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Title: Summary of the research and development effort on the supercritical CO/sub 2/ cycle

Abstract

The supercritical CO/sub 2/ cycle has the advantage over a conventional closed-cycle gas turbine in that the compression work phase of the cycle can be carried out close to the critical point and hence aerodynamic losses in the compressor are reduced and the cycle efficiency increased for a given turbine inlet temperature. However, the practicable turbine inlet temperature is reduced by permissible stresses in the heater tubes because the peak pressure in the cycle must be approx. 260 atm in order to have the compression process take place close to the critical point of the working fluid. The high system pressure also makes the capital cost of the heat exchangers and gas piping higher than that for a conventional closed-cycle gas turbine. Further, the waste heat from the cycle must be rejected at too low a temperature for it to be useful for industrial process heat or for district heating systems.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
6781034
Report Number(s):
ORNL/TM-6236
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; FOSSIL-FUEL POWER PLANTS; ECONOMIC ANALYSIS; TECHNOLOGY ASSESSMENT; THERMODYNAMIC CYCLES; GAS TURBINES; CAPITALIZED COST; CARBON DIOXIDE; ENERGY CONVERSION; FEASIBILITY STUDIES; FLUIDIZED-BED COMBUSTORS; HEAT RECOVERY; HIGH PRESSURE; HIGH TEMPERATURE; WASTE HEAT; WORKING FLUIDS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; COMBUSTORS; CONVERSION; COST; ECONOMICS; ENERGY; ENERGY RECOVERY; FLUIDS; HEAT; MACHINERY; OXIDES; OXYGEN COMPOUNDS; POWER PLANTS; RECOVERY; THERMAL POWER PLANTS; TURBINES; TURBOMACHINERY; WASTES; 200101* - Fossil-Fueled Power Plants- Cooling & Heat Transfer Equipment & Systems

Citation Formats

Fraas, A. P. Summary of the research and development effort on the supercritical CO/sub 2/ cycle. United States: N. p., 1981. Web. doi:10.2172/6781034.
Fraas, A. P. Summary of the research and development effort on the supercritical CO/sub 2/ cycle. United States. https://doi.org/10.2172/6781034
Fraas, A. P. 1981. "Summary of the research and development effort on the supercritical CO/sub 2/ cycle". United States. https://doi.org/10.2172/6781034. https://www.osti.gov/servlets/purl/6781034.
@article{osti_6781034,
title = {Summary of the research and development effort on the supercritical CO/sub 2/ cycle},
author = {Fraas, A. P.},
abstractNote = {The supercritical CO/sub 2/ cycle has the advantage over a conventional closed-cycle gas turbine in that the compression work phase of the cycle can be carried out close to the critical point and hence aerodynamic losses in the compressor are reduced and the cycle efficiency increased for a given turbine inlet temperature. However, the practicable turbine inlet temperature is reduced by permissible stresses in the heater tubes because the peak pressure in the cycle must be approx. 260 atm in order to have the compression process take place close to the critical point of the working fluid. The high system pressure also makes the capital cost of the heat exchangers and gas piping higher than that for a conventional closed-cycle gas turbine. Further, the waste heat from the cycle must be rejected at too low a temperature for it to be useful for industrial process heat or for district heating systems.},
doi = {10.2172/6781034},
url = {https://www.osti.gov/biblio/6781034}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 1981},
month = {Mon Jun 01 00:00:00 EDT 1981}
}