The Friction and Wear Behavior in Controlled Alternative Refrigerant Atmosphere

Mizuhara, Kazuyuki; Akei, Masahiro; Matsuzaki, Takuya

doi:10.1080/10402009408983274

Cited by 25 publications

(17 citation statements)

References 8 publications

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“…Although the HFC-134a had showed some capability of forming a fluoride layer on the sliding surface, it did not exhibit good lubricating quality. The reason for that is the condition for the HFC to form a protective layer during sliding is more severe than in the actual compressors [25]. The gas/liquid phase transition has a significant influence on the wear mechanisms of traditional lubricants and is therefore a useful experimental study [11].…”

Section: Rolling Contact Fatigue Testing With Refrigerationmentioning

confidence: 99%

Pressurised chamber design for conducting rolling contact experiments with liquid refrigerant lubrication

2005

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Section: Rolling Contact Fatigue Testing With Refrigerationmentioning

confidence: 99%

Pressurised chamber design for conducting rolling contact experiments with liquid refrigerant lubrication

2005

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“…Many studies have been carried out in the past to measure or to estimate the film thickness in EHL contacts lubricated with oil-refrigerant mixtures. [3][4][5][7][8][9][10][11][12] More recent studies of oil-refrigerant mixtures in EHL are in Bair et al 24,25 and Tuomas. 26 In the calculation of film thickness in EHL contacts lubricated with oil-refrigerant mixtures the estimation of the mixture properties is a key intermediate step.…”

Section: Oil-refrigerant Mixturesmentioning

confidence: 99%

“…At the time, considerable effort has been invested by researchers in the study of elastohydrodynamic lubrication (EHL) in oilrefrigerant mixtures. [3][4][5][6][7][8][9][10][11][12] Also, considerable amount of experimental work has been carried out 1,2,6,13 to understand the effects of refrigerant dilution in lubricating oils and its consequences on bearing performance and life. It was found that conventional all-steel bearings started to exhibit signs of inadequate lubrication at refrigerant dilution levels of 20% to 30%.…”

Section: Introductionmentioning

confidence: 99%

Progress in rolling bearing technology for refrigerant compressors

Morales-Espejel

Wallin²,

Hauleitner

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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The paper describes the latest technological solutions in rolling bearings (ball and roller) used in refrigerant compressors. First, the numerous tribological challenges faced by rolling contacts in a lubricant environment made of oil and refrigerant mixture are discussed. It is followed by a description of the even tougher conditions derived by the replacement of the more chemically stable pre-Montreal and pre-Kyoto Protocol refrigerants by the new generation of more environmental friendly refrigerants. In these conditions, rolling bearings are expected to suffer from surface distress and sometimes corrosion fatigue. Thus, attempts to model these conditions by using advanced tribological models are described. Finally, descriptions of different solutions in rolling bearings in refrigerant compressors facing challenges in lubrication and bearing life are described, all the way from traditional oil–refrigerant mixture lubrication up to the latest innovation related to oil-free lubrication, namely the pure refrigerant lubrication.

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“…This was followed by a report on the formation of spherical particles in rolling contact fatigue, could have been a result of cavitation [8]. Several publications are available on the wear of mechanical systems and also on the rolling contact fatigue experiments with refrigerant-oil mixture lubrication [9][10][11][12]. The liquid/gas phase transition has a significant influence on the wear mechanisms and need to be investigated [13].…”

Section: Introductionmentioning

confidence: 99%