Physics Considerations of Solar Energy Conversion

1984 ◽  
Vol 106 (1) ◽  
pp. 3-15 ◽  
Author(s):  
A. F. Haught
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiant Energy ◽  
Solar Energy Conversion ◽  
Quantum Processes ◽  
Maximum Conversion ◽  
Energy Conversion Systems ◽  
Maximum Conversion Efficiency

A comparative analysis is presented of the conversion of radiant energy to useful work by thermal and quantum processes. The operation of thermal and quantum converters and the thermodynamic conversion efficiency of each are developed in terms of the mechanism of radiation-matter interaction in thermal and quantum systems. From the analysis the maximum conversion efficiency of a single-collector thermal converter with unconcentrated solar radiation and an ambient (reservoir) temperature of 300 K is 0.540; for the same conditions the maximum conversion efficiency of a single-collector quantum system is 0.309. The analysis is extended to consider the effects on the conversion efficiency of heat reject temperature, cascaded operation, in which the reject heat of the quantum converter is used as the input to a thermal bottoming cycle, and of concentration of the solar radiation. The results obtained represent the thermodynamic limits for radiant energy conversion by thermal and quantum processes, and calculations with solar input serve as a reference against which to judge the performance and capabilities of prospective solar energy conversion systems.

scholarly journals Artificial neural network and neuro fuzzy inference modelling of global solar radiation data using bayesian algorithm for design of solar energy conversion system

2018 ◽  
Vol 7 (2.21) ◽  
pp. 88
Author(s):  
S Shanmuga Priya ◽  
Lisa Maria Ubbenjans ◽  
I Thirunavukkarasu
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Fuzzy Inference ◽  
Solar Energy Conversion ◽  
Global Solar Radiation ◽  
Weather Data ◽  
Applied Model ◽  
Energy Conversion Systems ◽  
Inference Systems

Measurement of global solar radiation is particularly required for proper design of solar energy conversion systems. This study investigates the use of software tools like neural networks and fuzzy inference systems for modelling so as to predict global solar radiation using different input parameters based on available weather data. Advantages include simplicity, speed and efficiency, to make short term predictions of global solar radiation at different locations in India, Germany and United Kingdom. It helps in estimation of effectiveness of the applied model which matches solar radiation and other meteorological parameters which are in a non-linear relationship. Bayesian Inference algorithm is used for the current study in estimation of global solar radiation.  

The Second Law Efficiency of Solar Energy Conversion

1984 ◽  
Vol 106 (1) ◽  
pp. 16-21 ◽  
Author(s):  
J. A. Gribik ◽  
J. F. Osterle
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Blackbody Radiation ◽  
Second Law ◽  
Atmospheric Scattering ◽  
Maximum Conversion ◽  
Maximum Conversion Efficiency ◽  
Maximum Work ◽  
Dissipation Equation ◽  
Correct Expression

The controversy over the proper expression for the theoretical maximum conversion efficiency of solar devices is resolved. The correct expression, ηmax = 1 −4/3 (To/Ts), relates to the maximum work that can be done by a device which accepts blackbody radiation at Ts and rejects heat to the ambient at To. A general bilinear dissipation equation for solar devices is derived. The effect of back-radiation is considered, and the efficiency decrease due to atmospheric scattering is determined.

Thin-Film Multilayer Filter Designs For Hybrid Solar Energy Conversion Systems

1985 ◽  
Author(s):  
L. DeSandre ◽  
D. Y. Song ◽  
H. A. Macleod ◽  
M. R. Jacobson ◽  
D. E. Osborn
Keyword(s):  
Thin Film ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Energy Conversion Systems
Sign in / Sign up

Export Citation Format

Share Document