skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Solar central receiver hybrid power system, Phase I. Volume 1. Executive summary. Final technical report, October 1978-August 1979

Abstract

The Martin Marietta team has conducted system analyses and conceptual designs of hybrid systems employing molten salt (60% NaNO/sub 3/, 40% KNO/sub 3/) heat transfer/storage media using a solar central receiver and a fossil-fired nonsolar energy source (coal, oil or gas). System- and subsystem-level analyses were performed to develop preferred system configurations using various amounts of solar storage capacities and fossil fuels. The various systems in this report are based on a technical approach that promotes higher conversion efficiencies, greater operational flexibility, and lower net energy costs than first generation water/steam receiver technology. In fact, the analysis shows that in the 1990 time frame, hybrid and solar standalone power systems based on molten salt technology are competitive with peaking, intermediate and baseload conventional power technology. The hybrid plant consists of solar and nonsolar portions of the plant that operate in parallel. For the solar portion of the plant, molten salt is heated in cavity receivers and delivered to salt storage tanks. The hot salt is used to generate steam for the turbine in salt heat exchangers. For the nonsolar portion of the plant, molten salt is heated in a fossil-fired salt heater and delivered to the salt storage tanks. Themore » large quantities of storage and associated heliostats result in large plant capacity factors (0.75) from the solar portion of the plant, minimize the busbar energy costs, permit nonsolar subsystems less than the plant rating and minimize the amount of fossil fuel burned. An executive summary of the selection of the preferred system configuration, conceptual design, assessment of the commercial plant, and development plan is presented. (WHK)« less

Publication Date:
Research Org.:
Martin Marietta Corp., Denver, CO (USA)
Sponsoring Org.:
USDOE
OSTI Identifier:
5146291
Report Number(s):
DOE/ET/21038-1(Vol.1)
DOE Contract Number:
ET-78-C-03-2234
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; FOSSIL-FUEL POWER PLANTS; HYBRID SYSTEMS; SOLAR-ASSISTED POWER SYSTEMS; DESIGN; ECONOMICS; TOWER FOCUS POWER PLANTS; COST; ELECTRIC UTILITIES; HEAT EXCHANGERS; HEAT TRANSFER FLUIDS; HELIOSTATS; MOLTEN SALTS; PERFORMANCE; SENSIBLE HEAT STORAGE; SOLAR RECEIVERS; THERMAL ENERGY STORAGE EQUIPMENT; ENERGY STORAGE; EQUIPMENT; FLUIDS; HEAT STORAGE; POWER PLANTS; POWER SYSTEMS; PUBLIC UTILITIES; SALTS; SOLAR EQUIPMENT; SOLAR POWER PLANTS; SOLAR THERMAL POWER PLANTS; STORAGE; THERMAL POWER PLANTS; 140700* - Solar Thermal Power Systems

Citation Formats

None. Solar central receiver hybrid power system, Phase I. Volume 1. Executive summary. Final technical report, October 1978-August 1979. United States: N. p., 1979. Web. doi:10.2172/5146291.
Copy to clipboard
None. Solar central receiver hybrid power system, Phase I. Volume 1. Executive summary. Final technical report, October 1978-August 1979. United States. doi:10.2172/5146291.
Copy to clipboard
None. Sat . "Solar central receiver hybrid power system, Phase I. Volume 1. Executive summary. Final technical report, October 1978-August 1979". United States. doi:10.2172/5146291. https://www.osti.gov/servlets/purl/5146291.
Copy to clipboard
@article{osti_5146291,
title = {Solar central receiver hybrid power system, Phase I. Volume 1. Executive summary. Final technical report, October 1978-August 1979},
author = {None},
abstractNote = {The Martin Marietta team has conducted system analyses and conceptual designs of hybrid systems employing molten salt (60% NaNO/sub 3/, 40% KNO/sub 3/) heat transfer/storage media using a solar central receiver and a fossil-fired nonsolar energy source (coal, oil or gas). System- and subsystem-level analyses were performed to develop preferred system configurations using various amounts of solar storage capacities and fossil fuels. The various systems in this report are based on a technical approach that promotes higher conversion efficiencies, greater operational flexibility, and lower net energy costs than first generation water/steam receiver technology. In fact, the analysis shows that in the 1990 time frame, hybrid and solar standalone power systems based on molten salt technology are competitive with peaking, intermediate and baseload conventional power technology. The hybrid plant consists of solar and nonsolar portions of the plant that operate in parallel. For the solar portion of the plant, molten salt is heated in cavity receivers and delivered to salt storage tanks. The hot salt is used to generate steam for the turbine in salt heat exchangers. For the nonsolar portion of the plant, molten salt is heated in a fossil-fired salt heater and delivered to the salt storage tanks. The large quantities of storage and associated heliostats result in large plant capacity factors (0.75) from the solar portion of the plant, minimize the busbar energy costs, permit nonsolar subsystems less than the plant rating and minimize the amount of fossil fuel burned. An executive summary of the selection of the preferred system configuration, conceptual design, assessment of the commercial plant, and development plan is presented. (WHK)},
doi = {10.2172/5146291},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Sep 01 00:00:00 EDT 1979},
month = {Sat Sep 01 00:00:00 EDT 1979}
}
Copy to clipboard
Technical Report:
View Technical Report (2.36 MB)
DOI:  10.2172/5146291
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

