| Melcor-H2 Benchmarking of the Snl Transient Sulfuric Acid Decomposition Experiments | ||
| Sal B. Rodríguez Jr.1, David Louie2, Randall O. Gauntt3, Randy Cole Jr.3, Katherine McFadden4, Fred Gelbard5, Paul Pickard5, Tom Drennen5, Billy Martin6, Louis Archuleta2, Shripad T. Revankar7, Karen Vierow8, Mohamed EL-Genk, Regents', Prof.9 and Jean Michel Tournier9, (1)Experiments and New Programs, Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, (2)OMICRON Safety and Risk Technologies, Inc., 2500 Louisiana Blvd NE, Suite 410, Albuquerque, NM 87110, (3)Modelling and Analysis, Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, (4)Modelling and Analysis, Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87110, (5)Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, (6)Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87154, (7)School of Nuclear Engineering, Purdue University, 610 Purdue Mall, West Lafayette, IN 47907, (8)Department of Nuclear Engineering, Texas A&M University, 129 Zachry Engineering Center, MS 3133, College Station, TX 77843, (9)The University of New Mexico, Albuquerque, NM 87131 MELCOR is a world-renowned nuclear reactor safety analysis code that is used to simulate both light water and gas-cooled reactors. MELCOR-H2 is an extension of MELCOR that can model detailed nuclear reactors that are fully coupled with modular secondary-system components and the sulfur iodine (SI) thermochemical cycle for the generation of hydrogen and electricity. The models are applicable to both steady state and transient calculations. Previous work has shown that the hydrogen generation rate calculated by MELCOR-H2 for the SI cycle was within the expected theoretical yield, thus providing a macroscopic confirmation that MELCOR-H2's computational approach is reasonable. However, in order to better quantify its adequacy, benchmarking of the code with experimental data is required. Sulfuric acid decomposition experiments were conducted during late 2006 at Sandia National Laboratories, and MELCOR-H2 was used to simulate them. We developed an input deck based on the experiment's geometry, as well as the initial and boundary conditions, and then proceeded to compare the experimental acid conversion efficiency and SO2 production data with the code output. The comparison showed that the simulation output was typically within less than 10% of experimental data, and that key experimental data trends such as acid conversion efficiency, molar acid flow rate, and solution mole % were computed adequately by the MELCOR-H2.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy's National Nuclear Security Administration under Contract DE-AC04-94AL85000. Extended Abstract Status: File Uploaded | ||