Baseload Nitrate Salt Central Receiver Power Plant Design Final Report
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Baseload Nitrate Salt Central Receiver Power Plant Design Final Report
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Author :
language : en
Publisher:
Release Date : 2014
Baseload Nitrate Salt Central Receiver Power Plant Design Final Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The objectives of the work were to demonstrate that a 100 MWe central receiver plant, using nitrate salt as the receiver coolant, thermal storage medium, and heat transport fluid in the steam generator, can 1) operate, at full load, for 6,400 hours each year using only solar energy, and 2) satisfy the DOE levelized energy cost goal of $0.09/kWhe (real 2009 $). To achieve these objectives the work incorporated a large range of tasks relating to many different aspects of a molten salt tower plant. The first Phase of the project focused on developing a baseline design for a Molten Salt Tower and validating areas for improvement. Tasks included a market study, receiver design, heat exchanger design, preliminary heliostat design, solar field optimization, baseline system design including PFDs and P & IDs and detailed cost estimate. The baseline plant met the initial goal of less than $0.14/kWhe, and reinforced the need to reduce costs in several key areas to reach the overall $0.09/kWhe goal. The major improvements identified from Phase I were: 1) higher temperature salt to improve cycle efficiency and reduce storage requirements, 2) an improved receiver coating to increase the efficiency of the receiver, 3) a large receiver design to maximize storage and meet the baseload hours objective, and 4) lower cost heliostat field. The second Phase of the project looked at advancing the baseline tower with the identified improvements and included key prototypes. To validate increasing the standard solar salt temperature to 600 °C a dynamic test was conducted at Sandia. The results ultimately proved the hypothesis incorrect and showed high oxide production and corrosion rates. The results lead to further testing of systems to mitigate the oxide production to be able to increase the salt temperature for a commercial plant. Foster Wheeler worked on the receiver design in both Phase I and Phase II looking at both design and lowering costs utilizing commercial fossil boiler manufacturing. The cost and design goals for the project were met with this task, but the most interesting results had to do with defining the failure modes and looking at a "shakedown analysis" of the combined creep-fatigue failure. A separate task also looked at improving the absorber coatings on the receiver tubes that would improve the efficiency of the receiver. Significant progress was made on developing a novel paint with a high absorptivity that was on par with the current Pyromark, but shows additional potential to be optimized further. Although the coating did not meet the emissivity goals, preliminary testing the new paint shows potential to be much more durable, and potential to improve the receiver efficiency through a higher average absorptivity over the lifetime. Additional coatings were also designed and modeled results meet the project goals, but were not tested. Testing for low cycle fatigue of the full length receiver tubes was designed and constructed, but is still currently undergoing testing. A novel small heliostat was developed through an extensive brainstorming and down select. The concept was then detailed further with inputs from component testing and eventually a full prototype was built and tested. This task met or exceeded the accuracy and structure goals and also beat the cost goal. This provides a significant solar field costs savings for Abengoa that will be developed further to be used in future commercial plants. Ultimately the $0.09/kWhe (real 2009 $) and 6,400 hours goals of the project were met.
Conceptual Design Of Advanced Central Receiver Power System Phase I Executive Summary And Final Report
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Author :
language : en
Publisher:
Release Date : 1978
Conceptual Design Of Advanced Central Receiver Power System Phase I Executive Summary And Final Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
The designed system has a net electrical output of 300 MWe and has sufficient heliostats and storage capacity to provide full load operation 24 hours per day at summer solstice. The system consists of nine heliostat fields with 7711 heliostats in each. The heliostats track the sun and direct the solar energy incident on them to one of four cavity apertures located at the top of a 155-meter (510 ft) tower. Inside the cavity the flux is absorbed on panels. The panels are cooled by molten salt that enters the receiver at 561/sup 0/K (550/sup 0/K) and leaves the receiver at 838/sup 0/K (1050/sup 0/F). Salt flowrate is controlled to maintain a constant salt exit temperature at the receiver outlet. The hot salt is pumped to the steam generator and/or the storage system. Hot salt pumped to the storage system is stored for later use by the steam generator. The hot salt pumped to the steam generating system is used by the steam generator to heat boiler feedwater and make 783/sup 0/K (950/sup 0/K), 16.5 MPa (2400 psig) superheated steam for the steam turbine/generator. During the process the hot salt is cooled to 561/sup 0/K (550/sup 0/K). The cold salt is pumped to the bottom of the thermal storage tank and/or back to the receivers. During periods when solar insolation is insufficient for rated operation, energy is extracted from the storage system and used to supply heat to the steam generator. The master control system is computerized and provides operator over-rides that serve as overall plant control. It also provides data display and storage.
