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Effect of Common Faults on the Performance of Different Vapor Compression Systems



Zhimin Du, Piotr A. Domanski, William V. Payne


The effect of faults on cooling capacity, COP, sensible heat ratio, and superheat/subcooling temperatures in five split and rooftop systems, which use different types of expansion devices, compressors and refrigerants, are separately compared and analyzed. The differences in fault impacts on these different vapor compression systems will aid in understanding performance variations and understanding why a fault detection and diagnosis (FDD) tool is efficient for some specific systems under limited scenarios but inefficient for others. Based on experimental data, this paper develops multivariate polynomial and normalized performance models for five different systems to estimate performance parameters and features under both fault-free and faulty conditions. Fault effects for these different systems for various fault scenarios in the cooling mode are investigated.
Applied Thermal Engineering


diagnostic efficiency, fault detection, fault diagnosis, normalized fault effect, vapor compression system


Du, Z. , Domanski, P. and Payne, W. (2015), Effect of Common Faults on the Performance of Different Vapor Compression Systems, Applied Thermal Engineering, [online],, (Accessed July 17, 2024)


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Created December 30, 2015, Updated October 14, 2021