Accession Number : AD0430127


Title :   SOLAR THERMOELECTRIC GENERATOR SYSTEM CONCEPT AND FEASIBILITY STUDY.


Descriptive Note : Final rept., Feb 62-Nov 63.


Corporate Author : WESTINGHOUSE ELECTRIC CORP LIMA OHIO


Report Date : Feb 1964


Pagination or Media Count : 239


Abstract : The feasiblity of combining concentrated solar energy, thermal storage, and a thermoelectric generator as a power supply for space applications has been proven. A nominal 14 watt model, for operation in a 300 mile earth orbit, has been fabricated, tested using electric heat input in an altitude chamber, tested using natural solar energy input in an earth atmosphere and operated on a life test. A 90 minute orbit with 55 minutes of energy input, or sunlight, and 35 minutes of darkness has been simulated. The generator produced constant power (= 7%) for the full 90 minutes. Practical factors obtained from the feasibility model testing have been incorporated into an analytical investigation of a complete system. A power-to-weight ratio of 2.4 is attainable at a power level of 70 watts using a present day 5 foot diameter collector concentrator. The system efficiency (power output from the generator vs. solar energy intercepted) of 4.3% is produced with a thermopile producing 13 watts per pound. Thirty eight (38) per cent of the system weight is provided by the collector concentrator. (Author)


Descriptors :   *THERMOELECTRICITY , *POWER SUPPLIES , GENERATORS , SOLAR RADIATION , ELECTRIC POWER PRODUCTION , FEASIBILITY STUDIES , LITHIUM COMPOUNDS , HYDRIDES , THERMOCOUPLES , MODEL TESTS , PERFORMANCE(ENGINEERING) , FAILURE(MECHANICS) , HIGH TEMPERATURE , SCIENTIFIC RESEARCH , VOLTAGE , ELECTRIC CURRENT , ELECTRICAL RESISTANCE , THERMAL RADIATION , OPTIMIZATION , RADIATORS(HEATING AND COOLING) , LIFE EXPECTANCY(SERVICE LIFE) , SPACE PROPULSION


Distribution Statement : APPROVED FOR PUBLIC RELEASE