Dynamic Analysis of Direct Steam Generating Parabolic Trough Collector System

2020 ◽  
Vol 143 (3) ◽  
Author(s):  
C. V. Chachin Vishal ◽  
Jayaraj Krishnan ◽  
G. Venkatesan ◽  
V. Samson Packiaraj Raphael ◽  
Purnima Jalihal
Keyword(s):  
Pressure Drop ◽  
Working Fluid ◽  
Maximum Pressure ◽  
Parabolic Trough ◽  
Thermal Systems ◽  
Parabolic Trough Collector ◽  
Collector System ◽  
Multi Stage ◽  
Direct Steam ◽  
Mass Flowrate

Abstract Conventional desalination technologies like multi stage flashing, multi-effect desalination (MED) using steam as motive fluid can be made sustainable by obtaining the motive steam from solar thermal systems. In this study, a transient simulation has been performed to determine the dissimilitude in pressure drop and dryness fraction, of working fluid in absorber tube due to variation in solar irradiance. A one-dimensional (1D) mathematical model has been developed using matlab for assessing the thermal performance and heat transfer characteristics of a direct steam generating (DSG) parabolic trough collector (PTC) system. It was observed that maximum pressure drop does not occur at maximum quality indicating the working conditions impair the system performance. The developed model was used to overcome this by varying both pressure and mass flowrate of working fluid in accordance to the radiation, results indicated reduction in pressure drop during the same time period for the same exit quality.

Parametric Study of Solar Parabolic Trough Collector System

2012 ◽  
Vol 5 (6) ◽  
pp. 384-393 ◽  
Author(s):  
K. Senthil Manikandan ◽  
G. Kumaresan ◽  
R. Velraj ◽  
S. Iniyan
Keyword(s):  
Parametric Study ◽  
Parabolic Trough ◽  
Parabolic Trough Collector ◽  
Collector System

Thermoeconomic Analysis of Combined Cycle Coupled With Parabolic Trough Solar Plant

2013 ◽  
Author(s):  
M. D. Duran ◽  
E. A. Rincón ◽  
I. Martínez ◽  
A. Lentz
Keyword(s):  
Optimum Design ◽  
Combined Cycle ◽  
Working Fluid ◽  
Steam Generation ◽  
Parabolic Trough ◽  
Thermal Systems ◽  
Load Variations ◽  
Solar Plant ◽  
Combined Cycle Plant ◽  
Solar Field

Parabolic trough technology is currently one of the most extended solar thermal systems for the production of electricity. This paper describes a thermo-economic study of an integrated, combined-cycle parabolic trough power plant. The parabolic trough plant is considered an economizer or a superheater of the HRSG (heat recovery steam generator). The main objective is to obtain the optimum design of the different sections of the boiler and the size of the parabolic field. The configurations analyzed are two pressure levels with and without a reheater. A Euro Trough (ET) concentrator was used in this study, the working fluid being water with direct steam generation. There will be no problem with the evaporation in the absorber, since the solar plant will be the economizer of the HRSG and an approach point greater than 3°C is considered. The methodology applied for the optimization is Genetic Algorithms. This methodology was employed in previous works developed by the authors and yielded good results. So that method is applied to the configurations analyzed but including the parabolic trough plant. As a result, a thermoeconomic optimum design of a parabolic trough plant used as the section of the HRSG is obtained. The results show that the solar field increases the power and efficiency of the combined-cycle plant during the operation and makes it less susceptible to load variations.

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