Analysis of steam injected gas turbines for solar thermal applications
The Department of Energy's (DOE) Solar Thermal Program has as one of its program elements the development and evaluation of heat engine technologies that are applicable to Distributed Receiver Systems. The primary research and development activities, for the past several years, have involved the dish--electric concept in which a heat engine, solar receiver, and generator are combined as a power conversion assembly (PCA) and mounted at the focus of a parabolic dish concentrator. PCAs based on Rankine, Brayton, and Stirling cycle heat engines have been designed and built at 10/endash/25 kWe power levels with varying degrees of success. The small Brayton cycle engines in particular have fallen short of expectations as a focal mounted PCA. This report analyzes larger Brayton engines (500 kWe and above) supplied with fossil fuel and solar energy from 15-m diameter parabolic dishes or small central receivers. In particular, a steam injected gas turbine (STIG) cycle is examined because of its ability to offer higher efficiencies as compared to the combined cycle, regenerative Brayton cycle, and water injected Brayton cycle. This report outlines quantitatively the cycle parameters that affect efficiency for a solar-augmented steam-injected gas turbine. 15 refs., 18 figs., 2 tabs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6962487
- Report Number(s):
- SAND88-1249; ON: DE88014191
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140502* -- Solar Energy Conversion-- Thermonic & Thermoelectric conversion
140700 -- Solar Thermal Power Systems
141000 -- Solar Collectors & Concentrators
42 ENGINEERING
425001 -- Engineering-- Power Cycles-- Brayton-- (1980-)
BRAYTON CYCLE POWER SYSTEMS
CONVERSION
CSP
Concentrating Solar Power
DATA
DIAGRAMS
EFFICIENCY
ENERGY CONVERSION
ENERGY EFFICIENCY
ENERGY SYSTEMS
ENERGY TRANSFER
ENGINES
EQUATIONS
EQUIPMENT
EXPERIMENTAL DATA
FLOWSHEETS
GAS TURBINES
HEAT ENGINES
HEAT TRANSFER
INFORMATION
MACHINERY
NUMERICAL DATA
POWER SYSTEMS
RANKINE CYCLE POWER SYSTEMS
SOLAR CONCENTRATORS
SOLAR ENERGY CONVERSION
SOLAR EQUIPMENT
STIRLING CYCLE
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY