US 12,234,020 B2
System for combined dihydrogen heating and fluid cooling for an aircraft, and aircraft comprising such a system
Nandakumar Devasigamani, Toulouse (FR); Darren Paget, Toulouse (FR); and Jorge Carretero Benignos, Taufkirchen (DE)
Assigned to AIRBUS SAS, Blagnac (FR); and AIRBUS OPERATIONS SAS, Toulouse (FR)
Filed by Airbus SAS, Blagnac (FR); and Airbus Operations SAS, Toulouse (FR)
Filed on Nov. 23, 2022, as Appl. No. 17/993,158.
Claims priority of application No. 2112637 (FR), filed on Nov. 29, 2021.
Prior Publication US 2023/0166847 A1, Jun. 1, 2023
Int. Cl. B64D 13/08 (2006.01); B64D 37/30 (2006.01); B64D 13/06 (2006.01)
CPC B64D 13/08 (2013.01) [B64D 37/30 (2013.01); B64D 2013/0614 (2013.01); B64D 2013/0659 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for combined cooling and heating in an aircraft, the aircraft comprising an engine configured to use dihydrogen as fuel, the dihydrogen being stored in liquid form in a tank and being used in gas form in the engine, the engine being a turboprop, the dihydrogen being conveyed from the tank to the engine by means of a main pipe, wherein the method comprises:
branching off a part of the flow of dihydrogen in a bypass pipe, such that the bypass pipe is in parallel with a predefined segment of the main pipe between an inlet of the bypass pipe and an outlet of the bypass pipe,
circulating a first heat transfer fluid in a first closed circuit,
carrying out a first heat exchange between the first heat transfer fluid and the dihydrogen circulating in the bypass pipe,
returning the part of the flow of dihydrogen in the bypass pipe via the outlet of the bypass pipe to the main pipe upstream of the engine, and
carrying out at least one secondary heat exchange, each secondary heat exchange being carried out between the first heat transfer fluid and a working fluid that is used in the aircraft and needs to be cooled, wherein the working fluid is oil for lubricating the engine,
wherein the first closed circuit comprises, successively in a direction of circulation of the first heat transfer fluid, a first secondary heat exchanger, allowing heat exchange with the oil for lubricating the engine, and then a second secondary heat exchanger allowing heat exchange with compressed air that comes from an air conditioning system of the aircraft, the first secondary heat exchanger and the second secondary heat exchanger being connected in series in this order.