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This factual and occasionally philosophical book examines the intimate relations between mankind and energy. The major goal of the volume is to provide readers with the knowledge necessary to make decisions on energy policies. The impact of energy throughout the history of man is traced. The present energy source options are described, as are the processes of energy conversion for human use, and methods to estimate future costs of energy sources. The conflicts of interest between conservationists and the power industry are discussed from a neutral perspective. Chapters are included on the following topics: Energy in Human History; How Mankind Uses Energy; Sources of Energy; Energy and Economics; New Fuels from Old...
Two-thirds of input energy for electricity generation in the USA is lost as heat during conversion processes. Additionally, 12.5% of primary fuel and 20.3% of electricity are employed for space heating, water heating, and refrigeration where low-grade heat could suffice. The potential for harnessing waste heat from power generation and thermal processes to perform such tasks is assessed. By matching power plant outlet streams with applications at corresponding temperature ranges, sufficient waste heat is identified to satisfy all USA space and water heating needs. Sufficient high temperature exhaust from power plants is identified to satisfy 27% of residential air conditioning with thermally activated refrigeration,...