1976 NASA SPS Engineering and Economic Analysis Summary

Figure 5-2. Solar photovoltaic SPS configuration options. that minimizes thermal losses and focuses incoming solar rays to appropriate surfaces for absorption; and a thermionic conversion system that operates at high temperature (approximately 1815°C) in combination with a Brayton cycle conversion system that operates at low temperature (approximately 1038°C). Overall dimensions of this configuration for production of 10 GW of power are

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