Ethan Hecht

Senior Member of Technical Staff, Combustion Research Facility

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Senior Member of Technical Staff, Combustion Research Facility

ehecht@sandia.gov

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(925) 294-3741

Sandia National Laboratories, California
 P.O. Box 969
 Livermore, CA 94551-0969

Biography

Ethan S. Hecht is a Senior Member of the Technical Staff at the Combustion Research Facility at Sandia National Laboratories.  He has broad expertise in hydrogen energy systems.  He has led experimental investigations of (high pressure and cryogenic) hydrogen dispersion and flame behavior using laser and conventional diagnostics, helped develop the HyRAM quantitative risk assessment toolkit, contributed to reference station designs of hydrogen fueling stations, and performed experiments on the synthesis and characterization of metal hydrides for solid-state hydrogen storage. Beyond hydrogen, he has also worked on a range of projects at Sandia, including developing the scientific underpinnings for CO2-neutral coal utilization strategies, identifying promising approaches to improving efficiencies of cellulosic bio-refineries, developing methods for the high-efficiency extraction of heavy oil, and investigating advanced electro- and thermo-chemical reactions.

Before joining Sandia in 2005, Ethan was a graduate research assistant at Colorado School of Mines where studied the fuel reforming that occurs in the anode of a solid oxide fuel cell. As participant in the Doctoral Studies Program at Sandia, Ethan earned a PhD from the University of Utah, where he researched oxy-combustion of coal. Google Scholar

