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Performance of exhaust-gas blowdown turbine and various engine systems using a 12-cylinder liquid-cooled engine

Description: Report presenting an experimental investigation of a blowdown turbine installed in the exhaust stream of a 12-cylinder liquid-cooled engine of 1710-cubic-inch displacement. Results regarding turbine performance and performance of complete engine systems are provided.
Date: November 1948
Creator: Desmon, Leland G. & Sams, Eldon W.
Partner: UNT Libraries Government Documents Department

LOFT Monthly Progress Report for July 1980

Description: During July, the LOFT test sequence underwent careful review which determined that changes would be appropriate. Evaluation of Tests L3-4 and L6-1 indicated they would not add significantly to the information base available from other experiments; therefore, these tests were cancelled. As shown in the Management Summary Schedule included in this report, the next test to be run is L3-5, scheduled for mid-September. Test L3-5 will be a small-break test in the cold leg side of the operating loop of the plant. Work efforts during July concentrated on plant preparation for the mid-September test. Installation of a new small-break path from the cold leg to the blowdown suppression tank, together with the associated new instrumentation installations, were well underway and on schedule at month's end. The Actual spending rate to date is in agreement with current budgets and authorized funding levels.
Date: August 1, 1980
Creator: Kaufman, N. C.
Partner: UNT Libraries Government Documents Department

A coupled RELAPS-3D/CFD methodology with a proof-of-principle calculation

Description: The RELAP5-3D computer code was modified to make the explicit coupling capability in the code fully functional. As a test of the modified code, a coupled RELAP5/RELAP5 analysis of the Edwards-O'Brien blowdown problem was performed which showed no significant deviations from the standard RELAP5-3D predictions. In addition, a multiphase Computational Fluid Dynamics (CFD) code was modified to permit explicit coupling to RELAP5-3D. Several calculations were performed with this code. The first analysis used the experimental pressure history from a point just upstream of the break as a boundary condition. This analysis showed that a multiphase CFD code could calculate the thermodynamic and hydrodynamic conditions during a rapid blowdown transient. Finally, a coupled RELAP5/CFD analysis was performed. The results are presented in this paper.
Date: January 1, 2000
Creator: Aumiller, D.L.; Tomlinson, E.T. & Bauer, R.C.
Partner: UNT Libraries Government Documents Department

Experiment data report for 1-1/2-loop semiscale system isothermal Test 1011

Description: Recorded test data are presented for Test 1011 of the isothermal portion of the Semiscale Blowdown and Emergency Core Cooling (ECC) Project. The data represent the results of a test in the isothermal test series in which a break nozzle area 80% that of other test configurations was used with no simulated ECC injection. The data, presented in the form of graphs in engineering units, have been analyzed only to the extent necessary to assure that they are reasonable and correct. Uninterpreted data from Test 1011 for use by others and for support of subsequent interpretive reports and analyses are presented. (auth)
Date: March 1, 1974
Creator: Alder, R.S.; Feldman, E.M. & Pinson, P.A.
Partner: UNT Libraries Government Documents Department

Boiler Blowdown Heat Recovery Project Reduces Steam System Energy Losses at Augusta Newsprint

Description: The boiler blowdown process involves the periodic or continuous removal of water from a boiler to remove accumulated dissolved solids and/or sludges. During the process, water is discharged from the boiler to avoid the negative impacts of dissolved solids or impurities on boiler efficiency and maintenance. However, boiler blowdown wastes energy because the blown down liquid is at about the same temperature as the steam produced. Much of this heat can be recovered by routing the blown down liquid through a heat exchanger that preheats the boiler's makeup water. A boiler blowdown heat recovery project at Augusta Newsprint Company's Augusta, GA mill will save almost $31,000 annually in fuel costs.
Date: February 1, 2002
Creator: United States. Department of Energy. Office of Energy Efficiency and Renewable Energy. Office of Industrial Technologies.
Partner: UNT Libraries Government Documents Department

CC Cryostat Cooldown Test Results

Description: A cooldown of the inner vessel of the Central Calorimeter cryostat to 77K was performed during the week of October 12 in order to 'cold shock' it, i.e., to check for insulating vacuum integrity with the inner vessel cold. The conclusion from our test results is that the vessel withstood the cold shock, and the insulating vacuum remained good. Cooldown was analyzed by J.D. Fuerst in D0 note 3740.000-EN-107, dated August 19. Warmup was analyzed by T. Peterson and B.Fitzpatrick in D0 Engineering Note 3740.214-EN-110, dated September 29. Both cooldown and warmup times were in accordance with predictions. An initial pumpdown of the insulating vacuum space was done with the vessel warm on October 9. The results of that pumpdown are shown in Figure 1 superimposed on a predicted pumpdown curve generated by Brian Fitzpatrick before the test began. After 24 hours the insulating vacuum was 7 microns. After 48 and 72 hours it was 2-3 microns. At this point (October 12) valving the pumps off resulted in a rise of 6 microns in 3 hours and 20 minutes, or 1.8 microns per hour. Before beginning cooldown, the pumps were valved off and the insulating vacuum was 15 microns. Cooldown and fill began at 0900 on Tuesday, October 13. At 1650, about 8 hours later, LN{sub 2} flow to the cryostat was shut off. A total of 2600 gallons was consumed during this period based on my readings of the trailer liquid level gauge and chart. An additional 500 gallons was used (according to the same liquid level gauge) in the final blowdown of pressure in the trailer, bringing the total to 3100 gallons. Based on weight in and weight out, 21980 pounds of LN{sub 2} was used, or 3273 gallons of liquid. This is good enough agreement with my ...
Date: October 16, 1987
Creator: Peterson, T.
Partner: UNT Libraries Government Documents Department

Three dimensional analysis of turbulent steam jets in enclosed structures : a CFD approach.

Description: This paper compares the three-dimensional numerical simulation with the experimental data of a steam blowdown event in a light water reactor containment building. The temperature and pressure data of a steam blowdown event was measured at the Purdue University Multi-Dimensional Integrated Test Assembly (PUMA), a scaled model of the General Electric simplified Boiling Water Reactor. A three step approach was used to analyze the steam jet behavior. First, a 1-Dimensional, system level RELAP5/Mod3.2 model of the steam blowdown event was created and the results used to set the initial conditions for the PUMA blowdown experiments. Second, 2-Dimensional CFD models of the discharged steam jets were computed using PHOENICS, a commercially available CFD package. Finally, 3-Dimensional model of the PUMA drywell was created with the boundary conditions based on experimental measurements. The results of the 1-D and 2-D models were reported in the previous meeting. This paper discusses in detail the formulation and the results of the 3-Dimensional PHOENICS model of the PUMA drywell. It is found that the 3-D CFD solutions compared extremely well with the measured data.
Date: April 20, 1999
Creator: Ishii, M. & NguyenLe, Q.
Partner: UNT Libraries Government Documents Department

RELAP5-3D Code for Supercritical-Pressure Light-Water-Cooled Reactors

Description: The RELAP5-3D computer program has been improved for analysis of supercritical-pressure, light-water-cooled reactors. Several code modifications were implemented to correct code execution failures. Changes were made to the steam table generation, steam table interpolation, metastable states, interfacial heat transfer coefficients, and transport properties (viscosity and thermal conductivity). The code modifications now allow the code to run slow transients above the critical pressure as well as blowdown transients (modified Edwards pipe and modified existing pressurized water reactor model) that pass near the critical point.
Date: April 1, 2003
Creator: Riemke, Richard Allan; Davis, Cliff Bybee & Schultz, Richard Raphael
Partner: UNT Libraries Government Documents Department