Heat transfer systems using mixtures of polyols and iconic liquids
AssigneeE. I. Du Pont de Nemours and Company
InventorsMark Brandon Shiflett, Akimichi Yokozeki
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Abstract
A thermal energy transfer system utilizes a composition containing one or more polyols, such as 1,3-propanediol, and one or more ionic liquids as a thermal energy transfer composition. There is also provided a method of transferring thermal energy and a process for temperature adjustment, either cooling or heating, using such a composition.
Claims20
An apparatus for thermal energy transfer comprising a thermal energy transfer composition that comprises in admixture a polyol and at least one ionic liquid.
An apparatus for temperature adjustment comprising (a) an absorber that forms a mixture of a refrigerant and an absorbent;
- (b) a generator that receives the mixture from the absorber and heats the mixture to separate refrigerant, in vapor form, from the absorbent, and increases the pressure of the refrigerant vapor;
- (c) a condenser that receives the vapor from the generator and condenses the vapor under pressure to a liquid;
- (d) a pressure reduction device through which the liquid refrigerant leaving the condenser passes to reduce the pressure of the liquid to form a mixture of liquid and vapor refrigerant;
- (e) an evaporator that receives the mixture of liquid and vapor refrigerant that passes through the pressure reduction device to evaporate the remaining liquid to form refrigerant vapor;
- and (f) a conduit that passes the refrigerant vapor leaving the evaporator back to the absorber;
- wherein the absorbent comprises an ionic liquid, and the refrigerant comprises a polyol.
A method of transferring thermal energy comprising contacting a solid object, a fluid, or a chamber that contains the fluid with a thermal energy transfer composition, wherein the solid object or fluid has a first temperature, the thermal energy transfer composition has a second temperature, the first and second temperatures are not equal, and the thermal energy transfer composition comprises a polyol and an ionic liquid.
A composition comprising in admixture a polyol and at least one ionic liquid.
Dependencies are inferred from the claim text.