Thermodynamics cycle in trnsys simulation

Because of the moreВ В» uncertainy of many assumptions, sensitivity analysis was used extensively. Detailed modeling of the operation of these plants, as they would operate on several electric utility systems, was the primary analytical method used. Liquid metal/molten salt, closed Brayton cycle, improved water-steam, and combined Brayton/Rankine cycle concepts were among those investigated. The central receiver plants evaluated included solar/fossil hybrid concepts and solar stand-alone plants with thermal storage. The impacts of interest included economics, the cost of producing electricity, fuels displaced, and utility system reliability. The value and potential electric utility impact of several advanced central receiver solar-thermal plant concepts in the role of electric generating stations are estimated. The solar-thermal plants should be considered for location outside of the Pacific Gas and Electric service area where insolation quality is higher. Solar/fossil hybrid plants showed no distinct economic advantage over solar stand-alone plants. The study indicates that if the DOE cost goals can moreВ В» be obtained along with the solar plant performance projected, the advanced central-receiver solar-thermal plants investigated can be economically justified on the Pacific Gas and Electric system. Sensitivities to insolation site, collector area and thermal storage were investigated. The analysis was based on the operation of the Pacific Gas and Electric system with these plants modeled in detail on the system. Liquid metal/molten salt and combined Brayton/Rankine cycle concepts were investigated. The plants evaluated included solar/fossil hybrid concepts and solar stand-alone plants with thermal storage. This study was performed to estimate the value and potential impact of two advanced central-receiver solar-thermal plant concepts, in the role of electric generating stations, on the Pacific Gas and Electric system. international symposium on solar thermal concentrating technologies, Odeillo (France), 22- Other Information: PBD: Country of Publication: United States Language: English Subject: 14 SOLAR ENERGY 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS SOLAR THERMAL POWER PLANTS COMPUTERIZED SIMULATION T CODES K CODES COMPUTER PROGRAM DOCUMENTATION PERFORMANCE COMPUTER CALCULATIONS (SNL-NM), Albuquerque, NM (United States) Sponsoring Org.: USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States) OSTI Identifier: 663590 Report Number(s): SAND-98-1494C CONF-980663- ON: DE98003543 BR: EB2311020 TRN: AHC29818%%428 DOE Contract Number: AC04-94AL85000 Resource Type: Technical Report Resource Relation: Conference: 9. Publication Date: Research Org.: Sandia National Lab. Sandia National Labs., Albuquerque, NM (United States).Deutsches Zentrum fuer Luft- und Raumfahrt e.V., Koeln (Germany).

Thermodynamics cycle in trnsys simulation