title: Effect of Common Faults on the Performance of Different Types of Vapor Compression Systems.
abstract: The effect of faults on the cooling capacity, coefficient of performance, and sensible heat ratio, was analyzed and compared for five split and rooftop systems, which use different types of expansion devices, compressors and refrigerants. The study applied multivariable polynomial and normalized performance models, which were developed for the studied systems for both fault-free and faulty conditions based on measurements obtained in a laboratory under controlled conditions. The analysis indicated differences in responses and trends between the studied systems, which underscores the challenge to devise a universal FDD algorithm for all vapor compression systems and the difficulty to develop a methodology for rating the performance of different FDD algorithms.
authors.affiliation: School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China; HVAC&R Equipment Performance Group, National Institute of Standards and Technology, 100 Bureau Drive, MS 8631, Gaithersburg, MD 20899, USA.
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Du
authors.affiliation: HVAC&R Equipment Performance Group, National Institute of Standards and Technology, 100 Bureau Drive, MS 8631, Gaithersburg, MD 20899, USA.
authors.forename: Piotr A
authors.initials: PA
authors.lastname: Domanski
authors.affiliation: HVAC&R Equipment Performance Group, National Institute of Standards and Technology, 100 Bureau Drive, MS 8631, Gaithersburg, MD 20899, USA.
authors.forename: W Vance
authors.initials: WV
authors.lastname: Payne
keywords: diagnostic efficiency; fault detection; fault diagnosis; normalized fault effect; vapor compression system