InTech, 2013. 202 p. - ISBN:978-953-51-0969-3This new book reveals the latest results in the research upon the direct exploitation of solar energy and incorporates seven chapters, written by twenty-four international authors with advanced personal contributions in solar energy. The authors explain their new concepts and applications in a high-level presentation, which, although very synthetic, still remains clear and easy-to-read, feature that distinguishes the new book in the present time of tight concentration of creative efforts.This book begins with the proof of the high thermal efficiency of the gravitational draught through concentrated solar heating, and continues with novel technologies of producing organic fuels through solar heating, new types of photovoltaic cells, long term use of thermal solar power plants, the efficiency of thermal storage and applications in Niger of the Solar power.
The reader will be pleasantly impressed by the accompanying drawings and pictures that ease the text assimilation and makes it an attractive practice.Contents
Preface
Proof of the Energetic Efficiency of Fresh Air, Solar Draught Power Plants
Introduction
Gravity-draught accelerator modeling
Experimental results
Design example
Turbine effect over the gravity-draught acceleration
Discussion on the equations
Discussion on denominator
Improved model
Energy output of the gravity-draught accelerator
Conclusion
Fuel Production Using Concentrated Solar Energy
Introduction
Concentrated solar fuel production methods
Concentrated solar reactors
Conclusions and outlook
Sustainability in Solar Thermal Power Plants
Introduction
Evaluation of sustainability between combined cycle power plant production and a hybrid solar-combined cycle system
Conclusions
Thin Film Solar Cells: Modeling, Obtaining and Applications
Introduction
General theoretical modeling
Solar cells with CdTe layers grown by isovalent substitution
Heterojunction CdS/PbS cells obtained by chemical bath deposition
Organic solar cells
Heating issues and their treatment
Conclusions
Physical and Technological Aspects of Solar Cells Based on Metal Oxide-Silicon Contacts with Induced Surface Inversion Layer
Introduction
Barrier height of MIS solar cells
Relation between the charge and surface potential
Surface potential of the silicon wafers after a chemical cleaning
Chemical oxide after treatment in hydrogen-peroxide
Chemical oxide fabricated with a contaminated SC-1 solution
Work function of tin-doped indium oxide (ITO) films
Fabrication of ITO and FTO films by spray pyrolysis
Characterization equipment and methods
Properties of the spray deposited ITO films
Solar cells fabrication
Properties of the solar cells
Direct evidence of minority carrier injection in ITO-Si solar cells: Bipolar transistor
Radiation emission from ITO-nSi structures
Minority-carrier injection ratio
Physical model of spray deposited ITO/n-Si solar cells
Waste-free solar modules
Conclusions
Conceptual Study of a Thermal Storage Module for Solar Power Plants with Parabolic Trough Concentrators
Introduction
The SOLTECA Project
Storage issues for renewable energies
Concrete storage
Pre-design procedure
Numerical modelling
Conclusions
Photovoltaic Water Pumping System in Niger
Introduction
Benefits of photovoltaic water pumping system
Photovoltaic pumping system
Solar radiation at Niger
Sizing a photovoltaic water pumping system
Case study
Conclusion
