Heat transfer arrangements and methods of making heat transfer arrangements
A heat transfer arrangement includes two or more heat transfer cells. The heat transfer cells together define a boundary between a higher temperature region and a lower temperature region. Each of the two or more heat transfer cells includes two or more walls defining a fluid tight cavity. One or more wick is fused to an inner surface of one or more of the walls to wick liquid from a lower temperature portion of the cavity to a higher temperature portion of the cavity. Combustors having heat transfer arrangements with heat transfer cells and methods of making heat transfer arrangements are also described.
1. A method of making a heat transfer arrangement, comprising:
densely sintering a first portion of a powdered material to form a plurality of walls that define a fluid tight cavity of a heat transfer cell; and
porously sintering a second portion of the powdered material to form a wick fused to at least one of the plurality of walls.
2. The method as recited in claim 1 , further comprising:
fusing the wick to at least one of the plurality of walls;
removing powdered material from the fluid-tight cavity;
introducing a heat transfer fluid into the fluid-tight cavity; and
sealing the fluid-tight cavity from the environment external of the heat transfer cell.
3. The method as recited in claim 1 , wherein the plurality of walls includes a hot side wall.
4. The method of claim 1 , further comprising extending the at least one wick over a side wall of the heat transfer cell.
5. The method of claim 1 , wherein the at least one wick has a uniform thickness.
6. The method of claim 1 , wherein at least a portion of a cold side wall is not in contact with the at least one wick.