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Title: Organic Rankine-cycle power systems working fluids study: Topical report No. 2, Toluene

Abstract

The US Department of Energy initiated an investigation at Argonne National Laboratory in 1982 to experimentally determine the thermal stability limits and degradation rates of toluene as a function of maximum cycle temperature. Following the design and construction of a dynamic test loop capable of closely simulating the thermodynamic conditions of typical organic Rankine-cycle (ORC) power systems, four test runs, totaling about 3900 h of test time and covering a temperature range of 600-677(degree)F, were completed. Both liquid and noncondensable-vapor (gaseous) samples were drawn periodically and analyzed using capillary-column gas chromatography, gas chromatography/mass spectrometry, and mass spectrometry. A computer program that can predict degradation in an ORC engine was developed. Experimental results indicate that, if oxygen can be excluded from the system, toluene is a stable fluid up to the maximum test temperature; the charge of toluene could be used for several years before replacement became necessary. (Additional data provided by Sundstrand Corp. from tests sponsored by the National Aeronautics and Space Administration indicate that toluene may be used at temperatures up to 750(degree)F.) Degradation products are benign; the main liquid degradation products are bibenzyls, and the main gaseous degradation products are hydrogen and methane. A cold trap to removemore » gaseous degradation products from the condenser is necessary for extended operation. 21 figs., 22 tabs.« less

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
OSTI Identifier:
5059264
Report Number(s):
ANL/CNSV-TM-192
ON: DE88007152
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 42 ENGINEERING; RANKINE CYCLE POWER SYSTEMS; WORKING FLUIDS; TOLUENE; DECOMPOSITION; STABILITY; EXPERIMENTAL DATA; GAS CHROMATOGRAPHY; HEAT RECOVERY; MASS SPECTROSCOPY; WASTE HEAT UTILIZATION; ALKYLATED AROMATICS; AROMATICS; CHEMICAL REACTIONS; CHROMATOGRAPHY; DATA; ENERGY RECOVERY; ENERGY SYSTEMS; FLUIDS; HYDROCARBONS; INFORMATION; NUMERICAL DATA; ORGANIC COMPOUNDS; POWER SYSTEMS; RECOVERY; SEPARATION PROCESSES; SPECTROSCOPY; WASTE PRODUCT UTILIZATION; 320304* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization; 400201 - Chemical & Physicochemical Properties; 425002 - Engineering- Power Cycles- Rankine- (1980-)

Citation Formats

Cole, R. L., Demirgian, J. C., and Allen, J. W. Organic Rankine-cycle power systems working fluids study: Topical report No. 2, Toluene. United States: N. p., 1987. Web. doi:10.2172/5059264.
Cole, R. L., Demirgian, J. C., & Allen, J. W. Organic Rankine-cycle power systems working fluids study: Topical report No. 2, Toluene. United States. doi:10.2172/5059264.
Cole, R. L., Demirgian, J. C., and Allen, J. W. Sun . "Organic Rankine-cycle power systems working fluids study: Topical report No. 2, Toluene". United States. doi:10.2172/5059264. https://www.osti.gov/servlets/purl/5059264.
@article{osti_5059264,
title = {Organic Rankine-cycle power systems working fluids study: Topical report No. 2, Toluene},
author = {Cole, R. L. and Demirgian, J. C. and Allen, J. W.},
abstractNote = {The US Department of Energy initiated an investigation at Argonne National Laboratory in 1982 to experimentally determine the thermal stability limits and degradation rates of toluene as a function of maximum cycle temperature. Following the design and construction of a dynamic test loop capable of closely simulating the thermodynamic conditions of typical organic Rankine-cycle (ORC) power systems, four test runs, totaling about 3900 h of test time and covering a temperature range of 600-677(degree)F, were completed. Both liquid and noncondensable-vapor (gaseous) samples were drawn periodically and analyzed using capillary-column gas chromatography, gas chromatography/mass spectrometry, and mass spectrometry. A computer program that can predict degradation in an ORC engine was developed. Experimental results indicate that, if oxygen can be excluded from the system, toluene is a stable fluid up to the maximum test temperature; the charge of toluene could be used for several years before replacement became necessary. (Additional data provided by Sundstrand Corp. from tests sponsored by the National Aeronautics and Space Administration indicate that toluene may be used at temperatures up to 750(degree)F.) Degradation products are benign; the main liquid degradation products are bibenzyls, and the main gaseous degradation products are hydrogen and methane. A cold trap to remove gaseous degradation products from the condenser is necessary for extended operation. 21 figs., 22 tabs.},
doi = {10.2172/5059264},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {2}
}