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US 8,948,828 B2Granted
Apparatus and method for cooling a super conducting machine
AssigneeSiemens Aktiengesellschaft
InventorsMichael Frank, Peter Van Hasselt
Life of this patent
Estimating the term…
Abstract
An apparatus and a method for cooling a super conducting machine are disclosed, in which at least two condenser areas each make thermal contact with a cold head, and in which the at least two condenser areas each have a connecting line, via which the at least two condenser areas are connected fluidically to an evaporator area. A liquid cooling fluid can be moved or pumped from at least one condenser area into the evaporator area by way of a temperature difference, and a pressure difference associated therewith, in the at least two condenser areas.
Claims36
An apparatus for cooling a superconducting machine comprising:
- at least two condenser chambers, each of the at least two condenser chambers making thermal contact with a cold head and each of the at least two condenser chambers including a connecting line, via which the at least two condenser chambers are connected fluidically to an evaporator chamber, the at least two condenser chambers being designed such that a liquid cooling fluid is movable, against the force of gravity, from at least one of the at least two condenser chambers into the evaporator chamber as a result of a pressure difference between a first pressure in a first of the at least two condenser chambers and a second pressure in a second of the at least two condenser chambers, each of the respective first and second pressures being determined by a respective temperature in a respective one of the at least two condenser chambers.
A method for cooling a superconducting machine, comprising:
- at least one of
- increasing a temperature in a first condenser chamber, thermally connected to a first cold head, wherein cooling fluid is evaporated,
- expanding gas in the condenser chamber and
- increasing pressure in the condenser chamber, wherein liquid cooling fluid is moved in a first connecting pipe between the first condenser chamber and an evaporator chamber into the evaporator chamber by the at least one of temperature increase, evaporation and gas expansion;
- and
- constantly maintaining or lowering a temperature, simultaneously, in at least one second condenser chamber, thermally connected to a second cold head, as a result of which gaseous cooling fluid is moved from the evaporator chamber into the at least one second condenser chamber as a result of at least one of the temperature increase in the first condenser chamber and the lowering of the temperature in the at least one second condenser chamber.
3 more elements
A method for cooling a superconducting machine, comprising:
- maintaining a constant temperature in a first condenser chamber, thermally connected to a first cold head and fluidically connected to an evaporator chamber via a first connecting pipe, and
- simultaneously lowering a temperature in at least one second condenser chamber, thermally connected to a second cold head, whereby gaseous cooling fluid is moved from the evaporator chamber into the at least one second condenser chamber via a second connecting pipe between the evaporator chamber and the at least one second condenser chamber, as a result of at least one of the temperature reduction, a condensation of cooling fluid and a compression of gas in the second condenser chamber;
- and
- moving, as a result of the maintaining of the constant temperature in the first condenser chamber and the simultaneously lowering of the temperature in the at least one second condenser chamber, liquid cooling fluid into the evaporator chamber in the first connecting pipe between the first condenser chamber and the evaporator chamber as a result of at least one of the temperature reduction, the condensation of cooling fluid and the compression of gas in the at least second condenser chamber.
1 more element
A method for cooling a superconducting machine comprising:
- simultaneously increasing a temperature in a first condenser chamber, thermally connected to a first cold head, and in at least one second condenser chamber, thermally connected to a second cold head, wherein at least one of the temperature and temperature increase in the first condenser chamber is relatively greater than in the second condenser chamber, as a result of which, the first condenser chamber, at least one of relatively more cooling fluid is evaporated than in the second condenser chamber, gas is relatively more expanded and a pressure difference is created or relatively increased between a pressure in the first and second condenser chamber;
- and
- moving, as a result of the simultaneously increasing of the temperature in the first condenser chamber and at least one second condenser chamber, liquid cooling fluid in a first connecting pipe between the first condenser chamber and an evaporator chamber, and moving gaseous cooling fluid from the evaporator chamber into the second condenser chamber via a second connecting pipe.
A method for cooling a superconducting machine, comprising:
- simultaneously lowering a temperature in a first condenser chamber, thermally connected to a first cold head, and in at least one second condenser chamber, thermally connected to a second cold head, wherein the temperature in the first condenser chamber is relatively lower than in the second condenser chamber and/or a temperature reduction in the first condenser chamber is relatively greater than in the second condenser chamber, as a result of which relatively more cooling fluid is condensed in the first condenser chamber than in the second condenser chamber, and/or gas is relatively more compressed and/or a pressure difference is created or relatively increased between the pressure in the first and second condenser chamber;
- and
- moving, as a result of the simultaneously lowering of the temperature in the first condenser chamber and at least one second condenser chamber, liquid cooling fluid in a connecting pipe between the second condenser chamber and an evaporator chamber, and moving gaseous cooling fluid from the evaporator chamber into the first condenser chamber via another connecting pipe.
Dependencies are inferred from the claim text.