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Spacecraft radiator freeze protection using a regenerative heat exchanger
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ungar, Eugene K. Schunk, Richard G. |
| Copyright Year | 2011 |
| Description | An active thermal control system architecture has been modified to include a regenerative heat exchanger (regenerator) inboard of the radiator. Rather than using a radiator bypass valve a regenerative heat exchanger is placed inboard of the radiators. A regenerator cold side bypass valve is used to set the return temperature. During operation, the regenerator bypass flow is varied, mixing cold radiator return fluid and warm regenerator outlet fluid to maintain the system setpoint. At the lowest heat load for stable operation, the bypass flow is closed off, sending all of the flow through the regenerator. This lowers the radiator inlet temperature well below the system set-point while maintaining full flow through the radiators. By using a regenerator bypass flow control to maintain system setpoint, the required minimum heat load to avoid radiator freezing can be reduced by more than half compared to a radiator bypass system. |
| File Size | 313506 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110012266 |
| Archival Resource Key | ark:/13960/t20c9z023 |
| Language | English |
| Publisher Date | 2011-03-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Control Systems Design Spacecraft Radiators Cooling Systems Valves Regenerators Temperature Control Heat Exchangers Active Control Regenerative Cooling Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
