Book excerpt: This book presents a very useful and valuable collection of chapters associated with recent developments in energy, environment, and nanotechnology including nanofluids dynamics. The book provides insights related to various forms of nanotechnological applications in green buildings, environmental and electrochemical systems, solar distillation systems, green energy, storage tank of the solar water heating systems, solar concentrator system's receiver, solar adsorption refrigeration system, and CFD simulations of various aspects of nanofluids/hybrid nanofluids, which are particularly useful, valuable for the betterment of society, culture, and ultimately mankind.