Disclosed herein is a heat transfer system comprising a circulation loop defining a flow path for a heat transfer fluid, and a heat transfer fluid comprising a liquid coolant, a siloxane corrosion inhibitor of formula R3-Si—O—Si(R)2x-OSiR3, wherein R is independently an alkyl group or a polyalkylene
Disclosed herein is a heat transfer system comprising a circulation loop defining a flow path for a heat transfer fluid, and a heat transfer fluid comprising a liquid coolant, a siloxane corrosion inhibitor of formula R3-Si—O—Si(R)2x-OSiR3, wherein R is independently an alkyl group or a polyalkylene oxide copolymer of 1 to 200 carbons, x is from 0 to 100, and further wherein at least one alkyl group and at least one polyalkylene oxide copolymer are present, and a non-conductive polydiorganosiloxane antifoam agent, wherein the conductivity of the heat transfer fluid is less than about 100 μS/cm, and wherein the heat transfer system comprises aluminum, magnesium, or a combination thereof, in intimate contact with the heat transfer fluid.
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1. A heat transfer system, comprising: a circulation loop defining a flow path for a heat transfer fluid; and a heat transfer fluid, comprising: a liquid coolant; a non-conductive colorant, wherein the non-conductive colorant is substantially free of functional groups selected from the group consist
1. A heat transfer system, comprising: a circulation loop defining a flow path for a heat transfer fluid; and a heat transfer fluid, comprising: a liquid coolant; a non-conductive colorant, wherein the non-conductive colorant is substantially free of functional groups selected from the group consisting of positively charged groups and negatively charged groups; a siloxane corrosion inhibitor of formula R3—Si—[O—Si(R)2]x—OSiR3, wherein R is independently an alkyl group or a polyalkylene oxide copolymer of 1 to 200 carbons, x is from 0 to 100, and further wherein at least one alkyl group and at least one polyalkylene oxide copolymer are present; and a non-conductive emulsion-based polydiorganosiloxane antifoam agent; wherein the conductivity of the heat transfer fluid is less than 100 μS/cm; and wherein the heat transfer system comprises aluminum, magnesium, or a combination thereof, in intimate contact with the heat transfer fluid. 2. The heat transfer system of claim 1, wherein the conductivity of the heat transfer fluid is about 0.02 to about 5 μS/cm. 3. The heat transfer system of claim 1, wherein the liquid coolant comprises an alcohol, water, or a combination thereof. 4. The heat transfer system of claim 3, wherein the alcohol comprises methanol, ethanol, propanol, butanol, furfurol, tetrahydrofurfurol, ethoxylated furfurol, an alkoxy alkanol, ethylene glycol, diethylene glycol, triethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, dipropylene glycol, butylene glycol, glycerol, glycerol-1,2-dimethyl ether, glycerol-1,3-dimethyl ether, monoethylether of glycerol, sorbitol, 1,2,6-hexanetriol, trimethylol propane, or a combination thereof. 5. The heat transfer system of claim 1, wherein the heat transfer fluid further comprises an azole comprising a pyrrole, a pyrazole, an imidazole, a triazole, a thiazole, a tetrazole, or a combination thereof, according to formulas (I)-(IV): wherein R1 and R2 are independently a hydrogen atom, a halogen atom such, a C1-20 alkyl or cycloalkyl group, SR3, OR3, or NR32, wherein R3 is independently a hydrogen atom, a halogen atom, or a C1-20 alkyl or cycloalkyl group, X is independently N or CR2, and Y is independently N or CR1. 6. The heat transfer system of claim 1, wherein the heat transfer fluid further comprises a non-ionic corrosion inhibitor, a tetraalkylorthosilicate ester, another non-conductive colorant, a wetting agent, a biocide, a bitterant, a non-ionic dispersant, or a combination thereof. 7. The heat transfer system of claim 1, further comprising an ion exchange resin in fluid communication with the heat transfer fluid. 8. The heat transfer system of claim 7, wherein the ion exchange resin is pre-treated with a corrosion inhibiting composition comprising a siloxane corrosion inhibitor, an azole, or a combination thereof. 9. The heat transfer system of claim 1, in the form of an internal combustion engine, a fuel cell, a battery, a solar cell, a solar panel, a photovoltaic cell, or a combination thereof. 10. The heat transfer system of claim 1, wherein the negatively charged group is selected from the group consisting of carboxylate groups, sulfonate groups, and phosphonate groups. 11. The heat transfer system of claim 1 further comprising an ion exchange resin. 12. The heat transfer system of claim 11, wherein the ion exchange resin is disposed within a heat transfer fluid reservoir. 13. The heat transfer system of claim 11, wherein the ion exchange resin is pre-treated with a corrosion inhibiting composition. 14. The heat transfer system of claim 13, wherein the corrosion inhibiting composition comprises a siloxane corrosion inhibitor, an azole, or a combination thereof. 15. A heat transfer method, comprising: contacting a heat transfer system with a heat transfer fluid; wherein the heat transfer system comprises: a circulation loop defining a flow path for the heat transfer fluid; andaluminum, magnesium, or a combination thereof;wherein the heat transfer fluid comprises:a liquid coolant;a siloxane corrosion inhibitor of formula R3—Si—[O—Si(R)2]x—OSiR3, wherein R is independently an alkyl group or a polyalkylene oxide copolymer of 1 to 200 carbons, x is from 0 to 100, and further wherein at least one alkyl group and at least one polyalkylene oxide copolymer are present;a non-conductive colorant, wherein the non-conductive colorant is substantially free of functional groups selected from the group consisting of positively charged groups and negatively charged groups; anda non-conductive emulsion-based polydiorganosiloxane antifoam agent;wherein the conductivity of the heat transfer fluid is less than 100 μS/cm; and wherein the aluminum, magnesium, or combination thereof is in intimate contact with the heat transfer fluid. 16. The heat transfer system of claim 15, wherein the positively charged group is a quaternary amine. 17. The heat transfer system of claim 15, wherein the negatively charged group is selected from the group consisting of carboxylate groups, sulfonate groups, and phosphonate groups. 18. The heat transfer system of claim 1, wherein the positively charged group is a quaternary amine.
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