  • A design study for a central receiver/fossil fuel hybrid power system using molten salts for heat transfer and heat storage is presented. This volume contains the appendices: (A) parametric salt piping data; (B) sample heat exchanger calculations; (C) salt chemistry and salt/materials compatibility evaluation; (D) heliostat field coordinates; (E) data lists; (F) STEAEC program input data; (G) hybrid receiver design drawings; (H) hybrid receiver absorber tube thermal math model; (I) piping stress analysis; (J) 100-MWe 18-hour storage solar central receiver hybrid power system capital cost worksheets; and (K) 500-MWe 18-hour solar central receiver hybrid power system cost breakdown. (WHK)

  • The objectives of this study were to develop a hybrid power system design that (1) produces minimum cost electric power, (2) minimizes the capital investment and operating cost, (3) permits capacity displacement, (4) and achieves utility acceptance for market penetration. We have met the first three of these objectives and therefore believe that the fourth, utility acceptance, will become a reality. These objectives have been met by utilizing the Martin Marietta concept that combines the alternate central receiver power system design and a high-temperature salt primary heat transfer fluid and thermal storage media system with a fossil-fired nonsolar energy source.more » Task 1 reviewed the requirements definition document and comments and recommendations were provided to DOE/San Francisco. Task 2 consisted of a market analysis to evaluate the potential market of solar hybrid power plants. Twenty-two utilities were selected within nine regions of the country. Both written and verbal correspondence was used to assess solar hybrid power plants with respect to the utilities' future requirements and plans. The parametric analysis of Task 3 evaluated a wide range of subsystem configurations and sizes. These analyses included subsystems from the solar standalone alternate central receiver power system using high-temperature molten salt and from fossil fuel nonsolar subsystems. Task 4, selection of the preferred commerical system configuration, utilized the parametric analyses developed in Task 3 to select system and subsystem configurations for the commercial plant design. Task 5 developed a conceptual design of the selected commercial plant configuration and assessed the related cost and performance. Task 6 assessed the economics and performance of the selected configuration as well as future potential improvements or limitations of the hybrid power plants.« less

  • The SRI International industrial team completed a subsystem and system parametric analysis, a 100-MW/sub e/ commercial plant conceptual design, a cost and performance analysis, and a commercial assessment. An executive summary is presented in this volume. (WHK)

  • The results of the Combined Cycle Solar Hybrid Power System Study Project are summarized in this Executive Summary. The project is part of the US Department of Energy's Solar Central Receiver Hybrid Power System program. The major effort of the project was development and assessment of a commercial-scale power plant concept where both solar energy and fossil fuel are used to generate electricity. This so called hybrid concept was developed around a combined cycle gas turbine/steam turbine power plant. The scope of the study project included a market analysis, and parametric and system studies, leading to a comparative evaluation ofmore » the Modified Strawman and Advanced Strawman systems. (WHK)« less

  • The overall, long-term objective of the Solar Central Receiver Hybrid Power System program is to identify, characterize, and ultimately demonstrate the viability and cost effectiveness of solar/fossil, steam Rankine cycle, hybrid power systems that: (1) consist of a combined solar central receiver energy source and a nonsolar energy source at a single, common site, (2) may operate in the base, intermediate, and peaking capacity modes, (3) produce the rated output independent of variations in solar insolation, (4) provide a significant savings (50% or more) in fuel consumption, and (5) produce power at the minimum possible cost in mills/kWh. It ismore » essential that these hybrid concepts be technically feasible and economically competitive with other systems in the near to mid-term time period (1985-1990) on a commercial scale. The program objective for Phase I is to identify and conceptually characterize solar/fossil steam Rankine cycle, commercial-scale, power plant systems that are economically viable and technically feasible. A summary of results of Phase I is given in this volume. (WHK)« less