INVESTIGATION OF OIL RETENTION IN VAPOR COMPRESSION SYSTEMS: A CASE STUDY

Dr. G. B Eke

INVESTIGATION OF OIL RETENTION IN VAPOR COMPRESSION SYSTEMS: A CASE STUDY

Dr. G. B Eke * §

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University of Port-Harcourt

INVESTIGATION OF OIL RETENTION IN VAPOR COMPRESSION SYSTEMS: A CASE STUDY

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Abstract

In air conditioning and refrigeration systems a small amount of oil is carried along with the refrigerant and is retained in the system components. Oil retention characteristics in the condenser, evaporator, liquid and suction lines were studied and are presented and discussed here. Refrigerant R22 with miscible lubricant was considered to investigate oil retention physics in the widest possible range of transport properties. A parametric analysis was performed in the suction line and it showed that oil retention depends on the oil mass fraction, vapor refrigerant mass flux, mixture viscosity ratio and orientation of the pipe. Computational method and correlations were used with the input data gotten from a 10KW rated compressor with five passes of inlet and outlet cross flow. In the evaporator and condenser, Premoli’s and Chisholm’s correlated void fraction models were used. In the suction line, an increase in mixture viscosity of about 55% caused a rise in oil retention in the range of 50%, depending on the oil mass fraction. Oil retention in the upward vertical suction line is about 50% higher than in the horizontal line at similar conditions. Results agreed with other published works in the same subject.

References

14 Cites in Article

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Dr. G. B Eke. 1970. "INVESTIGATION OF OIL RETENTION IN VAPOR COMPRESSION SYSTEMS: A CASE STUDY". Global Journal of Research in Engineering GJRE Volume 10 (GJRE Volume 10 Issue 7).

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GJRE Volume 10 Issue 7

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

Keywords

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Classification

GJRE-A FOR Classification 091308

Submission ReceivedFebruary 13, 2010
Peer Review Double Blind
Handling Editor
Accepted March 1, 2010
Published March 15, 2010

Version of record

v1.2

Issue date

December 10, 2010

Language

English

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Article Matrices

Total Score: 106

Country: Nigeria

Subject: Global Journal of Research in Engineering

Authors: Dr. G. B Eke and K. P Okpara (PhD/Dr. count: 1)

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