Nomenclature Description of solar thermal systems Modelling of solar thermal system components and simulation procedure Economic analysis Estimation of solar radiation Long-term performance of solar collectors Application of utilizability methods to solar thermal system performance determination Prediction of solar thermal system performance by the empirical correlation approach Design of solar thermal systems by the simplified analytical approach Prediction of solar thermal system performance by the simplified system simulation approach using one-repetitive-day methods Concluding remarks on design methods and solar thermal systems Appendix A: Sun-earth astronomical concepts and relations Appendix B: Long-term performance of concentrating solar collectors Appendix C: Solar thermal systems for hot-air applications Appendix D: Meteorological data for selected locations of the world Appendix E: Development of a solar computer package Appendix F: Useful conversion factors.