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US 11,530,844 B2Granted
System for supporting intermittent fast transient heat loads
AssigneeRolls-Royce North American Technologies Inc.
InventorsTimothy Unton, Eric Sean Donovan
Life of this patent
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Abstract
A heat transfer system for controlling two or more heat loads, including a high transient heat load, is provided. The heat transfer system may include sensible-heat thermal energy storage. A method of transferring heat from two or more heat loads to an ambient environment is further provided.
Claims13
A heat transfer system, comprising:
- a primary fluid flow path configured to deliver a primary fluid disposed in the primary fluid flow path to a primary heat load at a substantially constant temperature, the primary fluid flow path comprising:
- a two-phase pump loop (“TPPL”), the TPPL configured to cool the primary heat load, the TPPL comprising a subcooler upstream of the primary heat load;
- a vapor compression system (“VCS”) loop configured to transfer heat from the primary fluid in the VCS loop to an ambient environment via a first condenser and to a thermal energy storage (“TES”) medium via a first heat exchanger;
- an accumulator configured to separate the primary fluid received from the TPPL and the VCS loop into a vapor-phase primary fluid and a liquid-phase primary fluid, the accumulator in fluid communication with the TPPL and the VCS loop;
- and
- an evaporator branch comprising the primary fluid and an evaporator and in fluid communication with the TPPL downstream of the accumulator and with the VCS loop upstream of a compressor;
- wherein a thermal energy storage loop comprises the evaporator, a tank, a three-way valve, a TES medium pump, and the first heat exchanger, wherein the TES medium is disposed in the TES loop;
- wherein the TES loop is configured to, during operation of the heat transfer system, cool a secondary heat load and to transfer heat to the ambient environment via the VCS loop;
- and
- wherein the subcooler is configured to dissipate heat in the primary fluid in the TPPL.
7 more elements
A heat transfer system, comprising:
- a thermal energy storage (“TES”) loop comprising a TES medium disposed in the TES loop, an evaporator, a tank, a three-way valve, a subcooler, a first heat exchanger, and a first condenser, the TES loop configured to cool a secondary heat load;
- a processor;
- and
- a primary fluid flow path configured to deliver a primary fluid disposed in the primary fluid flow path to a primary heat load at a substantially constant temperature, the primary fluid flow path comprising:
- a primary fluid disposed in the primary fluid flow path;
- a two-phase pump loop (“TPPL”), the TPPL configured to cool the primary heat load by transferring heat from the primary fluid to the TES medium via the first condenser and via the subcooler;
- a vapor compression system (“VCS”) loop configured to transfer heat from the primary fluid in the VCS loop to an ambient environment via a second condenser and to the TES medium via the first heat exchanger, the first heat exchanger downstream of the second condenser;
- an accumulator configured to separate the primary fluid received from the TPPL and the VCS loop into a vapor-phase primary fluid and a liquid-phase primary fluid, the accumulator in fluid communication with the TPPL and the VCS loop;
- and
- an evaporator branch comprising the primary fluid and an evaporator and in fluid communication with the TPPL downstream of the accumulator and with the VCS loop upstream of a compressor;
- wherein the processor is configured to cause:
- the TPPL to transfer heat from the primary heat load to the primary fluid;
- the subcooler to transfer heat from the primary fluid to the TES medium;
- and
- the TES loop to transfer heat from the secondary heat load to the TES medium;
- wherein the first condenser is configured to transfer heat from the primary fluid to the TES medium;
- wherein the first heat exchanger is configured to transfer heat from the primary fluid to the TES medium;
- wherein the evaporator is configured to transfer heat from the TES medium to the primary fluid;
- and
- wherein the second condenser is configured to transfer heat from the primary fluid to the ambient environment.
17 more elements
Dependencies are inferred from the claim text.