Stability Control In A Centrifugal Compressor
US Patent:
2005007, Apr 14, 2005
Filed:
Oct 10, 2003
Appl. No.:
10/683772
Inventors:
Mark Bodell - York PA, US
Robert Stabley - Dallastown PA, US
Wanda Miller - Harrisburg PA, US
Robert Stabley - Dallastown PA, US
Wanda Miller - Harrisburg PA, US
Assignee:
York International Corporation - York PA
International Classification:
F25B041/00, F25B043/00
US Classification:
062083000, 062206000
Abstract:
A stability control algorithm is provided for a centrifugal compressor. The stability control algorithm is used to control a variable geometry diffuser and a hot gas bypass valve (when provided) in response to the detection of compressor instabilities. The stability control algorithm can adjust the position of a diffuser ring in the variable geometry diffuser in response to the detection of a surge condition or a stall condition. In addition, the diffuser ring in the variable geometry diffuser can be adjusted to determine an optimal position of the diffuser ring. The stability control algorithm can also be used to open a hot gas bypass valve in response to the detection of continued surge conditions.
Suction Connection For Dual Centrifugal Compressor Refrigeration Systems
US Patent:
2004003, Feb 19, 2004
Filed:
Aug 4, 2003
Appl. No.:
10/633844
Inventors:
Mark Bodell - York PA, US
Dennis Deitz - Windsor PA, US
Russell Thompson - York PA, US
Dennis Deitz - Windsor PA, US
Russell Thompson - York PA, US
Assignee:
York International Corporation - York PA
International Classification:
F25B039/02, F25B041/06
US Classification:
062/515000, 062/527000
Abstract:
A dual centrifugal compressor refrigeration system has one evaporator for both compressors. The evaporator provides the centrifugal compressors with refrigerant vapor through separate suction connections for each compressor. Each suction connection has a protrusion that extends into the evaporator vessel to disturb the axial flow of refrigerant vapor in the evaporator vessel. The disturbance of the axial flow of refrigerant vapor in the evaporator vessel permits a surging compressor to draw refrigerant vapor in order to recover from the surge condition.
Stability Control System And Method For Compressors Operating In Parallel
US Patent:
2004002, Feb 12, 2004
Filed:
Jul 15, 2003
Appl. No.:
10/619640
Inventors:
Mark Bodell - York PA, US
Wanda Miller - Harrisburg PA, US
Wanda Miller - Harrisburg PA, US
Assignee:
York International Corporation - York PA
International Classification:
F25B041/00, F25B049/00, F25B001/00
US Classification:
062/228100, 062/196300
Abstract:
A control system is provided to maintain stable operating conditions for centrifugal compressors operating in parallel when one of the centrifugal compressors enters into an unstable operating condition. The control system determines an unstable operating condition in response to signals indicating the motor current or power consumption of each compressor and the position of the pre-rotation vanes of the compressors. Once an unstable operating condition is determined, the control system closes the pre-rotation vanes to each compressor until the unstable operating condition has been corrected.
Control System
US Patent:
2008025, Oct 16, 2008
Filed:
Apr 14, 2008
Appl. No.:
12/102459
Inventors:
Mark R. Bodell - York PA, US
Robert E. Stabley - Dallastown PA, US
Wanda J. Miller - Mequon PA, US
Robert E. Stabley - Dallastown PA, US
Wanda J. Miller - Mequon PA, US
International Classification:
F04D 27/02, F25B 1/04
US Classification:
415 13, 415 1, 62498
Abstract:
A stability control algorithm is provided for a centrifugal compressor. The stability control algorithm is used to control a variable geometry diffuser and a hot gas bypass valve (when provided) in response to the detection of compressor instabilities. The stability control algorithm can adjust the position of a diffuser ring in the variable geometry diffuser in response to the detection of a surge condition or a stall condition. The diffuser ring in the variable geometry diffuser can be adjusted to determine an optimal position of the diffuser ring. The stability control algorithm can also be used to open a hot gas bypass valve in response to the detection of continued surge conditions.