An overview of advanced space/terrestrial power generation device: AMTEC

Lodhi, M. A. K.; Vijayaraghavan, Prasanna; Daloglu, Ayse T.

doi:10.1016/s0378-7753(01)00813-8

Cited by 44 publications

(9 citation statements)

References 21 publications

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“…P sat ðTÞ ¼ 10 9:678À5383:2=T being the T-dependent saturation vapor pressure [47], V R denotes the ionic BASE voltage, V ac is the over potential difference, J stands for the current density of the Na-TEC, M and L denote, respectively, the sodium molecular weight and vaporization latent heat, A E corresponds to the electrode area, c P means the molar specific heat, z indicates the radiation reduction factor, s denotes the Stefan-Boltzmann constant, F is the Faraday constant, m denotes a superficial electrolyte coefficient, fx5 stands for the charge-exchange coefficient, D is the electrolyte thickness, R is the gas constant, and G means a pressure loss geometric factor. What is noteworthy is that the specific relational expression among T H , m, D, and T C is given by [25].…”

Section: The Efficiency Of a Sodium Thermal Electrochemical Cellmentioning

confidence: 99%

Solar-driven sodium thermal electrochemical converter coupled to a Brayton heat engine: Parametric optimization

Peng

González-Ayala

et al. 2021

Renewable Energy

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A novel high-efficiency device comprised of three subsystems, a solar collector, a sodium thermal electrochemical converter, and a non-recuperative Brayton heat engine, is modeled by taking into account the main internal and external irreversibility sources. The model extends previous works in which the heat waste of the electrochemical converter is used as heat input in a Brayton gas turbine to study its performance and feasibility when a solar energy input is added. The operative working temperatures of three subsystems are determined by energy balance equations. The dependence of the efficiency and power output of the overall system on the solar concentration ratio, the current density, the thickness of the electrolyte, and the adiabatic pressure ratio (or temperature ratio) of the Brayton cycle is discussed in detail. The maximum efficiencies and power output densities are calculated and the states of the maximum efficiency-power density are determined under different given solar concentration ratios. The parametric optimum selection criteria of a number of critical parameters of the overall system are provided and the matching problems of the three subsystems are properly addressed. It is found that under a solar concentration around 1350, the maximum efficiency and power output density of the proposed hybrid system can reach, respectively, 29.6% and 1:23 Â 10 5 W/m 2. These values amount approximately 32.7% and 156% compared to those of the solar-driven sodium thermal electrochemical converter system without the bottoming Brayton cycle. The Pareto front obtained from numerical multiobjective and multi-parametric methods endorses previous findings.

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Section: The Efficiency Of a Sodium Thermal Electrochemical Cellmentioning

confidence: 99%

Solar-driven sodium thermal electrochemical converter coupled to a Brayton heat engine: Parametric optimization

Peng

González-Ayala

et al. 2021

Renewable Energy

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“…In 1997 Merril et al [11] reported a power degradation of PX-cells in time by 20.7 % over ~ 3000 hours. Subsequently, Lodhi et al [12] reported in 2001 a fast power degradation of the PX-3A cell of up to ~ 50 % after 2 years of operation.…”

Section: A History Of Amtec Convertermentioning

confidence: 99%

Direct energy conversion of heat to electricity using AMTEC

Ramos

Onea

Scherrer

et al. 2015

2015 5th International Youth Conference on Energy (IYCE)

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“…For example, Nakata et al [12] prepared TiN, TiC, TiC/TiN, and Mo electrodes for a Na-TEC by ceramic processing and studied their cathodic polarization characteristics at 600-800 • C. Lodhi et al [13] improved the efficiency of Na-TEC to 17.5% by changing some geometrical dimensions. Lodhi et al [14] further dealt with the problem of power degradation in some detail and proposed some suggested measures to diminish loss of power with time. Lodhi et al also investigated temperature dependent of grain growth model for Na-TEC electrodes [15] and BASE performance in an AMTEC [16].…”

Section: Introductionmentioning

confidence: 99%