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    Heat transfer fluids and methods of use
    2.
    发明授权
    Heat transfer fluids and methods of use 有权

    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.

    Heat transfer fluids and methods of use
    5.
    发明授权
    Heat transfer fluids and methods of use 有权

    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.

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