Back to results
US 12,729,644 B2Granted
Gas turbine engine
AssigneeROLLS-ROYCE plc
InventorsMartin K. Yates, Michael C. Willmot
Life of this patent
Estimating the term…
Abstract
A fuel system for a hydrogen fuelled gas turbine engine comprises a tank configured to store hydrogen, a pump configured to provide pressurised hydrogen at an outlet thereof, and a pre-heater configured to heat at least a portion of pressurised hydrogen fuel downstream of the pump. A preheater return offtake is configured to return at least a portion of hydrogen fuel heated by the preheater to the tank.
Claims13
A fuel system for a hydrogen fueled gas turbine engine comprising:
- a tank configured to store hydrogen;
- a plurality of pumps provided in series configured to provide pressurised hydrogen at an outlet thereof;
- a pump return offtake configured to divert a portion of fuel from an outlet of the pump to the tank and wherein the pump return offtake is provided downstream of at least a first hydrogen pump outlet, and upstream of a further hydrogen pump inlet;
- a pre-heater configured to heat at least a portion of pressurised hydrogen fuel downstream of the plurality of pumps;
- and
- a preheater return offtake configured to return at least a portion of hydrogen fuel heated by the preheater to the tank;
- wherein the fuel system comprises a mixer configured to mix flow from the preheater return offtake and pump return offtake prior to return of the mixed flow to the tank.
4 more elements
Dependencies are inferred from the claim text.