TY - GEN
T1 - Load-predictive temperature control of an air conditioning and refrigeration system
AU - Li, Bin
AU - Mohs, William
AU - Alleyne, Andrew
PY - 2010
Y1 - 2010
N2 - In air conditioning and refrigeration (ACR) systems, the established industry method of capacity control is compressor ON/OFF cycling operations. This paper presents the design of load-predictive controller using compressor ON/OFF operations for temperature regulation with a target application of transport refrigeration systems. A dynamic ACR system model, which consists of a refrigerated cargo space, and a vapor compressor cycle (VCC) system, is developed. The validated VCC model is presented that captures compressor ON/OFF duty cycling dynamics. The dynamic cargo space model is described to accommodate varying conditions, such as door openings. The load-predictive controller tracks the pre-cool and predictive refrigeration load information which is generated based on the operating conditions in the next door-opening event, and decides to operate the VCC system with either normal ON/OFF control or pre-cool actions. Simulation results show that improved cargo space temperature regulation is obtained by implementing the load-predictive control strategy over the baseline industrial hysteretic control scheme in the coupled VCC/cargo space system.
AB - In air conditioning and refrigeration (ACR) systems, the established industry method of capacity control is compressor ON/OFF cycling operations. This paper presents the design of load-predictive controller using compressor ON/OFF operations for temperature regulation with a target application of transport refrigeration systems. A dynamic ACR system model, which consists of a refrigerated cargo space, and a vapor compressor cycle (VCC) system, is developed. The validated VCC model is presented that captures compressor ON/OFF duty cycling dynamics. The dynamic cargo space model is described to accommodate varying conditions, such as door openings. The load-predictive controller tracks the pre-cool and predictive refrigeration load information which is generated based on the operating conditions in the next door-opening event, and decides to operate the VCC system with either normal ON/OFF control or pre-cool actions. Simulation results show that improved cargo space temperature regulation is obtained by implementing the load-predictive control strategy over the baseline industrial hysteretic control scheme in the coupled VCC/cargo space system.
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U2 - 10.1115/DSCC2009-2678
DO - 10.1115/DSCC2009-2678
M3 - Conference contribution
AN - SCOPUS:77953742453
SN - 9780791848920
T3 - Proceedings of the ASME Dynamic Systems and Control Conference 2009, DSCC2009
SP - 1385
EP - 1391
BT - Proceedings of the ASME Dynamic Systems and Control Conference 2009, DSCC2009
PB - American Society of Mechanical Engineers (ASME)
T2 - 2009 ASME Dynamic Systems and Control Conference, DSCC2009
Y2 - 12 October 2009 through 14 October 2009
ER -