Friction and wear of the lubricated vane and roller materials in a carbon dioxide refrigerant

Jeon, Hong-Gyu; Oh, Se-Doo; Lee, Young-Ze

doi:10.1016/j.wear.2008.12.097

Cited by 30 publications

(12 citation statements)

References 6 publications

(7 reference statements)

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“…A pin-on-disk geometry was used in a high pressure chamber to investigate the friction and wear performance of CO2 with PAG and POE oils [98]. The pin was made of high speed tool steel and the disk was made of Ni-Cr-Mo gray cast iron.…”

Section: Carbon Dioxide (Co2)mentioning

confidence: 99%

A Historical Review on the Tribological Performance of Refrigerants used in Compressors

Bhutta¹,

Khan²,

Garland³

et al. 2018

Tribol. Ind.

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Refrigerants directly affect the tribological performance of interacting components in a compressor. Since the introduction of artificially formulated refrigerants, the types of refrigerants used in compressors have changed over the years. Apart from evaluating the physical, chemical and thermodynamic properties of refrigerants, the refrigerants have also been studied from a view point of tribology by various researchers worldwide. Changing a refrigerant in a compressor not only has an effect on the thermodynamic cycle but also effects the lubricants viscosity, lubricants pressure-viscosity coefficient, oil film thickness, lubricant/refrigerant miscibility, friction, wear, durability, reliability and overall power consumption. Refrigerants have been studied from a view point of tribology by varying the contact geometries, by using different lubricating oils with and without additives, by altering the environmental pressure/temperature, by changing the phase of the refrigerant, by using different interacting materials and by applying numerous surface treatments. The tribological behavior of refrigerants can be better understood by consolidating the findings in a comprehensive manner. An indepth review on the tribological behavior of refrigerants is missing from the literature. This article reviews the tribological studies carried out on refrigerants, with focus on refrigerants used in domestic appliances, automobile air-conditioning systems and small scale industrial and commercial applications.

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Section: Carbon Dioxide (Co2)mentioning

confidence: 99%

A Historical Review on the Tribological Performance of Refrigerants used in Compressors

Bhutta¹,

Khan²,

Garland³

et al. 2018

Tribol. Ind.

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show abstract

“…Wear occurs in the compressor can be accelerated by incorrect lubrication conditions. Tribological and wear studies [152][153][154][155] were performed to understand wear characteristics and estimate the wear rates for various combinations of refrigerants and lubricants. Other than wear at the vane tip, wear between the vane and slot was also observed.…”

Section: Vane Dynamics and Vane Tip Tribologymentioning

confidence: 99%

A Review on Sliding Vane and Rolling Piston Compressors

Ooi

2021

Machines

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Rotary compressors have been employed in heating and cooling for more than a century and are ubiquitous in daily life but there has not been any comprehensive record of their development and technological advances. This review paper attempts to provide a comprehensive account of the advances in R&D and design evolution of these rotary compressors since their inception, namely the sliding vane compressor, rolling piston compressor, and their design variants in open literature. This is to showcase the current state-of-the-art for these compressors so that researchers can use it as a basis for future work. Based on authors’ insight, inter-disciplinary research combined with advancements in ‘disruptive’ technology such as artificial intelligence and advancements in additive manufacturing might be a promising research direction to bring about improvements in rotary compressor performance to meet mankind’s growing needs for cooling and heating applications.

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“…This makes carbon dioxide a good candidate to be used as a refrigerant. A number of experimental investigations have been performed to study the behavior and performance of CO 2 [41,42,43,44,45,46,47,48,49,50,51,52,53,54]. The studies concerned with the tribological analysis of CO 2 are mainly conducted at high pressures because of its low critical temperature.…”

Section: Introductionmentioning

confidence: 99%

Wear Performance Analysis of Ni–Al2O3 Nanocomposite Coatings under Nonconventional Lubrication

2018

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This article presents a wear study of Ni–Al2O3 nanocomposite coatings in comparison to uncoated steel contacts under reciprocating motion. A ball-on-flat type contact configuration has been used in this study in which a reciprocating flat steel sample has been used in a coated and uncoated state against a stationary steel ball under refrigerant lubrication. The next generation of environmentally friendly refrigerant HFE-7000 has been used itself as lubricant in this study without the influence of any external lubricant. The thermodynamic applications and performance of HFE-7000 is being studied worldwide, as it is replacing the previous generation of refrigerants. No work however has been previously performed to evaluate the wear performance of HFE-7000 using nanocomposite coatings. The wear scar developed on each of the flat and ball samples was studied using a Scanning Electron Microscope (SEM). The micrographs show that a combination of adhesive and abrasive wear occurs when using uncoated steel samples. Micro-delamination is observed in the case of Ni–Al2O3 nanocomposite coatings accompanied by adhesive and abrasive wear. Wear volume of the wear track was calculated using a White Light Interferometer. Energy-Dispersive X-ray Spectroscopic (EDS) analysis of the samples reveals fluorine and oxygen on the rubbing parts when tested using coated as well as uncoated samples. The formation of these fluorinated and oxygenated tribo-films helps to reduce wear and their formation is accelerated by increasing the refrigerant temperature. Ni–Al2O3 nanocomposite coatings show good wear performance at low and high loads in comparison to uncoated contacts. At intermediate loads the coated contacts resulted in increased wear, especially at low loads. This increase in wear is associated with the delamination of the coating and the slow formation of protective surface films under these testing conditions.

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Friction and wear of the lubricated vane and roller materials in a carbon dioxide refrigerant

Cited by 30 publications

References 6 publications

A Historical Review on the Tribological Performance of Refrigerants used in Compressors

A Historical Review on the Tribological Performance of Refrigerants used in Compressors

A Review on Sliding Vane and Rolling Piston Compressors

Wear Performance Analysis of Ni–Al2O3 Nanocomposite Coatings under Nonconventional Lubrication

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