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Closed brayton cycle power conversion unit for fission surface power phase i final report
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Fuller, Robert L. |
| Copyright Year | 2010 |
| Description | A Closed Brayton cycle power conversion system has been developed to support the NASA fission surface power program. The goal is to provide electricity from a small nuclear reactor heat source for surface power production for lunar and Mars environments. The selected media for a heat source is NaK 78 with water as a cooling source. The closed Brayton cycle power was selected to be 12 kWe output from the generator terminals. A heat source NaK temperature of 850 K plus or minus 25 K was selected. The cold source water was selected at 375 K plus or minus 25 K. A vacuum radiation environment of 200 K is specified for environmental operation. The major components of the system are the power converter, the power controller, and the top level data acquisition and control unit. The power converter with associated sensors resides in the vacuum radiation environment. The power controller and data acquisition system reside in an ambient laboratory environment. Signals and power are supplied across the pressure boundary electrically with hermetic connectors installed on the vacuum vessel. System level analyses were performed on working fluids, cycle design parameters, heater and cooling temperatures, and heat exchanger options that best meet the needs of the power converter specification. The goal is to provide a cost effective system that has high thermal-to-electric efficiency in a compact, lightweight package. |
| File Size | 7722807 |
| Page Count | 75 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100026654 |
| Archival Resource Key | ark:/13960/t0xq2077p |
| Language | English |
| Publisher Date | 2010-06-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Power Converters Vacuum Cost Effectiveness Data Acquisition Fluid Flow Working Fluids Closed Cycles Hermetic Seals Brayton Cycle Heat Exchangers Fission 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 |
