公开(公告)号：US20230280032A1

公开(公告)日：2023-09-07

申请号：US18176784

申请日：2023-03-01

Applicant: ROLLS-ROYCE plc

Inventor： Nathan CLARK ,  Robert J. MILLER ,  Chloe J PALMER ,  Jacopo TACCONI

IPC: F23R3/00 ,  F02C7/224 ,  F02C7/36

CPC classification number: F23R3/005 ,  F02C7/224 ,  F02C7/36 ,  F05D2260/40311

Abstract: A combined cycle engine is formed of a gas turbine cycle coupled with a fuel expansion cycle in which fuel for the gas turbine cycle is the working fluid of the fuel expansion cycle. The fuel expansion cycle comprises, in flow series, a fuel pump for pumping a cryogenic fuel for the gas turbine cycle, a first heat exchanger for heating the fuel, an expander to recover power by expansion of the fuel and to thereby drive a load, and a second heat exchanger to reheat the fuel. The gas turbine cycle comprises, in flow series, a compressor, a combustor for combustion of reheated fuel delivered from the second heat exchanger, and a turbine configured to drive the compressor. The first heat exchanger and the second heat exchanger are stationed downstream of the combustor and configured to transfer heat from combustion products to the fuel in the fuel expansion cycle.

公开(公告)号：US20240229711A9

公开(公告)日：2024-07-11

申请号：US18379728

申请日：2023-10-13

Applicant: ROLLS-ROYCE PLC

Inventor： Nicholas GRECH ,  Chloe J. PALMER ,  Jacopo TACCONI

IPC: F02C6/04 ,  F02C7/224 ,  F02C9/40 ,  H01M8/04111

CPC classification number: F02C6/04 ,  F02C7/224 ,  F02C9/40 ,  H01M8/04111 ,  F05D2220/323 ,  F05D2220/50 ,  H01M2250/20 ,  H01M2250/407

Abstract: A combined gas turbine engine and hydrogen fuel cell system includes a hydrogen fuelled gas turbine engine, a cryogenic liquid hydrogen fuel tank, a first fuel offtake configured and arranged to divert a portion of hydrogen fuel from a main fuel conduit, a burner configured and arranged to burn the portion of hydrogen fuel diverted from the main fuel conduit, a heat exchanger configured and arranged to transfer heat from exhaust gasses produced by the burner to hydrogen fuel in the main fuel conduit, a second fuel offtake arranged to divert a portion of hydrogen fuel from the main fuel conduit downstream of the heat exchanger, and a hydrogen fuel cell configured and arranged to produce electric power using hydrogen fuel diverted from the second fuel offtake.

公开(公告)号：US20240229717A9

公开(公告)日：2024-07-11

申请号：US18379717

申请日：2023-10-13

Applicant: ROLLS-ROYCE PLC

Inventor： Chloe J. PALMER ,  Jacopo TACCONI ,  Nicholas GRECH

IPC: F02C7/224 ,  F02C3/22 ,  F02C7/14

CPC classification number: F02C7/224 ,  F02C3/22 ,  F02C7/14

Abstract: A gas turbine engine fuel system includes a fuel offtake configured to divert a portion of hydrogen fuel from a main fuel conduit, a burner configured to burn the portion of hydrogen fuel diverted from the main fuel conduit, a heat exchanger configured to transfer heat from exhaust gasses produced by the burner to hydrogen fuel in the main fuel conduit and a power recovery device configured to extract power from exhaust gasses of the burner downstream of the heat-exchanger.

公开(公告)号：US20240133343A1

公开(公告)日：2024-04-25

申请号：US18379717

申请日：2023-10-12

Applicant: ROLLS-ROYCE PLC

Inventor： Chloe J. PALMER ,  Jacopo TACCONI ,  Nicholas GRECH

IPC: F02C7/224 ,  F02C3/22 ,  F02C7/14

CPC classification number: F02C7/224 ,  F02C3/22 ,  F02C7/14

Abstract: A gas turbine engine fuel system includes a fuel offtake configured to divert a portion of hydrogen fuel from a main fuel conduit, a burner configured to burn the portion of hydrogen fuel diverted from the main fuel conduit, a heat exchanger configured to transfer heat from exhaust gasses produced by the burner to hydrogen fuel in the main fuel conduit and a power recovery device configured to extract power from exhaust gasses of the burner downstream of the heat-exchanger.

