High-temperature ceramic heat exchanger
Abstract
A ceramic heat exchanger for operation with a small, closed Brayton cycle engine was developed which operates with 3000 F combustion products on one side and heats high pressure Argon gas, which subsequently is delivered to the turbine, to 1800 F. A materials test program encompassing strength tests, cyclic fatigue tests, and stress rupture tests from room temperature to a maximum of 2950 F was conducted on various silicon carbide test specimens. Complete heat exchanger modules were produced and tested under simulated engine operating conditions up to 2300 F tube wall temperatures. The design consisting of an array of siliconized silicon carbide U tube modules employing 180, 1 inch diameter finned tubes was selected.
- Publication:
-
Final Report AiResearch Mfg. Co
- Pub Date:
- July 1979
- Bibcode:
- 1979amc..reptR....C
- Keywords:
-
- Ceramics;
- Heat Exchangers;
- High Temperature;
- Manometers;
- Silicon Carbides;
- Structural Design;
- Argon;
- Brayton Cycle;
- Creep Rupture Strength;
- Fatigue Tests;
- Turbine Engines;
- Fluid Mechanics and Heat Transfer