US 12,482,879 B2
Phase change material for heat exchange fluid/coolant
Andre Antonius Maria Hendriksen, Moenchengladbach (DE); Hendrik Percy Peschel, Moenchengladbach (DE); Robert Paul Hudson, Reading (GB); and Kevin Richard West, Reading (GB)
Assigned to CASTROL LIMITED, Reading (GB)
Appl. No. 16/960,313
Filed by CASTROL LIMITED, Reading (GB)
PCT Filed Jan. 7, 2019, PCT No. PCT/EP2019/050260
§ 371(c)(1), (2) Date Jul. 6, 2020,
PCT Pub. No. WO2019/135001, PCT Pub. Date Jul. 11, 2019.
Claims priority of application No. 18150501 (EP), filed on Jan. 5, 2018.
Prior Publication US 2021/0057793 A1, Feb. 25, 2021
Int. Cl. H01M 10/6567 (2014.01); C09K 5/06 (2006.01); H01M 10/613 (2014.01)
CPC H01M 10/6567 (2015.04) [C09K 5/063 (2013.01); H01M 10/613 (2015.04)] 17 Claims
OG exemplary drawing
 
1. A method for removing thermal energy comprising:
passing a thermal management fluid in the form of an emulsion over a surface, wherein the thermal management fluid comprises
an aqueous carrier fluid; and
a dispersion of micelles within the aqueous carrier fluid, wherein each micelle comprises a solid hydrophobic core particle comprising a phase change material, wherein the phase change material is paraffin, and one or more surfactants forming a micellar shell around the solid hydrophobic core particle, wherein a weight ratio of the amount of phase change material to an amount of surfactants is in a range of 1 to 10; wherein the micelles have a mean particle size diameter in a range of about 0.1 μm to about 1 μm, wherein a micellar size distribution d10 is no less than 80% of d50 and d90 is no more than 120% of d50, and wherein the phase change material has a melting point in a range of 35° C. to 100° C.;
wherein the emulsion has a heat capacity in a range of about 10 J/gK to about 35 J/gK; and
absorbing thermal energy in the thermal management fluid from the surface.