scholarly journals On the Corrosion adequacy of the 2 1/4 CR-1Mo steel for LMFBR steam generation system service. Critical literature survey

1980 ◽  
Author(s):  
G E Zima
Keyword(s):  
Literature Survey ◽  
Steam Generation ◽  
Generation System ◽  
System Service ◽  
Critical Literature

Democracy as the Rule of the Dumb Many?

2012 ◽  
Author(s):  
Hélène Landemore
Keyword(s):  
Democratic Theory ◽  
Literature Survey ◽  
Related Question ◽  
Cognitive Competence ◽  
Democratic Institutions ◽  
Epistemic Democracy ◽  
Definition Of ◽  
Traditional Approaches ◽  
Critical Literature

This chapter illustrates the deeply entrenched prejudice of political philosophers, including some democratic theorists, against “the rule of the dumb many.” It offers a critical literature survey showing how most traditional approaches to democracy either deny or circumvent the question of the people's competence to rule, with the exception of a tiny but growing literature on “epistemic democracy.” In fact, with the exception of the latter, the question of the cognitive competence of average citizens and the related question of the performance of democratic institutions either raises profound skepticism or is avoided altogether in contemporary democratic theory, both positive and normative. As a result, many theories and justifications of democracy tend to be competence insensitive, either denying that citizens' political incompetence is a problem or circumventing what they do see as a problem through an “elitist” definition of democracy as rule by the elected enlightened.

Dynamic simulation of a solar power plant steam generation system

2013 ◽  
Vol 33 ◽  
pp. 2-17 ◽  
Author(s):  
Thibault Henrion ◽  
Karl Ponweiser ◽  
Dirk Band ◽  
Thomas Telgen
Keyword(s):  
Power Plant ◽  
Dynamic Simulation ◽  
Solar Power ◽  
Solar Power Plant ◽  
Steam Generation ◽  
Generation System

scholarly journals Dynamically Coupled Operation of Two-Tank Indirect TES and Steam Generation System

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1720 ◽  
Author(s):  
Xiaolei Li ◽  
Zhifeng Wang ◽  
Ershu Xu ◽  
Linrui Ma ◽  
Li Xu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Molten Salt ◽  
Flow Rate ◽  
Thermal Energy ◽  
Dynamic Models ◽  
Solar Power ◽  
Steam Generation ◽  
Generation System ◽  
Concentrating Solar Power ◽  
Thermal Oil

A thermal energy storage system is a critical component in concentrating solar power plants (CSPP), owing to which concentrating solar power (CSP) has superiorities over photovoltaic and wind power. Currently, the sole thermal energy storage (TES) system which is commercially applied to parabolic trough solar power (PTSP) plants worldwide is the two-tank indirect TES. In this study, the dynamic models of a solar field (SF), a two-tank indirect TES system, and a steam generation system (SGS) in a PTSP plant were developed and validated. Control and operation strategies on a clear day and a cloudy day were provided, and the dynamic simulations of the coupled operation using actual meteorological data were conducted. The influence of the two-tank indirect TES system on the dynamic characteristics of SGS on a system level was analyzed. Other key parameter variations were also presented. The results show that during the transition from the charge to the discharge process, the steam parameters slowly decrease. The variation of the molten salt height is further affected by the molten salt mass flow rate at the inlet and outlet of the molten salt tank. We adopted the PI control to adjust the thermal oil mass flow rate, thermal oil temperature, and water height. The developed dynamic models are useful in guiding system operation and control.

Research progress on novel solar steam generation system based on black nanomaterials

2018 ◽  
Vol 96 (10) ◽  
pp. 2086-2099 ◽  
Author(s):  
Chao Xu ◽  
Qian Yang ◽  
Fuxian Wang ◽  
Xiaoming Fang ◽  
Zhengguo Zhang
Keyword(s):  
Research Progress ◽  
Steam Generation ◽  
Generation System ◽  
Solar Steam Generation

Nonlinear Dynamic Model of a Fluidized-Bed Steam Generation System

1980 ◽  
Vol 102 (1) ◽  
pp. 202-208 ◽  
Author(s):  
A. Ray ◽  
D. A. Berkowitz ◽  
V. H. Sumaria
Keyword(s):  
Fluidized Bed ◽  
Dynamic Model ◽  
Controller Design ◽  
Digital Simulation ◽  
Steam Generation ◽  
Generation System ◽  
Nonlinear Dynamic Model ◽  
Continuous Time Model ◽  
Design Data ◽  
Time Model

A dynamic model of an atmospheric pressure fluidized-bed steam generation system is presented which allows digital simulation and analytical controller design. The nonlinear, time-invariant, deterministic, continuous-time model is derived in state-space form from conservation relations, empirical correlations and system design data. The model has been verified for steady-state and transient performance with measured data from experimental test runs. Transient responses of several process variables, following independent step disturbances in coal feed rate and air flow, are illustrated.

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