Advanced power generation systems by İbrahim Dinçer; Calin Zamfirescu

By İbrahim Dinçer; Calin Zamfirescu

Advanced strength iteration Systems examines the whole variety of complicated a number of output thermodynamic cycles that could permit extra sustainable and effective strength creation from conventional tools, in addition to using the numerous earnings to be had from renewable assets. those complicated cycles can harness the by-products of 1 strength new release attempt, similar to electrical energy construction, to at the same time create extra strength outputs, equivalent to warmth or refrigeration. gasoline turbine-based, and business waste warmth recovery-based mixed, cogeneration, and trigeneration cycles are thought of intensive, besides Syngas combustion engines, hybrid SOFC/gas turbine engines, and different thermodynamically effective and environmentally unsleeping new release applied sciences. The makes use of of solar energy, biomass, hydrogen, and gas cells in complex energy iteration are thought of, inside either hybrid and devoted platforms.

The unique power and exergy research of every kind of method supplied by means of globally well-known writer Dr. Ibrahim Dincer will tell potent and effective layout offerings, whereas emphasizing the pivotal function of recent methodologies and types for functionality evaluate of current structures. This distinct source gathers info from thermodynamics, fluid mechanics, warmth move, and effort procedure layout to supply a single-source consultant to fixing useful strength engineering problems.

  • The in simple terms whole resource of information frequently array of a number of output thermodynamic cycles, protecting the entire layout ideas for environmentally-conscious mixed creation of electrical energy, warmth, and refrigeration
  • Offers an important guide on figuring out extra potency in conventional strength new release platforms, and on imposing renewable applied sciences, together with sunlight, hydrogen, gas cells, and biomass
  • Each cycle description clarified via schematic diagrams, and associated with sustainable improvement eventualities via exact strength, exergy, and potency analyses
  • Case reports and examples exhibit how novel platforms and function review tools functionality in practice

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Based on its definition, the coefficient of performance is COP ¼ QH QH ¼ W QC + W ð1:28Þ The Carnot cycle is a fundamental model in thermodynamics representing a heat engine (or heat pump) that operates between a heat source and a heat sink, both of them being at constant temperature. This cycle is a conceptual (theoretical) cycle and was proposed by Sadi Carnot in 1824. The cycle comprises fully reversible processes, namely two adiabatic and two isothermal processes. 12 illustrates two Carnot cycles for air, modeled as ideal gas: (a) is a power cycle, and (b) is a reversed (refrigeration or heat pump) cycle.

The chemical equilibrium of a closed system is obtained when DG ¼ m Dg ¼ 0 In addition, Gibbs free energy can be used to determine the maximum work related to chemical processes. 5 EXERGY wmax ¼ exch H2 ¼ gH2 ðT0 , P0 Þ + 0:5gO2 ðT0 , yO2 P0 Þ À gH2 O ðT0 , yH2 O P0 Þ ð1:40Þ where it is taken into account that for work to be maximum the process must be reversible. Therefore, sgen ¼ 0. 5O2 ! 12 kJ/mol. Thus, chemical exergy of hydrogen can be calculated as follows: exch H2 ¼ ÀðÀ237:12Þ À 0:5  3:95 + 8:67 ¼ 243:8 kJ/mol.

Keeping in mind that Exd,surr ¼ Exlost the exergy utilization factor can be defined with the following equation: Exlost f ¼1À Excons The exergy utilization factor takes values between 0 and 1. When f ¼ 1 the source exergy is fully utilized by the power generation system; in this case the exergy destruction at system interaction with the surroundings is not existent: Exd,surr ¼ Exlost ¼ 0. Otherwise there are losses associated due to the interaction of the system with the surroundings. These losses reflect the incapacity of the system to utilize the source exergy integrally.

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