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This book provides a technical overview of low-cost§parabolic trough collector (PTCs) prototypes for low-temperature heat demand.§It begins with a comprehensive but concise summary of the state-of-the-art in§PTCs, and presents a detailed mathematical model of such systems. Subsequent§chapters describe the construction and materials used in the manufacture of PTC§prototypes, and offers technical solutions to overcome design problems.§Finally, it provides an accessible guide to the standards used to test and§evaluate the performance of PTCs. Offering a valuable resource to engineering§researchers and practitioners, it is also suitable for students of solar§thermal systems, renewable energy and applied physics.§§