Fluoroketone C&lt;inf&gt;2&lt;/inf&gt;F&lt;inf&gt;5&lt;/inf&gt;C(O)CF(CF&lt;inf&gt;3&lt;/inf&gt;)&lt;inf&gt;2&lt;/inf&gt; as a Heat Transfer Fluid for Passive and Pumped 2-Phase Applications

Tuma, Phillip E.

doi:10.1109/stherm.2008.4509386

Cited by 30 publications

(18 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, PFCs do not break down readily in the atmosphere and, as a result, have high global warming potentials (GWPs). Their replacements will likely include hydrofluoroethers (HFEs) 13 and fluoroketones (FKs) 14 . High pressure refrigerants like C 2 F 4 H 2 (HFC-134a) have been proposed as immersion working fluids 15,16 .…”

Section: Fluid Chemistriesmentioning

confidence: 99%

Design considerations relating to non-thermal aspects of passive 2-phase immersion cooling

Tuma

2011

2011 27th Annual IEEE Semiconductor Thermal Measurement and Management Symposium

Self Cite

View full text Add to dashboard Cite

There is renewed interest in passive 2-phase immersion for cooling power electronics and high performance computers. This can be attributed to recent research showing its performance potential compared with more complex and costly techniques, to innovations that simplify its application and to a general trend toward higher power densities.Though the thermal performance capabilities of passive 2-phase immersion cooling are well documented, the technique is not widely practiced and system designers will find little published information concerning subtler and very critical aspects of system design. There is no manual, for example, concerning practical details like material compatibility, electrical signal integrity (SI), fluid decomposition, management of moisture and light gases, and so on. This paper presents a useful material compatibility test method and explains the mechanisms of distillation and extraction that are intrinsic to a refluxing 2-phase system and by which wetted materials interact with the fluid and each other. It discusses sources, implications and techniques for removal of organic contaminants, water, non-condensable air and fluid thermal decomposition products. Data are presented from sub-20GHz SI experiments conducted with backplane connectors and microstrip transmission lines submerged in two classes of environmentally sustainable working fluids. It is hoped that this overview will demystify these subjects for designers unfamiliar with passive 2-phase immersion cooling and encourage more widespread adoption of this elegant and proven technology.

show abstract

Section: Fluid Chemistriesmentioning

confidence: 99%

Design considerations relating to non-thermal aspects of passive 2-phase immersion cooling

Tuma

2011

2011 27th Annual IEEE Semiconductor Thermal Measurement and Management Symposium

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is commonly used as a fire suppressant material, 7 magnesium treatment and two-phase submerged cooling covering gas. 8 In the 145kV GIS electrical performance test, it is shown that the addition of C 6 F 12 O to the air can achieve the same dielectric strength as SF 6 . 9 The molecular formula of this substance is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Partial discharge characteristics of C6F12O/CO2 mixed gas at power frequency AC voltage

Zhang

Wang

Rao³

et al. 2019

AIP Advances

View full text Add to dashboard Cite

The greenhouse effect of SF6 has made its application in various types of gas-insulated equipment increasingly restricted. C6F12O combines the advantages of insulation strength, safety and environmental friendliness and is considered to have potential for use in medium and low voltage equipment when mixed with buffer gas. In this paper, an experimental study on the partial discharge characteristics of C6F12O/CO2 mixed gas was carried out. The partial discharge initial voltage and the partial discharge extinction voltage of the mixed gas under the power frequency voltage are measured, and compared with the breakdown voltage. It was found that the partial discharge initiation voltage and the extinction voltage of the mixed gas gradually increased with the mixing ratio, and the influence of the gas pressure on the high mixing ratio was large. Compared with pure CO2, the difference between the partial discharge starting voltage and the breakdown voltage of the mixed gas is large. The research in this paper can provide guidance for the operation and maintenance of C6F12O mixed gas in the application of medium and low voltage equipment.

show abstract

“…C 6 F 12 O is non-combustible and non-toxic and currently limited for use in fire extinguishing agent [11], magnesium treatment, and two-phase immersion cooling system covered gas [12]. C 6 F 12 O molecule is an ozone depletion potential (ODP) gas with a GWP value close to 1 and dielectric strength of approximately 1.7 times that of pure SF 6 gas [13].…”

Section: Introductionmentioning

confidence: 99%

Insulation Strength and Decomposition Characteristics of a C6F12O and N2 Gas Mixture

et al. 2017

View full text Add to dashboard Cite

This paper explores the decomposition characteristics of a new type of environmentally friendly insulating gas C 6 F 12 O and N 2 mixed gas under AC voltage. The breakdown behavior of 3% C 6 F 12 O and N 2 mixed gas in quasi-uniform field was investigated through a breakdown experiment. The self-recovery of the mixed gas was analyzed by 100 breakdown experiments. The decomposition products of C 6 F 12 O and N 2 under breakdown voltage were determined by gas chromatography-mass spectrometer (GC-MS). Finally, the decomposition process of the products was calculated by density functional theory, and the ionization energy, affinity, and molecular orbital gap of the decomposition products were also calculated. The properties of the decomposition products were analyzed from the aspects of insulation and environmental protection. The experimental results show that the 3% C 6 F 12 O and N 2 mixed gas did not show a downward trend over 100 breakdown tests under a 0.10 MPa breakdown voltage. The decomposition products after breakdown were CF

show abstract

Fluoroketone C<inf>2</inf>F<inf>5</inf>C(O)CF(CF<inf>3</inf>)<inf>2</inf> as a Heat Transfer Fluid for Passive and Pumped 2-Phase Applications

Cited by 30 publications

References 18 publications

Design considerations relating to non-thermal aspects of passive 2-phase immersion cooling

Design considerations relating to non-thermal aspects of passive 2-phase immersion cooling

Partial discharge characteristics of C6F12O/CO2 mixed gas at power frequency AC voltage

Insulation Strength and Decomposition Characteristics of a C6F12O and N2 Gas Mixture

Contact Info

Product

Resources

About