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Oil flow measurement at the compressor discharge.

Number: pap.1612

Author(s) : XU J., HRNJAK P.

Summary

Oil circulating in the vapor compression system has a significant impact on the system performance. This paper presents a method to calculate the oil retention and oil circulation ratio (OCR) based on oil flow parameters, including oil film thickness and velocity, oil droplet size and velocity, and system mass flow rate. Oil flow parameters are determined by visualization using high-speed camera and video processing program. The estimated oil retention and oil circulation ratio results are compared with the experimental sampling results under different compressor speed. The agreement between video results and sampling results verifies the accuracy of the optical method, which can be applied in other annular-mist flow analysis. It also shows that most of the oil exists in film by mass while oil droplets contributes more to the oil mass flow rate because oil droplets travel in a much higher speed.

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Pages: 10 p.

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Details

  • Original title: Oil flow measurement at the compressor discharge.
  • Record ID : 30019574
  • Languages: English
  • Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
  • Publication date: 2016/07/11

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