Phase-change cooling of subterranean power lines
First Claim
1. A method of cooling a subterranean power line comprising:
- receiving, via a cooling tube, thermal energy generated by a current flow through at least one subterranean power line, wherein the subterranean power line is located external to the cooling tube;
absorbing, via a fluid within the cooling tube, at least some of the thermal energy received by the cooling tube;
receiving, via a heat-exchanging condenser fluidly connected to the cooling tube, the fluid in a heated, gaseous phase; and
dissipating, via the heat-exchanging condenser, the thermal energy stored in the fluid.
1 Assignment
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Accused Products
Abstract
A cooling system for a subterranean power line may include a cooling tube configured to house a fluid. Heat generated by the subterranean power line may be radiated and/or conducted to the cooling tube and absorbed by the fluid within the cooling tube. As the fluid heats up, it may change phase from a liquid to a gas. The hot gas may rise to a heat-exchanging condenser configured to dissipate the heat and condense the fluid back into a liquid. The cool, condensed liquid my return from the heat-exchanging condenser to the cooling tube. Risers, gas transport tubes, pressure regulation systems, fluid storage tanks, and other components described herein may increase the efficiency of the cooling system and/or otherwise improve the viability of the cooling system for subterranean power lines.
21 Citations
33 Claims
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1. A method of cooling a subterranean power line comprising:
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receiving, via a cooling tube, thermal energy generated by a current flow through at least one subterranean power line, wherein the subterranean power line is located external to the cooling tube; absorbing, via a fluid within the cooling tube, at least some of the thermal energy received by the cooling tube; receiving, via a heat-exchanging condenser fluidly connected to the cooling tube, the fluid in a heated, gaseous phase; and dissipating, via the heat-exchanging condenser, the thermal energy stored in the fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power line cooling system, comprising:
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a cooling tube configured to be positioned proximate at least a portion of at least one external power line, such that the power line is external to the cooling tube; a fluid within the cooling tube, the fluid configured to absorb thermal energy generated by a current flow through the at least one power line; and a heat-exchanging condenser fluidly connected to the cooling tube, the heat-exchanging condenser configured to; receive the fluid in a heated, gaseous phase, and dissipate thermal energy stored in the fluid in the gaseous phase. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of cooling a subterranean power line comprising:
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receiving, via a cooling tube, thermal energy generated by a current flow through at least one subterranean power line located external to the cooling tube; depressurizing the cooling tube to an adjustable pressure value relative to an ambient external pressure; absorbing, via a fluid within the cooling tube, at least some of the thermal energy received by the cooling tube; receiving, via a heat-exchanging condenser fluidly connected to the cooling tube, the fluid in a heated, gaseous phase; dissipating, via the heat-exchanging condenser, the thermal energy stored in the fluid; receiving the fluid in a cooled, liquid phase; and adjusting the pressure within the cooling tube based on a monitored external condition. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A power line cooling system, comprising:
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a cooling tube configured to be positioned proximate at least a portion of at least one external power line, such that the power line is external to the cooling tube; a fluid within the cooling tube, the fluid configured to absorb thermal energy generated by an electrical current flow through the at least one power line; a heat-exchanging condenser fluidly connected to the cooling tube, the heat-exchanging condenser configured to; receive the fluid in a heated, gaseous phase, and dissipate thermal energy stored in the fluid in the gaseous phase; and a pressure regulation system configured to adjust a pressure within the cooling tube based on a monitored external condition. - View Dependent Claims (29, 30, 31, 32, 33)
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Specification