Systems and methods for mixing immersion fluids in immersion-cooled datacenters

1 . An immersion cooling system comprising:

an immersion tank;

a first fluid reservoir containing a first working fluid having a first boiling temperature;

a second fluid reservoir containing a second working fluid having a second boiling temperature different than the first boiling temperature;

a mixing device configured to mix at least a portion of the first working fluid and at least a portion of the second working fluid into a mixed working fluid having a third boiling temperature different than the first boiling temperature and the second boiling temperature, and to direct the mixed working fluid to the immersion tank; and

a controller programmed to control the mixing device to adjust, in the mixing device, a mixing ratio of the mixed working fluid, to adjust the third boiling temperature based on a desired amount of thermal management by the mixed working fluid, wherein the mixing ratio is a ratio of:

the at least a portion of the first working fluid; and

the at least a portion of the second working fluid.

2 . The system of claim 1 , wherein the first boiling temperature is between 30° C. and 60° C.

3 . The system of claim 1 , wherein the first boiling temperature is between 60° C. and 90° C.

4 . The system of claim 1 , wherein the first boiling temperature is at least at least 20° C. less than the second boiling temperature.

5 . The system of claim 1 , wherein the mixing device is a regulator.

6 . The system of claim 1 , wherein the mixing device is a junction between a first supply conduit configured to supply the first working fluid toward the immersion tank and a second supply conduit configured to supply the second working fluid toward the immersion tank, wherein the junction connects the first supply conduit and the second supply conduit to a mixed supply conduit that provides fluid communication to the immersion tank.

7 . The system of claim 1 , further comprising a condenser configured to condense a vapor phase of the mixed working fluid.

8 . The system of claim 1 , further comprising a separator in fluid communication with the immersion tank and configured to separate mixed working fluid into the first working fluid from the second working fluid, wherein the separator includes a heating element to selectively boil one of the first working fluid and the second working fluid from the mixed working fluid.

9 . The system of claim 1 , wherein a mixing ratio of the mixing device is based at least partially upon a power draw of at least one electronic component in the immersion tank.

10 . The system of claim 1 , further comprising:

a third fluid reservoir containing the third working fluid having a third boiling temperature different from the first boiling temperature and the second boiling temperature.

11 . The system of claim 1 further comprising:

a control service in data communication with the mixing device, wherein the control service is configured receive at least one operating property of the immersion tank or an electronic component therein and further configured to adjust a mixing ratio of the first working fluid and the second working fluid based at least partially on the operating property.

12 . The system of claim 11 , wherein the operating property is a tank temperature of an interior volume of the immersion tank measured by a sensor.

13 . The system of claim 11 , wherein the operating property is a tank pressure of an interior volume of the immersion tank measured by a sensor.

14 . The system of claim 11 , wherein the operating property is a power draw of at least one electronic component in the immersion tank.

15 . The system of claim 11 , wherein the operating property is a liquid level in the immersion tank.

16 . The system of claim 11 , wherein the operating property is received from a Virtual Machine (VM) allocator.

17 . An immersion cooling system comprising:

an immersion tank;

a first fluid reservoir containing a first working fluid having a first boiling temperature;

a second fluid reservoir containing a second working fluid having a second boiling temperature;

a mixing device configured to mix at least a portion of the first working fluid and at least a portion of the second working fluid into a mixed working fluid and direct the mixed working fluid to the immersion tank;

a stirring device positioned in the immersion tank and configured to stir the mixed working fluid in the immersion tank to maintain a homogenous distribution of the first working fluid and the second working fluid within the mixed working fluid;

a separator in fluid communication with the immersion tank and configured to separate mixed working fluid into the first working fluid from the second working fluid;

a first return conduit from the separator to the first fluid reservoir and configured to flow the first working fluid from the separator to the first fluid reservoir, and

a second return conduit from the separator to the second fluid reservoir and configured to flow the second working fluid from the separator to the second fluid reservoir.

18 . An immersion cooling system comprising:

an immersion tank;

a first fluid reservoir containing a first working fluid having a first boiling temperature;

a second fluid reservoir containing a second working fluid having a second boiling temperature;

a third fluid reservoir containing the third working fluid having a third boiling temperature different from the first boiling temperature and the second boiling temperature; and

a mixing device configured to mix at least a portion of the first working fluid, at least a portion of the second working fluid, and at least a portion of a third working fluid into a mixed working fluid and direct the mixed working fluid to the immersion tank.