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The world’s energy demand is still growing, partly due to the rising population, partly to increasing personal needs. This growing demand has to be met without increasing (or preferably, by decreasing) the environmental impact. One of the ways to do so is the use of existing low-temperature heat sources for producing electricity, such as using power plants based on the organic Rankine cycle (ORC) . In ORC power plants, instead of the traditional steam, the vapor of organic materials (with low boiling points) is used to turn heat to work and subsequently to electricity. These units are usually less efficient than steam-based plants; therefore, they should be optimized to be technically and economically feasible. The selection of working fluid for a given heat source is crucial; a particular working fluid might be suitable to harvest energy from a 90 ℃ geothermal well but would show disappointing performance for well with a 80 ℃ head temperature. The ORC working fluid for a given heat source is usually selected from a handful of existing fluids by trial-and-error methods; in this collection, we demonstrate a more systematic method based on physical and chemical criteria.
adiabatic expansion --- isentropic expansion --- T-s diagram --- working fluid classification --- optimization --- single-screw expander --- vapor–liquid two-phase expansion --- thermal efficiency --- net work output --- heat exchange load of condenser --- cis-butene --- HFO-1234ze(E) --- ORC working fluids --- temperature–entropy saturation curve --- saturation properties --- wet and dry fluids --- ideal-gas heat capacity --- Rankine cycle --- ORC --- biomass --- fluid mixtures --- hydrocarbons --- working fluid --- selection method --- volumetric expander --- thermodynamic analysis --- wet zeotropic mixture --- single screw expander --- organic Rankine cycle --- R441A --- R436B --- R432A --- T–s diagram --- molecular degree of freedom
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This book focuses on the progress in modern energy processes, systems and equipment. Since the beginning of humankind, energy has been the most important need for each human and living being. Thus, the development of different ways of energy conversion that can be applied to cover growing energy needs has become a crucial challenge for scientists and engineers around the world, making the power industry, in which operation is based on subsequent energy conversion processes, one of the most important fields of the local, national, and global economy today. Progress in precise description, modeling, and optimization of physical phenomena related to the energy conversion processes bounded to large and dispersed power systems is a key research and development field of the economy.
fuel burners --- asphalt roofing --- heating equipment --- biogas treatment --- volatile methylsiloxanes --- siloxane concentrations --- adsorbents --- regeneration --- biogas --- deep eutectic solvents --- upgrading --- absorption --- COSMO-RS --- economic analysis --- air pollution --- PM2.5 dust --- ORC --- working fluid --- selection method --- volumetric expander --- thermodynamic analysis --- lignite mine --- PM2.5 --- PM10 --- WRF-CALMET/CALPUFF --- health risk --- grill --- barbecue --- stove --- boiler --- charcoal briquettes --- liquid propane --- particulate matter --- gaseous air pollutants --- energy performance gap --- user behavior --- energy poverty --- pre-war tenement building --- Trilateral Flash Cycle --- T-s diagram --- adiabatic expansion --- retrofit --- CO2 power cycle --- low-temperature phase change material --- paraffin wax --- thermal energy storage --- numerical modelling --- scanning electron microscope --- microturbine --- stirling engine --- fuel cell --- expander --- vane --- lobe --- screw --- piston --- Wankel --- gerotor --- microcogeneration --- CHP --- hydrofluoroolefins --- hydrofluorocarbons --- refrigerants --- low GWP --- energy conversion --- fuels --- energy storage --- ecological and legal aspects
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