EVALUATION OF REFRIGERANT OIL SEPARATORS FOR SCREW CHILLER.
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| Title: | EVALUATION OF REFRIGERANT OIL SEPARATORS FOR SCREW CHILLER. |
|---|---|
| Authors: | MAJGAONKAR, Amey S.1,2 amey.majgaonkar@kirloskar.com, KARTHIKEYAN, A.1, BHOJWANI, Virendra K.3 |
| Source: | Thermal Science. 2026, Vol. 30 Issue 1B, p509-519. 11p. |
| Subjects: | Oil separators, Refrigeration & refrigerating machinery, Computational fluid dynamics, Pressure drop (Fluid dynamics), Cooling systems, Separation (Technology), Particle size distribution |
| Abstract: | Effective refrigerant and oil separation is must for reliable and energy efficient chiller operation. Type A is a conventional oil separator design having a larger shell diameter and single refrigerant outlet connected to condenser using a discharge piping. Type B is novel oil separator design having a smaller shell diameter and two refrigerant outlets connected to the condenser. The CFD simulation of both designs is done for comparing oil separation efficiencies, velocity distribution, pressure drop and oil droplet trajectories. The simulated pressure drop matches closely (< 5%) with experimental results in both designs. Type A design has higher (10912 Pa) pressure drop than Type B design. Simulation shows both the designs have almost equivalent oil separation efficiency at and above 25 µm oil droplet sizes. Below 25 µm oil droplet sizes, the Type B design has better oil separation efficiency. Chiller with Type B design has better oil circulation rates in liquid refrigerant than the chiller with Type A design at maximum flow rate condition. Therefore, Type B oil separator is found to be superior in performance (lower pressure drop and lower oil circulation rates) at lesser cost. Chiller with Type B oil separator is having 0.5% more refrigeration capacity, 1.6% higher COP and 1.1% lower power consumption than chiller with Type A oil separator. [ABSTRACT FROM AUTHOR] |
| Copyright of Thermal Science is the property of Society of Thermal Engineers of Serbia and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Items | – Name: Title Label: Title Group: Ti Data: EVALUATION OF REFRIGERANT OIL SEPARATORS FOR SCREW CHILLER. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22MAJGAONKAR%2C+Amey+S%2E%22">MAJGAONKAR, Amey S.</searchLink><relatesTo>1,2</relatesTo><i> amey.majgaonkar@kirloskar.com</i><br /><searchLink fieldCode="AR" term="%22KARTHIKEYAN%2C+A%2E%22">KARTHIKEYAN, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22BHOJWANI%2C+Virendra+K%2E%22">BHOJWANI, Virendra K.</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Thermal+Science%22">Thermal Science</searchLink>. 2026, Vol. 30 Issue 1B, p509-519. 11p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Oil+separators%22">Oil separators</searchLink><br /><searchLink fieldCode="DE" term="%22Refrigeration+%26+refrigerating+machinery%22">Refrigeration & refrigerating machinery</searchLink><br /><searchLink fieldCode="DE" term="%22Computational+fluid+dynamics%22">Computational fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Pressure+drop+%28Fluid+dynamics%29%22">Pressure drop (Fluid dynamics)</searchLink><br /><searchLink fieldCode="DE" term="%22Cooling+systems%22">Cooling systems</searchLink><br /><searchLink fieldCode="DE" term="%22Separation+%28Technology%29%22">Separation (Technology)</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+size+distribution%22">Particle size distribution</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Effective refrigerant and oil separation is must for reliable and energy efficient chiller operation. Type A is a conventional oil separator design having a larger shell diameter and single refrigerant outlet connected to condenser using a discharge piping. Type B is novel oil separator design having a smaller shell diameter and two refrigerant outlets connected to the condenser. The CFD simulation of both designs is done for comparing oil separation efficiencies, velocity distribution, pressure drop and oil droplet trajectories. The simulated pressure drop matches closely (< 5%) with experimental results in both designs. Type A design has higher (10912 Pa) pressure drop than Type B design. Simulation shows both the designs have almost equivalent oil separation efficiency at and above 25 µm oil droplet sizes. Below 25 µm oil droplet sizes, the Type B design has better oil separation efficiency. Chiller with Type B design has better oil circulation rates in liquid refrigerant than the chiller with Type A design at maximum flow rate condition. Therefore, Type B oil separator is found to be superior in performance (lower pressure drop and lower oil circulation rates) at lesser cost. Chiller with Type B oil separator is having 0.5% more refrigeration capacity, 1.6% higher COP and 1.1% lower power consumption than chiller with Type A oil separator. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Thermal Science is the property of Society of Thermal Engineers of Serbia and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2298/TSCI250122100M Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 11 StartPage: 509 Subjects: – SubjectFull: Oil separators Type: general – SubjectFull: Refrigeration & refrigerating machinery Type: general – SubjectFull: Computational fluid dynamics Type: general – SubjectFull: Pressure drop (Fluid dynamics) Type: general – SubjectFull: Cooling systems Type: general – SubjectFull: Separation (Technology) Type: general – SubjectFull: Particle size distribution Type: general Titles: – TitleFull: EVALUATION OF REFRIGERANT OIL SEPARATORS FOR SCREW CHILLER. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: MAJGAONKAR, Amey S. – PersonEntity: Name: NameFull: KARTHIKEYAN, A. – PersonEntity: Name: NameFull: BHOJWANI, Virendra K. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 01 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 03549836 Numbering: – Type: volume Value: 30 – Type: issue Value: 1B Titles: – TitleFull: Thermal Science Type: main |
| ResultId | 1 |
