Parabolic Trough Solar Collectors: Thermal and Hydraulic Enhancement Using Passive Techniques and Nanofluids systematically and methodically examines all aspects of the essential and basic elements of parabolic trough solar collector (PTSC) design and performance enhancement techniques. The book provides thorough optical, thermal, and exergetic analyses along with a review of experimental and numerical studies performed on thermal augmentation methods, which includes the use of conventional fluids and advanced fluids such as nanofluids and hybrid nanofluids in PTSC. Moreover, the use of passive techniques, turbulators, and surface modifications with different shapes and configurations associated with PTSC is presented. The PTSC’s thermal efficiency augmentation estimation with the utilization of different fluids (i.e. conventional or advanced fluids) is summarized and analyzed in each case study, and the ongoing patterns in hybrid nanofluid utilization are provided. Given the interdisciplinary nature of renewable energy systems design, this comprehensive reference will be an invaluable resource for engineering and industrial professionals involved in energy engineering design, power plant design, and solar energy systems design. Presents all state-of-the-art aspects of PTSC design and implementation; Hands-on reference for anyone involved in renewable energy systems design; Includes case studies.
A sociologist examines the history of Egypt from the pharaohs to the present, shedding light on its cultural deterioration and the dilemmas it faces today. The story of Egypt’s long history is one of gradual descent from a wealthy, organized, sophisticated society to its contemporary milieu of corruption and poverty. For more than four thousand years, it earned the moniker om el donya, mother of the world. But when Cleopatra died, the independent rule of the pharaohs died with her. This seismic event not only transferred power to Rome, but also shattered the foundations of Egyptian society. For the following two millennia, a succession of foreign occupations and despotic rulers undermined Egypt’s national identity. They exported her wealth, imported a new language and culture, and spawned social values that are inimical to the very notion of modernity. Understanding these developments provides one possible route to getting a handle on the social and cultural situation in Egypt today.
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