Comparison of GaAs and Si hybrid solar power systems. [Hybrid system for producing electric power and thermal power for heating or air conditioning]
- Old Dominion Univ., Norfolk, VA
Various silicon hybrid systems are modeled and compared with a gallium arsenide hybrid system. The hybrid systems modeled produce electric power and also thermal power which can be used for heating or air conditioning. Various performance indices are defined and are used to compare the system performance. The performance indices are: capital cost per unit electric power out; capital cost per total power out; capital cost per unit electric power plus mechanical power; annual cost per unit electric energy; and annual cost per unit electric plus mechanical work. These performance indices indicate that concentrator hybrid systems can be cost effective when compared with present day energy costs. Realistic costs and efficiencies of GaAs and Si are respectively $35,000/m/sup 2/ for 15 percent efficient solar cells and $1000/m/sup 2/ for 10 percent efficient solar cells based on information available at the time of this study in late 1975. The performance indices show that the limiting values for annual costs are 10.3 cents/kWh and 6.8 cents/kWh for Si and GaAs, respectively. Results demonstrate that for a given flow rate there is an optimal operating condition for maximum photovoltaic output associated with concentrator systems. Also concentrator hybrid systems produce a distinct cost advantage over flat hybrid systems. 35 references.
- OSTI ID:
- 5445666
- Journal Information:
- Sol. Energy; (United States), Vol. 19:3
- Country of Publication:
- United States
- Language:
- English
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GALLIUM ARSENIDE SOLAR CELLS
HYBRID SYSTEMS
PERFORMANCE
SILICON SOLAR CELLS
SOLAR AIR CONDITIONERS
SOLAR HEATING SYSTEMS
COMPARATIVE EVALUATIONS
CONCENTRATING COLLECTORS
COST
EFFICIENCY
SOLAR COLLECTORS
AIR CONDITIONERS
APPLIANCES
DIRECT ENERGY CONVERTERS
ELECTRIC APPLIANCES
GAS APPLIANCES
HEATING SYSTEMS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SOLAR CELLS
SOLAR COOLING SYSTEMS
140501* - Solar Energy Conversion- Photovoltaic Conversion
141000 - Solar Collectors & Concentrators
140901 - Solar Thermal Utilization- Space Heating & Cooling