Recent advances in solar dynamic power for space
Conference
·
OSTI ID:7001814
The development of a hybrid power system for the Space Station is discussed. The hybrid system consists of photovoltaic modules, solar dynamic modules, and power management and distribution subsystems; the design and components of the modules and subsystems are described. The capabilities of closed Brayton cycle (CBC) and organic Rankine cycle (ORC) solar receivers are examined. The behavior of phase-change materials (PCMs) for ORC and CBC is characterized. It is observed that LiOH with a melting point of 471 C is appropriate for an ORC that operates in the 399 C range, and the LiOH which has a heat fusion of 877 kJ/g can be contained with Ni and Ni-Cr alloys. A mixture of CaF2-LiF was selected for CBC which operates at 732 C; the salt mixture has a melting point of 768 C, a heat fusion of 791 kJ/kg, and can be contained with Ni-Cr and Co-base alloys. Large-scale system tests with PCMs in cylindrical canisters were conducted using a parabolic concentrator to evaluate thermodynamic performance in a LEO environment. The data reveal that the PCM can convert the sunlight of LEO to the constant energy stream necessary for dynamic engine operation.
- OSTI ID:
- 7001814
- Report Number(s):
- AIAA-Paper-86-2350; CONF-8609175-
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
140704* -- Solar Thermal Power Systems-- Total Energy & Hybrid Systems-- (1980-)
BRAYTON CYCLE
CONCENTRATORS
CONVERSION
DESIGN
DIRECT ENERGY CONVERSION
ENERGY CONVERSION
ENERGY STORAGE
EQUIPMENT
HYBRID SYSTEMS
MATERIALS
PHASE CHANGE MATERIALS
PHOTOVOLTAIC CONVERSION
RANKINE CYCLE
SOLAR CELL ARRAYS
SOLAR EQUIPMENT
STORAGE
THERMODYNAMIC CYCLES
USES
140704* -- Solar Thermal Power Systems-- Total Energy & Hybrid Systems-- (1980-)
BRAYTON CYCLE
CONCENTRATORS
CONVERSION
DESIGN
DIRECT ENERGY CONVERSION
ENERGY CONVERSION
ENERGY STORAGE
EQUIPMENT
HYBRID SYSTEMS
MATERIALS
PHASE CHANGE MATERIALS
PHOTOVOLTAIC CONVERSION
RANKINE CYCLE
SOLAR CELL ARRAYS
SOLAR EQUIPMENT
STORAGE
THERMODYNAMIC CYCLES
USES