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Design methodology improvements of a rotating spool compressor using a comprehensive model.

Number: pap.1376

Author(s) : BRADSHAW C. R., KEMP G., OROSZ J., et al.

Summary

An improvement to the design process of the rotating spool compressor is presented. This improvement utilizes a comprehensive model to explore two working fluids (R410A and R134a), various displaced volumes, at a variety of geometric parameters. The geometric parameters explored consists of eccentricity ratio and length-to-diameter ratio. The eccentricity ratio is varied between 0.81 and 0.92 and the length-to-diameter ratio is varied between 0.4 and 3. The key tradeoffs are evaluated and the results show that there is an optimum eccentricity and length-to-diameter ratio, which will maximize the model predicted performance, that is unique to a particular fluid and displaced volume. For R410A the modeling tool predicts that the overall isentropic efficiency will optimize at a length-to-diameter ratio that is lower than for R134a. Additionally, the tool predicts that as the displaced volume increases the overall isentropic efficiency will increase and the ideal length-to-diameter ratio will shift. The result from this study are utilized to develop a basic design for a 141 kW (40 tonsR) capacity prototype spool compressor for light-commercial air-conditioning
applications.

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Pages: 8 p.

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Details

  • Original title: Design methodology improvements of a rotating spool compressor using a comprehensive model.
  • Record ID : 30019557
  • Languages: English
  • Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
  • Publication date: 2016/07/11

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