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Development and application of accelerated life test cycles for performance degradation studies on water-cooled variable-speed screw compressor chillers.

Number: 1544

Summary

HVAC&R systems are one of the largest energy consumers in both commercial and residential buildings and their operation is essential to ensure thermal comfort as well as other industrial needs. Within this context, large chillers provide chilled water to condition commercial buildings and the new generation of smart chillers feature variable speed compressors (and/or slide valve mechanisms) that enable active capacity modulation. Understanding mechanisms of degradation and developing models that enable predicting the decrease in performance with respect to the rated values in real time are still open topics in the literature. The overarching goal of this research is to investigate the performance degradation of a 145.9-ton water-cooled variable-speed screw chiller under long term operation and to gain insights into the behavior of the chiller under accelerated life testing. In this paper, an accelerated life cycle testing approach is introduced and then implemented on a dedicated laboratory experimental setup. Preliminary analyses of the chiller behavior after 1,000 h operation have been conducted and discussed.

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  • Original title: Development and application of accelerated life test cycles for performance degradation studies on water-cooled variable-speed screw compressor chillers.
  • Record ID : 30030399
  • Languages: English
  • Subject: Technology
  • Source: 2022 Purdue Conferences. 26th International Compressor Engineering Conference at Purdue.
  • Publication date: 2022/07/15

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