公开(公告)号：US20210190206A1

公开(公告)日：2021-06-24

申请号：US16953074

申请日：2020-11-19

Applicant: ExxonMobil Research and Engineering Company

Inventor： Gary Christensen ,  David A. Racke ,  Mark Sitko

IPC: F16J15/16 ,  F16C3/02

Abstract: This disclosure relates to a method for controlling lubrication of a rotary shaft seal. The method involves providing an apparatus having a bulk lubricating oil reservoir, a rotary shaft that passes through the bulk lubricating oil reservoir, and a rotary shaft seal. The rotary shaft seal has a sealing edge in proximity with the rotary shaft creating a contact zone. The contact zone has a film of lubricating oil. The method also involves increasing the rate of heat flow along the rotary shaft to reduce temperature of the film of lubricating oil in the contact zone. Increasing the rate of heat flow along the rotary shaft is accomplished by using rotary shaft materials of construction having sufficient high thermal conductivity, rotary shaft coatings having sufficient high thermal conductivities, or increasing the surface area of the rotary shaft. This disclosure also relates to a method for controlling heat transfer in a contact zone, and a method for improving performance of an apparatus.

公开(公告)号：US20140274836A1

公开(公告)日：2014-09-18

申请号：US13835031

申请日：2013-03-15

Applicant: ExxonMobil Research and Engineering Company

Inventor： Suzzy C. Ho ,  Kathy K. Cooper ,  Gary Christensen

IPC: C10M105/06

CPC classification number: C10M105/06 ,  C10M111/02 ,  C10M2203/065 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2207/028 ,  C10M2207/262 ,  C10M2215/28 ,  C10M2219/046 ,  C10M2223/045 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2230/36 ,  C10N2240/10 ,  C10N2220/022

Abstract: A method for improving thermo-oxidative stability and elastomer compatibility in an apparatus lubricated with a lubricating oil by using as the lubricating oil a formulated oil including a lubricating oil base stock. The lubricating oil base stock includes a multi-aromatic base stock of the formula: R1—R2—(X—R2)n—R1 wherein each R1 is the same or different and is a terminal group, each R2 is the same or different and represents a substituted or unsubstituted aromatic moiety; each X is a linking moiety that is carbon-carbon single bond or a linking group, n is a number from 1 to 2000, and the ratio of the total number of aromatic ring carbon atoms to aliphatic carbon atoms in said formula is greater than 0.32:1. The multi-aromatic base stock has a kinematic viscosity greater than 20 mm2/s at 100° C.

Abstract translation: 一种在润滑油润滑的装置中，通过使用包含润滑油基础油的配制油作为润滑油，提高热氧化稳定性和弹性体相容性的方法。 润滑油基础油料包括下式的多芳族基础油料：R1-R2-（X-R2）n-R1，其中每个R1相同或不同，为末端基团，每个R2相同或不同， 表示取代或未取代的芳族部分; 每个X是碳 - 碳单键或连接基团的连接部分，n是1至2000的数，所述式中芳族环碳原子与脂族碳原子总数之比大于0.32 ：1。 多芳族基料在100℃下的运动粘度大于20mm 2 / s

公开(公告)号：US10712105B1

公开(公告)日：2020-07-14

申请号：US16447398

申请日：2019-06-20

Applicant: ExxonMobil Research and Engineering Company

Inventor： Gary Christensen ,  Kevin J. Kelly ,  Shuji Luo ,  Heinrich R. Braun ,  Tobias Klande ,  Behrouz Engheta ,  Jorg F. W. Weber ,  Andrew E. Taggi

IPC: C09K5/10 ,  F28F23/00

Abstract: This disclosure relates to heat transfer fluids for use in heat transfer systems. The heat transfer fluids comprise at least one non-aqueous dielectric heat transfer fluid. The non-aqueous dielectric heat transfer fluid has density (ρ), specific heat (cp), and dynamic viscosity (μ) properties. The heat transfer fluids have a normalized effectiveness factor (NEFfluid) as determined by the following equation: N ⁢ E ⁢ F fluid = DEF fluid DEF reference ; wherein DEFfluid is a dimensional effectiveness factor for the heat transfer fluid that is determined based on an equation designated in Table 1 below for a selected pump and a selected heat transfer circuit dominant flow regime; wherein DEFreference is a dimensional effectiveness factor for a reference fluid that is determined using the same equation designated in Table 1 for DEFfluid above for the same selected pump and the same selected heat transfer circuit dominant flow regime; and TABLE 1 (Heat Transfer Fluid and Reference Fluid) Selected Heat Transfer Circuit Flow Regime Transition Selected PumpLaminar(Blasius) Positive Displacement Pumpρ1 cp1 μ−1ρ0.25 cp1 μ−0.25 Centrifugal Pumpρ0.19 cp1 μ−0.19ρ0.04 cp1 μ−0.04 wherein the heat transfer fluid has a NEFfluid value equal to or greater than 1.0. This disclosure also provides a method for improving performance of a heat transfer system, a method for improving performance of an apparatus, and a method for selecting a heat transfer fluid for use in a heat transfer system. The heat transfer fluids and methods of this disclosure are applicable in situations where the heat transfer system is dominated by heat conveyance.

