Systems and methods for heat exchange
The present disclosure provides methods and systems for heat exchange, such as cooling a heat source. A cooling system of the present disclosure may comprise a first channel that is configured to direct a liquid coolant, a second channel that is configured to direct a vapor coolant generated from the liquid coolant, and a condenser that is configured to permit the vapor coolant to undergo phase transition to the liquid coolant. The cooling system may further comprise at least one cooling interface in fluid communication with the first channel and the second channel. The cooling interface may be configured to facilitate heat exchange between the liquid coolant and a heat source.
1. A cooling system, comprising:
a first channel that is configured to direct a liquid coolant;
a second channel that is configured to direct a vapor coolant generated from said liquid coolant;
a condenser that is configured to permit said vapor coolant to undergo phase transition to said liquid coolant; and
at least one cooling interface in fluid communication with said first channel and said second channel, wherein said at least one cooling interface comprises (i) a coolant inlet for directing said liquid coolant from said first channel towards said second channel; (ii) at least one heat exchange unit for permitting heat to flow from a source of thermal energy to said liquid coolant from said coolant inlet, thereby permitting said liquid coolant to undergo phase transition to said vapor coolant; and (iii) a coolant outlet comprising an outlet shut-off valve to permit said vapor coolant to controllably flow from said at least one heat exchange unit to said second channel, wherein the outlet shut-off valve is located between the coolant outlet of the at least one cooling interface and the condenser, and is configured to meter the flow of the vapor coolant exiting the at least one cooling interface to thereby increase pressure within the at least one cooling interface to increase a boiling point of the liquid coolant.
2. The cooling system of claim 1 , further comprising a flow generator in fluid communication with said first channel or said second channel.
3. The cooling system of claim 1 , wherein said system is operated at a pressure of less than about 1 atmosphere.
4. The cooling system of claim 1 , wherein said outlet shut-off valve is an electric or mechanical valve.
5. The cooling system of claim 1 , wherein said system is self-regulating.
6. The cooling system of claim 2 , further comprising a control unit in communication with said outlet shut-off valve, condenser, flow generator, or any combination thereof.
7. The cooling system of claim 1 , wherein the outlet shut-off valve is configured to operate as a pressure regulator in fluid communication with said first channel, second channel, condenser, at least one cooling interface, or any combination thereof.
8. The cooling system of claim 7 , wherein said pressure regulator controls a flow rate of said liquid coolant and/or said vapor coolant.
9. The cooling system of claim 1 , wherein said at least one cooling interface comprises two or more individual cooling interfaces.
10. The cooling system of claim 1 , wherein said at least one cooling interface comprises two or more cooling interfaces, and wherein said two or more cooling interfaces are connected in series.
11. The cooling system of claim 1 , wherein said at least one cooling interface comprises two or more cooling interfaces, and wherein said two or more cooling interfaces are connected in parallel.
12. The cooling system of claim 1 , wherein said cooling interface has a surface area of less than about 25 square centimeters.
13. The cooling system of claim 1 , wherein said at least one cooling interface is in direct contact with said source of thermal energy.
14. The cooling system of claim 1 , wherein said at least one cooling interface is in indirect contact with said source of thermal energy.
15. The cooling system of claim 1 , further comprising an orifice in fluid communication with said first channel or said second channel.
16. The cooling system of claim 15 , wherein said orifice aids with creating a vacuum within said at least one cooling interface.
17. The cooling system of claim 1 , wherein said system provides on demand cooling to said source of thermal energy by controlling an amount of coolant in said at least one cooling interface.
18. A method for controlling a temperature of a source of thermal energy, comprising:
a. providing a cooling system comprising at least one cooling interface in fluid communication with a first channel, a second channel, and a condenser, wherein said at least one cooling interface comprises a coolant inlet, at least one heat exchange unit, and a coolant outlet comprising an outlet shut-off valve located between the coolant outlet of the at least one cooling interface and the condenser;
b. directing a liquid coolant from said first channel to said at least one cooling interface;
c. in said at least one cooling interface, using thermal energy from said at least one heat exchange unit to subject said liquid coolant to a first phase transition to form a vapor coolant;
d. using the outlet shut-off valve to meter a flow of the vapor coolant exiting the at least one cooling interface to thereby increase pressure within the at least one cooling interface to increase a boiling point of the liquid coolant;
e. directing said vapor coolant from said at least one cooling interface through said second channel to said condenser; and
f. subjecting said vapor coolant to a second phase transition to form said liquid coolant.