公开(公告)号：US20240133340A1

公开(公告)日：2024-04-25

申请号：US18379728

申请日：2023-10-12

Applicant: ROLLS-ROYCE PLC

Inventor： Nicholas GRECH ,  Chloe J. PALMER ,  Jacopo TACCONI

IPC: F02C6/04 ,  F02C7/224 ,  F02C9/40 ,  H01M8/04111

CPC classification number: F02C6/04 ,  F02C7/224 ,  F02C9/40 ,  H01M8/04111 ,  F05D2220/323 ,  F05D2220/50 ,  H01M2250/20 ,  H01M2250/407

Abstract: A combined gas turbine engine and hydrogen fuel cell system includes a hydrogen fuelled gas turbine engine, a cryogenic liquid hydrogen fuel tank, a first fuel offtake configured and arranged to divert a portion of hydrogen fuel from a main fuel conduit, a burner configured and arranged to burn the portion of hydrogen fuel diverted from the main fuel conduit, a heat exchanger configured and arranged to transfer heat from exhaust gasses produced by the burner to hydrogen fuel in the main fuel conduit, a second fuel offtake arranged to divert a portion of hydrogen fuel from the main fuel conduit downstream of the heat exchanger, and a hydrogen fuel cell configured and arranged to produce electric power using hydrogen fuel diverted from the second fuel offtake.

公开(公告)号：US20240379977A1

公开(公告)日：2024-11-14

申请号：US18701722

申请日：2022-10-04

Applicant: ROLLS-ROYCE plc

Inventor： Chloe PALMER ,  Jacopo TACCONI

IPC: H01M8/04082 ,  B64D27/355 ,  H01M8/04007 ,  H01M8/04014 ,  H01M8/04111 ,  H01M8/10

Abstract: A fuel cell system includes a fuel pre-heater, a fuel cell stack and a cooling circuit which is arranged to implement a Rankine cycle and includes a condenser. The fuel pre-heater is arranged to heat a flow of liquid hydrogen provided to an input thereof to provide a flow of gaseous hydrogen. The system further includes a conveying apparatus arranged to convey the gaseous hydrogen to a fuel input of the fuel cell stack such that the gaseous hydrogen is in thermal contact with coolant fluid in the condenser. The size and mass of the condenser may thereby be reduced. The pre-heater is arranged to heat coolant fluid within the cooling circuit, thereby increasing the efficiency of the Rankine cycle.

公开(公告)号：US20240328359A1

公开(公告)日：2024-10-03

申请号：US18609514

申请日：2024-03-19

Applicant: ROLLS-ROYCE plc

Inventor： Nicholas GRECH ,  Matthew J. WILLSHEE ,  Jacopo TACCONI

IPC: F02C7/224 ,  B64D37/30 ,  B64D37/34 ,  F02C3/22

CPC classification number: F02C7/224 ,  B64D37/30 ,  B64D37/34 ,  F02C3/22 ,  F05D2220/323 ,  F05D2260/213

Abstract: A propulsive aircraft gas turbine engine comprises a turbine disposed in a gas turbine engine core flow and a recuperator heat exchanger disposed downstream of the turbine in gas turbine engine core flow, the recuperator heat exchanger being configured to transfer heat from the gas turbine engine core flow to gas turbine engine fuel. The recuperator heat exchanger is configured to accommodate a portion of the gas turbine engine core flow therethrough, the remainder being bypassed around the recuperator heat exchanger.

公开(公告)号：US20230391467A1

公开(公告)日：2023-12-07

申请号：US18184804

申请日：2023-03-16

Applicant: ROLLS-ROYCE plc

Inventor： Chloe Jo PALMER ,  Jacopo TACCONI

IPC: B64D37/30 ,  B64D27/10 ,  F02C7/18 ,  H01M8/04111 ,  H01M8/04007 ,  H01M8/04082

CPC classification number: B64D37/30 ,  B64D27/10 ,  F02C7/18 ,  H01M8/04111 ,  H01M8/04074 ,  H01M8/04208 ,  F05D2260/232 ,  H01M2250/20

Abstract: A hydrogen-fuelled aircraft power system incorporates a gas turbine engine and a fuel cell, in which air supply and cooling of the fuel cell is integrated with the gas turbine engine to improve overall efficiency of the power system. The system may be part of a turbofan, turboprop or electric propulsion system for an aircraft.