Education

PhDUniversity of UtahSalt Lake City
Colorado School of MinesGolden, Colorado

Publications

  • Ehrhart, B., Hecht, E., & Hecht, E. (2022). Hydrogen Plus Other Alternative Fuels Risk Assessment Models (HyRAM+) Version 5.0 Technical Reference Manual. https://doi.org/10.2172/1900089 Publication ID: 80442
  • Shaddix, C., Hecht, E., Haynes, B., & Haynes, B. (2022). Quantifying the effect of CO2 gasification on pulverized coal char oxy-fuel combustion. Proceedings of the Combustion Institute. https://doi.org/10.1016/j.proci.2022.07.122 Publication ID: 80107
  • Baird, A., Hecht, E., Ehrhart, B., Muna, A., & Muna, A. (2022). Liquid Hydrogen Heavy-Duty Vehicle Safety Review and Refueling Facility Design. https://doi.org/10.2172/1885100 Publication ID: 80124
  • Ehrhart, B., Hecht, E., & Hecht, E. (2022). Hydrogen Plus Other Alternative Fuels Risk Assessment Models (HyRAM+) Version 4.1 Technical Reference Manual. https://doi.org/10.2172/1865723 Publication ID: 80703
  • Glover, A., Ehrhart, B., Muna, A., Hecht, E., Bernard, L., Houssin, D., Jallais, S., Vyazmina, E., & Vyazmina, E. (2021). Benchmark Comparison of HyRAM and ALDEA Software for Hydrogen Release Behavior. https://doi.org/10.2172/1880411 Publication ID: 76488
  • Hecht, E., Ehrhart, B., & Ehrhart, B. (2021). Hydrogen Plus Other Alternative Fuels Risk Assessment Models (HyRAM+) (Technical Reference Manual V.4). https://doi.org/10.2172/1832082 Publication ID: 76867
  • Bran Anleu, G., Hecht, E., Machalek, D., & Machalek, D. (2021). Influence of Non-Equilibrium Conditions on Liquid Hydrogen Storage Tank Behavior [Slides] [Conference Presenation]. https://doi.org/10.2172/1887049 Publication ID: 75614
  • Schroeder, B., Ehrhart, B., LaFleur, C., Hecht, E., Glover, A., Baird, A., Mohmand, J., Blaylock, M.L., Bran Anleu, G., Klebanoff, L., Markt, C., & Markt, C. (2021). Insights from Sandia?s Hydrogen Projects [Presentation]. https://www.osti.gov/biblio/1886166 Publication ID: 75531
  • Schroeder, B., Ehrhart, B., LaFleur, C., Hecht, E., Glover, A., Baird, A., Mohmand, J., Markt, C., Klebanoff, L., Blaylock, M.L., Brooks, D., Bran Anleu, G., Ronevich, J., & Ronevich, J. (2021). Safety Issues in Handling and Use of Hydrogen as a Fuel [Presentation]. https://www.osti.gov/biblio/1886193 Publication ID: 75548
  • Hecht, E., Ehrhart, B., & Ehrhart, B. (2021). Analysis to support revised distance between bulk liquid hydrogen systems and exposures [Conference Presenation]. https://doi.org/10.2172/1887724 Publication ID: 75709
  • Hecht, E. (2021). Overview of NFPA 2 public comment 49/NFPA 55 public comment 16 [Presentation]. https://www.osti.gov/biblio/1889076 Publication ID: 75762
  • Hecht, E., Killingsworth, N., & Killingsworth, N. (2021). Effect of wind on cryogenic hydrogen dispersion from vent stacks [Conference Presenation]. https://doi.org/10.2172/1888420 Publication ID: 75764
  • Hecht, E., Bran Anleu, G., Machaleka, D., & Machaleka, D. (2021). INFLUENCE OF NON-EQUILIBRIUM CONDITIONS ON LIQUID HYDROGEN STORAGE TANK BEHAVIOR [Conference Paper]. https://www.osti.gov/biblio/1884144 Publication ID: 79126
  • Hecht, E., Ehrhart, B., & Ehrhart, B. (2021). Analysis to support revised distances between bulk liquid hydrogen systems and exposures [Conference Paper]. https://www.osti.gov/biblio/1875028 Publication ID: 79067
  • Hecht, E., Killingsworth, N., & Killingsworth, N. (2021). Effect of wind on cryogenic hydrogen dispersion from vent stacks [Conference Paper]. https://www.osti.gov/biblio/1875029 Publication ID: 79068
  • Hecht, E. (2021). Lab-scale dispersion of cryogenic hydrogen jets [Conference Presenation]. https://doi.org/10.2172/1867138 Publication ID: 78370
  • Ehrhart, B., Hecht, E., Mohmand, J., LaFleur, C., & LaFleur, C. (2021). Update on Recent Efforts for the HyRAM Toolkit [Presentation]. https://www.osti.gov/biblio/1868175 Publication ID: 78437
  • Ehrhart, B., Hecht, E., Mohmand, J., & Mohmand, J. (2021). Validation and Comparison of HyRAM Physics Models. https://doi.org/10.2172/1813659 Publication ID: 78453
  • Ehrhart, B., Hecht, E., & Hecht, E. (2021). Hydrogen Risk Assessment Models (HyRAM) (V.3.1) (Technical Reference Manual). https://doi.org/10.2172/1784842 Publication ID: 78454
  • Hecht, E., Ehrhart, B., & Ehrhart, B. (2021). Updated Justification for LH2 Exposure Distance Proposal [Presentation]. https://www.osti.gov/biblio/1869534 Publication ID: 78545
  • Hecht, E. (2021). Scientific justification for updating the bulk liquid separation distance tables in NFPA 2 [Presentation]. https://www.osti.gov/biblio/1863186 Publication ID: 78019
  • Ehrhart, B., LaFleur, C., Hecht, E., Glover, A., Baird, A., Mohmand, J., Sims, C., Blaylock, M.L., & Blaylock, M.L. (2021). Hydrogen Quantitative Risk Assessment [Presentation]. https://www.osti.gov/biblio/1863518 Publication ID: 78074
  • Hecht, E. (2021). R&D for Safety Codes and Standards: Hydrogen Behavior [Conference Presenation]. https://doi.org/10.2172/1863509 Publication ID: 78081
  • Hecht, E., Chowdhury, B.R., & Chowdhury, B.R. (2021). Characteristic of cryogenic hydrogen flames from high-aspect ratio nozzles. International Journal of Hydrogen Energy, 46(23), pp. 12320-12328. https://doi.org/10.1016/j.ijhydene.2020.08.265 Publication ID: 74732
