Carrier Corporation

Michael Balistreri

Robert A Chopko

Eugene D Daddis, Jr

Kenneth J Nieva

Christopher G Repice

Jason A Gough

Richard Clark

Thomas Dewolf

A system for dynamically mitigating resonance in a transport refrigeration unit (TRU) during a mission, having: a TRU controller configured for operating a TRU engine during the mission according to an operational baseline, and while operating the TRU engine, contemporaneously performing steps including: obtaining a first set of data that comprises real time measurements from one or more accelerometers installed in the TRU; converting the real measurements to a second set of data that comprises real time shock and vibration data; processing the second set of data in a control loop to determine an updated operational baseline that avoids resonance detected in the first set of data; and operating the TRU engine according to the updated operational baseline.

Mitigation of resonance in a transport refrigeration unit

A refrigeration unit for a vehicle comprising a condenser configured to be positioned outside of the vehicle, an evaporator in thermal communication with the condenser and configured to be positioned inside of a cargo space of the vehicle, the evaporator having a fan, and a movable directional element housed within the evaporator and deployable from a first position to a second position, wherein in the first position, the movable directional element is stowed within the evaporator and in the second position the movable directional element provides directional airflow control to air being blown by the fan of the evaporator.

Refrigeration unit having movable directional element

A method for fan speed control for a condenser fan in an air conditioning system includes determining a refrigerant condition at an inlet of a compressor by a condenser fan speed control module; determining a refrigerant condition at an outlet of the compressor by the condenser fan speed control module; determining a parabolic curve of a relationship between an air conditioning system performance metric and a speed of the condenser fan based on the determined inlet condition and the determined outlet condition by the condenser fan speed control module; identifying an optimum condenser fan speed based on a vertex of the parabolic curve by the condenser fan speed control module; and controlling the speed of the condenser fan to meet the optimum fan speed by the condenser fan speed control module.

Condenser fan speed control for air conditioning system efficiency optimization

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Baldwinsville, NY, United States of America

Michael Balistreri