公开(公告)号：US09062269B2

公开(公告)日：2015-06-23

申请号：US13835031

申请日：2013-03-15

Applicant: ExxonMobil Research and Engineering Company

Inventor： Suzzy C. Ho ,  Kathy K. Cooper ,  Gary Christensen

IPC: C10M111/02 ,  C10M105/06

CPC classification number: C10M105/06 ,  C10M111/02 ,  C10M2203/065 ,  C10M2203/1006 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2207/028 ,  C10M2207/262 ,  C10M2215/28 ,  C10M2219/046 ,  C10M2223/045 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2230/36 ,  C10N2240/10 ,  C10N2220/022

Abstract: A method for improving thermo-oxidative stability and elastomer compatibility in an apparatus lubricated with a lubricating oil by using as the lubricating oil a formulated oil including a lubricating oil base stock. The lubricating oil base stock includes a multi-aromatic base stock of the formula: R1—R2—(X—R2)n—R1 wherein each R1 is the same or different and is a terminal group, each R2 is the same or different and represents a substituted or unsubstituted aromatic moiety; each X is a linking moiety that is carbon-carbon single bond or a linking group, n is a number from 1 to 2000, and the ratio of the total number of aromatic ring carbon atoms to aliphatic carbon atoms in said formula is greater than 0.32:1. The multi-aromatic base stock has a kinematic viscosity greater than 20 mm2/s at 100° C.

Abstract translation: 一种在润滑油润滑的装置中，通过使用包含润滑油基础油的配制油作为润滑油，提高热氧化稳定性和弹性体相容性的方法。 润滑油基础油料包括下式的多芳族基础油料：R1-R2-（X-R2）n-R1，其中每个R1相同或不同，为末端基团，每个R2相同或不同， 表示取代或未取代的芳族部分; 每个X是碳 - 碳单键或连接基团的连接部分，n是1至2000的数，并且所述式中芳族环碳原子与脂族碳原子总数之比大于0.32 ：1。 多芳族基料在100℃下的运动粘度大于20mm 2 / s

公开(公告)号：US11092393B1

公开(公告)日：2021-08-17

申请号：US16892897

申请日：2020-06-04

Applicant: ExxonMobil Research and Engineering Company

Inventor： Gary Christensen ,  Kevin J. Kelly ,  Shuji Luo ,  Heinrich R. Braun ,  Tobias Klande ,  Behrouz Engheta ,  Jorg F. W. Weber ,  Andrew E. Taggi

IPC: C09K5/10 ,  F28F23/00

Abstract: This disclosure relates to heat transfer fluids for use in heat transfer systems. The heat transfer fluids comprise at least one non-aqueous dielectric heat transfer fluid. The non-aqueous dielectric heat transfer fluid has density (ρ), specific heat (cp), and dynamic viscosity (μ) properties. The heat transfer fluids have a normalized effectiveness factor (NEFfluid) as determined by the following equation: N ⁢ E ⁢ F fluid = D ⁢ E ⁢ F fluid D ⁢ E ⁢ F reference ; wherein DEFfluid is a dimensional effectiveness factor for the heat transfer fluid that is determined based on an equation designated in Table 1 below for a selected pump and a selected heat transfer circuit dominant flow regime; wherein DEFreference is a dimensional effectiveness factor for a reference fluid that is determined using the same equation designated in Table 1 for DEFfluid above for the same selected pump and the same selected heat transfer circuit dominant flow regime; and TABLE 1 (Heat Transfer Fluid and Reference Fluid) Selected Heat Transfer Circuit Flow Regime Selected Pump
Laminar
Transition (Blasius) Positive Displacement Pump
ρ1 cp1 μ−1
ρ0.25 cp1 μ−0.25 Centrifugal Pump
ρ0.19 cp1 μ−0.19
ρ0.04 cp1 μ−0.04 wherein the heat transfer fluid has a NEFfluid value equal to or greater than 1.0. This disclosure also provides a method for improving performance of a heat transfer system, a method for improving performance of an apparatus, and a method for selecting a heat transfer fluid for use in a heat transfer system. The heat transfer fluids and methods of this disclosure are applicable in situations where the heat transfer system is dominated by heat conveyance.