Solar Thermal Organic Rankine Cycle (STORC) power plant as an alternative to the steam power plant with a parabolic trough system in South Africa

2017 ◽  
Author(s):  
O.Y. Odufuwa ◽  
K. Kusakana
Keyword(s):  
South Africa ◽  
Power Plant ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Solar Thermal ◽  
Parabolic Trough ◽  
Steam Power ◽  
Steam Power Plant

scholarly journals Comparison of Li2CO3-Na2CO3-K2CO3, KCl-MgCl2 and NaNO3-KNO3 as heat transfer fluid for different sCO2 and steam power cycles in CSP tower plant under different DNI conditions

2021 ◽  
Vol 13 (4) ◽  
pp. 168781402110119
Author(s):  
Kamran Mahboob ◽  
Awais A Khan ◽  
Muhammad Adeel Khan ◽  
Jawad Sarwar ◽  
Tauseef A Khan
Keyword(s):  
Heat Transfer ◽  
Power Plant ◽  
Rankine Cycle ◽  
Capacity Factor ◽  
Solar Thermal ◽  
Heat Transfer Fluid ◽  
Incident Power ◽  
Steam Power ◽  
Power Cycles ◽  
Plant Configuration

This work presents the characteristics of a solar thermal tower power plant in two different places (Seville and Dubai) using three different HTFs (NaNO3-KNO3, KCl-MgCl2 and Li2CO3-Na2CO3-K2CO3) and three different power cycles (Rankine, sCO2 Recompression and sCO2 Partial cooling cycles). An indirect configuration is considered for the Gemasolar power plant. Detailed modelling is carried out for the conversion of incident power on the heliostat to the output electricity. Optimization of the cycle is carried out to determine the most promising cycle configuration for efficiency. The results showed that for the Gemasolar power plant configuration, the performance of the KCl-MgCl2 based plant was poorest amongst all. NaNO3-KNO3 based plant has shown good performance with the Rankine cycle but plant having Li2CO3-Na2CO3-K2CO3 as HTF was best for all three cycles. Partial cooling was the best performing cycle at both locations with all three HTFs. Placing the Seville Plant in Dubai has improved the efficiency from 23.56% to 24.33%, a capacity factor improvement of 21 and 52 GW additional power is generated. The optimization of the plant in Dubai has shown further improvements. The efficiency is improved, the Capacity factor is increased by 31.2 and 77.8 GW of additional electricity is produced.

Using Design to Teach Thermodynamic Cycles: Designing a 250 MW Steam Power Plant Using the Rankine Cycle

2001 ◽  
Author(s):  
Ken Van Treuren ◽  
Nicole DeJong
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Rankine Cycle ◽  
System Optimization ◽  
Student Interest ◽  
Steam Power ◽  
Thermodynamic Cycles ◽  
Design Project ◽  
Steam Power Plant ◽  
Typical Component

Power generation is increasingly important in the turbine industry. Students need exposure to the complexities of such systems as found in this design project. This project is part of the second of a two-course thermodynamic sequence designed to provide a foundation in thermodynamics and expose the students to various power generation cycles. One way to teach students the Rankine Cycle is to involve them in the various aspects of the cycle through a design project. Students, in teams of four or five, are given the task of designing a 250 MW steam power plant based on the Rankine Cycle. Calculations are made using the software of choice, usually Engineering Equation Solver (EES). Students are required to make an oral and written presentation. In addition to the presentation of calculations and graphs, an emphasis is placed on describing the general considerations of the design problem and the presentation of the unique advantages of the design. Students gain valuable experience in system optimization and better learn to justify their design decisions. Based on student evaluations the project was well received and increased student interest in the field of power generation. However, there is a need to include an economic component to the problem, and more time must be spent in class discussing typical component operating parameters.

Modeling, Simulation, and Performance Evaluation Analysis of a Parabolic Trough Solar Collector Power Plant Coupled to an Organic Rankine Cycle Engine in North Eastern Greece Using trnsys

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Pantelis N. Botsaris ◽  
Alexandros G. Pechtelidis ◽  
Konstantinos A. Lymperopoulos
Keyword(s):  
Power Plant ◽  
Simulation Model ◽  
Small Deviation ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Operating Conditions ◽  
Parabolic Trough ◽  
Hybrid Power ◽  
Hybrid Power Plant ◽  
And Performance

The present work is focused on the development of a simulation model for an existing cogeneration power plant, which utilizes a solar thermal field with parabolic trough solar collectors coupled to an Organic Rankine Cycle engine. The power plant is modeled in the trnsys v.17 software package and its performance has been validated with real operating conditions. The simulated system (concentrated solar power (CSP) field and ORC engine) is the main part of a hybrid power plant located near “Ziloti” village of the Municipality of Xanthi, in northeastern Greece. The construction of the hybrid power plant was funded by the Strategic Co-Funded Project of the European Territorial Cooperation Program Greece–Bulgaria 2007–2013 with the acronym ENERGEIA. The power plant simulated in this paper includes a 234 kWth solar parabolic trough collector (PTC) field, a 5 m3 thermal energy storage tank, and a 5 kWe ORC engine for the production of thermal and electrical energies. The results of the simulations present small deviation in contrast to the real operating data of the CSP power plant coupled with the ORC engine, therefore the simulation model is considered as reliable.

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