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Impact of thermal energy storage properties on solar dynamic space power conversion system mass
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Coles-Hamilton, Carolyn E. Lacy, Dovie E. Juhasz, Albert J. |
| Copyright Year | 1987 |
| Description | A 16 parameter solar concentrator/heat receiver mass model is used in conjunction with Stirling and Brayton Power Conversion System (PCS) performance and mass computer codes to determine the effect of thermal energy storage (TES) material property changes on overall PCS mass as a function of steady state electrical power output. Included in the PCS mass model are component masses as a function of thermal power for: concentrator, heat receiver, heat exchangers (source unless integral with heat receiver, heat sink, regenerator), heat engine units with optional parallel redundancy, power conditioning and control (PC and C), PC and C radiator, main radiator, and structure. Critical TES properties are: melting temperature, heat of fusion, density of the liquid phase, and the ratio of solid-to-liquid density. Preliminary results indicate that even though overalll system efficiency increases with TES melting temperature up to 1400 K for concentrator surface accuracies of 1 mrad or better, reductions in the overall system mass beyond that achievable with lithium fluoride (LiF) can be accomplished only if the heat of fusion is at least 800 kJ/kg and the liquid density is comparable to that of LiF (1880 kg/cu m. |
| File Size | 628784 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870013369 |
| Archival Resource Key | ark:/13960/t4bp4zs28 |
| Language | English |
| Publisher Date | 1987-01-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Propulsion And Power Solar Collectors Brayton Cycle Heat Exchangers Melting Points Heat of Fusion Solar Generators Power Conditioning Mass Stirling Cycle Spacecraft Radiators Heat Storage Solar Energy Solar Dynamic Power Systems Heat Sinks Energy Conversion Efficiency 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 |
