Gas turbine engine thermal management system
The present disclosure provides systems and methods related to thermal management systems for gas turbine engines. For example, a thermal management system comprises a thermally neutral heat transfer fluid circuit, a first heat exchanger disposed on the fluid circuit, and a second heat exchanger disposed on the fluid circuit.
1. A thermal management system, comprising:
a thermally neutral heat transfer fluid circuit;
a first heat exchanger disposed on the fluid circuit; and
a heat transfer fluid to oil heat exchanger disposed on the fluid circuit, wherein the heat transfer fluid to oil heat exchanger is disposed adjacent to a primary function oil circulation system such that heat transfer fluid is configured to thermally communicate with oil in an oil flow pathway of the primary function oil circulation system, wherein the primary function oil circulation system is configured to perform a lubricant function independent of the thermal management system, wherein the oil flow pathway of the primary function oil circulation system is a direct route to a portion of an engine in which the oil is configured to perform the lubricant function of the primary oil circulation system.
2. The thermal management system of claim 1 , wherein the first heat exchanger comprises an air to heat transfer fluid heat exchanger.
3. The thermal management system of claim 1 , wherein the heat transfer fluid to oil heat exchanger is thermally coupled to the primary function oil circulation system.
4. The thermal management system of claim 1 , wherein the first heat exchanger comprises an air to heat transfer fluid heat exchanger, wherein the thermal management system further comprises:
a heat transfer fluid to fuel heat exchanger.
5. The thermal management system of claim 4 , wherein the fluid circuit is configured to circulate thermally neutral heat transfer fluid from the heat exchange fluid to oil heat exchanger, to the heat transfer fluid to fuel heat exchanger, to the air to heat exchange fluid heat exchanger, and back to the heat exchange fluid to oil heat exchanger.
6. The thermal management system of claim 4 , wherein the fluid circuit is configured to circulate thermally neutral heat transfer fluid from the heat exchange fluid to oil heat exchanger, to the air to heat exchange fluid heat exchanger, to the heat transfer fluid to fuel heat exchanger, and back to the air to heat exchange fluid heat exchanger, before returning to the heat exchange fluid to oil heat exchanger.
7. The thermal management system of claim of claim 6 , further comprising a flow rate device.
8. The thermal management system of claim 7 , wherein the flow rate device is configured to vary the flow rate of the thermally neutral heat transfer fluid.