Performance investigation of a variable speed vapor compression system for fault detection and diagnosis |
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Authors: | Minsung Kim Min Soo Kim |
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Affiliation: | School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, South Korea |
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Abstract: | An experimental study has been performed to investigate the effect of four artificial faults on the performance of a variable speed vapor compression system. Experimental setup to test several artificial faults was made by modifying the conventional vapor compression test rig. Four major faults of compressor fault, condenser fault, evaporator fault, and refrigerant leakage, were implemented by observing the variation of cooling capacity. Two different rule-based modules for constant and variable speed operations were organized for an easy diagnosis of system faults. These two modules were applied differently as the cooling capacity satisfies the necessary air conditioning load. As a result, COP degradation due to the fault in a variable speed system is severer than that in a constant speed system. |
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Keywords: | Compression system Compressor Variation Speed Correlation Fault PerformanceMots clé s: Systè me à compression Compresseur Variation Vitesse Corré lation Panne Performance |
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