Conceptual Design Of Advanced Central Receiver Power System
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Author :
language : en
Publisher:
Release Date : 1978
Conceptual Design Of Advanced Central Receiver Power System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Solar collectors categories.
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept Volume 1 Executive Summary Final Report
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Author :
language : en
Publisher:
Release Date : 1979
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept Volume 1 Executive Summary Final Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
The conceptual design of an advanced central receiver power system using liquid sodium as a heat transport medium has been completed by a team consisting of the Energy Systems Group (prime contractor), McDonnell Douglas, Stearns-Roger, The University of Houston, and Salt River Project. The purpose of this study was to determine the technical and economic advantages of this concept for commercial-scale power plants. This final report covers all tasks of the project. These tasks were as follows: (1) review and analysis of preliminary specification; (2) parametric analysis; (3) select commercial configuration; (4) commercial plant conceptual design; (5) assessment of commercial plant; (6) advanced central receiver power system development plan; (7) program plan; (8) reports and data; (9) program management; and (10) safety analysis. A programmatic overview of the accomplishments of this program is given. The 100-MW conceptual commercial plant, the 281-MW optimum plant, and the 10-MW pilot plant are described. (WHK).
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept Volume 2 Book 2 Appendices Final Report
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Author :
language : en
Publisher:
Release Date : 1979
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept Volume 2 Book 2 Appendices Final Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
The appendices include: (A) design data sheets and P and I drawing for 100-MWe commercial plant design, for all-sodium storage concept; (B) design data sheets and P and I drawing for 100-MWe commercial plant design, for air-rock bed storage concept; (C) electric power generating water-steam system P and I drawing and equipment list, 100-MWe commercial plant design; (D) design data sheets and P and I drawing for 281-MWe commercial plant design; (E) steam generator system conceptual design; (F) heat losses from solar receiver surface; (G) heat transfer and pressure drop for rock bed thermal storage; (H) a comparison of alternative ways of recovering the hydraulic head from the advanced solar receiver tower; (I) central receiver tower study; (J) a comparison of mechanical and electromagnetic sodium pumps; (K) pipe routing study of sodium downcomer; and (L) sodium-cooled advanced central receiver system simulation model. (WHK).
Conceptual Design Of Advanced Central Receiver Power System
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Author :
language : en
Publisher:
Release Date : 1978
Conceptual Design Of Advanced Central Receiver Power System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept
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Author :
language : en
Publisher:
Release Date : 1979
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
This volume encompasses Task 6 of the Phase I effort on the Advanced Central Receiver. This task included developing a plan to bring the commercial plant conceptual design into being. The base version of the plan includes a pilot plant to be designed and constructed during Phases II and III, three subsystem research experiments to be performed during Phase II, and the design and construction of a commercial demonstration plant. These plans are discussed in detail, as well as several options which could reduce both cost and schedule to achieve the overall goal of a commercial-sized demonstration plant. In evaluating pilot plant characeristics, emphasis was placed on representing commercial plant receiver characteristics and total system operation. In considering total system operation, it was recognized that a water-steam pilot plant would already be in operation, hence certain systems will already have been tested. Several receiver configurations were investigated consisting of from one to five full-size panels, with the objective of representing peak north side power for a 100-MWe plant as well as the peak flux vaue of about 1.4 MW/m2. This goal was accomplished with a 5-panel receiver; however, the power to the edge panels is very low. Hence, with little loss, these panels can be eliminated to give a 3-panel configuration. The total absorbed thermal power is about 38 MWt, which is sufficient for about 10 MWe. A plant of this size is described.
Conceptual Design Of Advanced Central Receiver Power Systems
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Author :
language : en
Publisher:
Release Date : 1979
Conceptual Design Of Advanced Central Receiver Power Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Solar power plants categories.
Water Steam Rankine Cycle Solar Central Receiver Power Plant
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Author :
language : en
Publisher:
Release Date : 1985
Water Steam Rankine Cycle Solar Central Receiver Power Plant written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Renewable energy sources categories.
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept Volume 4 Commercial And Pilot Plant Cost Data Final Report
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Author :
language : en
Publisher:
Release Date : 1979
Conceptual Design Of Advanced Central Receiver Power Systems Sodium Cooled Receiver Concept Volume 4 Commercial And Pilot Plant Cost Data Final Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
This volume of the advanced central receiver final report presents the cost data using the cost breakdown structure identified in the preliminary specification. Cost summaries are presented in the following sections for the 100-MWe and 281-MWe commercial plant and a 10-MWe pilot plant. Cost substantiation data for this volume are presented in the appendices. Other cost summary data include Nth plant data for the 100-MWe and 281-MWe commercial plants, and a summary for the alternative concept air-rock storage system. The main description of the plant costing technique occurs as part of Section II for the 100-MWe baseline concept.