  • Li, X., Chowdhury, B.R., He, Q., Christopher, D.M., Hecht, E., & Hecht, E. (2021). Validation of two-layer model for underexpanded hydrogen jets. International Journal of Hydrogen Energy, 46(23), pp. 12545-12554. https://doi.org/10.1016/j.ijhydene.2020.08.204 Publication ID: 74768
  • Chowdhury, B.R., Hecht, E., & Hecht, E. (2021). Dispersion of cryogenic hydrogen through high-aspect ratio nozzles. International Journal of Hydrogen Energy, 46(23), pp. 12311-12319. https://doi.org/10.1016/j.ijhydene.2020.09.072 Publication ID: 74811
  • Blaylock, M.L., Hecht, E., Shum, J., & Shum, J. (2021). Validation of the HyRAM+ physics models for use with propane. https://doi.org/10.2172/1821534 Publication ID: 77698
  • Hecht, E. (2021). Experiments and Analysis in Support of Science-Based Liquid Hydrogen Codes and Standards [Presentation]. https://www.osti.gov/biblio/1854672 Publication ID: 75053
  • Hecht, E. (2020). Developing a scientific basis for liquid hydrogen safety codes and standards in the United States [Conference Presenation]. https://doi.org/10.2172/1889058 Publication ID: 71801
  • Hecht, E. (2020). Hydrogen detection via Raman scattering [Presentation]. https://www.osti.gov/biblio/1826452 Publication ID: 71285
  • Hecht, E., Jordan, T., & Jordan, T. (2020). Session: Progress in Safety Research Topic: Low T (LH2/cryogenic) related [Presentation]. https://www.osti.gov/biblio/1829248 Publication ID: 71518
  • Bösenhofer, M., Hecht, E., Shaddix, C., König, B., Rieger, J., Harasek, M., & Harasek, M. (2020). Computational fluid dynamics analysis of char conversion in Sandia’s pressurized entrained flow reactor. Review of Scientific Instruments, 91(7). https://doi.org/10.1063/5.0005733 Publication ID: 74102
  • Menon, N., Nissen, A., Campbell, J., Ryan, F., Reed, C., Hecht, E., & Hecht, E. (2020). Dispenser Reliability: Materials R&D [Conference Poster]. https://www.osti.gov/biblio/1787735 Publication ID: 73658
  • Hecht, E., Ehrhart, B., & Ehrhart, B. (2020). HyRAM simulations of LH2 hazard distances [Presentation]. https://www.osti.gov/biblio/1807437 Publication ID: 73794
  • Ehrhart, B., LaFleur, C., Hecht, E., Brooks, D., Muna, A., Blaylock, M.L., Bran Anleu, G., Sims, C., & Sims, C. (2020). Hydrogen Quantitative Risk Assessment [Presentation]. https://www.osti.gov/biblio/1779040 Publication ID: 73306
  • Hecht, E., Chowdhury, B., & Chowdhury, B. (2020). R&D for Safety Codes and Standards:Hydrogen Behavior [Conference Poster]. https://www.osti.gov/biblio/1779043 Publication ID: 73309
  • Hecht, E., Ehrhart, B., LaFleur, C., Muna, A., Vyazmina, E., Jallais, S., Bernard, L., Houssin, D., & Houssin, D. (2020). Development Validation and Benchmarking of Quantitative Risk Assessment Tools for Hydrogen Refueling Stations [Conference Poster]. https://www.osti.gov/biblio/1780961 Publication ID: 73360
  • Hecht, E. (2020). Sandia efforts to measure cryogenic hydrogen dispersion and enable separation distance reduction [Presentation]. https://www.osti.gov/biblio/1769582 Publication ID: 72940
  • LaFleur, C., Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2020). LIquiefied Hydrogen Research Update [Presentation]. https://www.osti.gov/biblio/1770278 Publication ID: 72969
  • Blaylock, M.L., Hecht, E., Jordan, C., & Jordan, C. (2020). Validation of Natural Gas Models Used in AltRAM [Conference Poster]. https://www.osti.gov/biblio/1764667 Publication ID: 72402
  • Ehrhart, B., Bran Anleu, G., Ye, D., Hecht, E., & Hecht, E. (2020). Hydrogen Refueling Reference Station Lot Size Analysis for Urban Sites [Presentation]. https://www.osti.gov/biblio/1761025 Publication ID: 70693
  • Ehrhart, B., Bran Anleu, G., Ye, D., Hecht, E., & Hecht, E. (2020). Hydrogen Refueling Reference Station Lot Size Analysis for Urban Sites [Presentation]. https://www.osti.gov/biblio/1762823 Publication ID: 70841
  • Ehrhart, B., Hecht, E., Muna, A., LaFleur, C., & LaFleur, C. (2020). Hydrogen Risk Assessment Models 2.0: Open-source quantitative risk assessment framework [Presentation]. https://www.osti.gov/biblio/1763613 Publication ID: 70907
  • Hecht, E. (2019). Capabilities in the Turbulent Combustion Lab [Presentation]. https://www.osti.gov/biblio/1646301 Publication ID: 66383
  • Ehrhart, B., Bran Anleu, G., Ye, D., Hecht, E., Muna, A., LaFleur, C., & LaFleur, C. (2019). Hydrogen Stations for Urban Sites. https://doi.org/10.2172/1570553 Publication ID: 65572
  • Ehrhart, B., LaFleur, C., Hecht, E., Blaylock, M.L., & Blaylock, M.L. (2019). Overview and Recent Developments for the Hydrogen Risk Assessment Models (HyRAM) Toolkit [Conference Poster]. https://www.osti.gov/biblio/1642829 Publication ID: 65652
  • Ehrhart, B., Bran Anleu, G., Ye, D., Hecht, E., & Hecht, E. (2019). Comparisons of Design Changes on Footprint of Hydrogen Refueling Stations for Urban Sites [Conference Poster]. https://www.osti.gov/biblio/1643003 Publication ID: 65934
  • Ehrhart, B., Klebanoff, L., Hecht, E., Headley, A., Ng, M., Markt, C., & Markt, C. (2019). Impact of Hydrogen for Rail Applications [Conference Poster]. https://www.osti.gov/biblio/1643004 Publication ID: 65935
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2019). Liquid hydrogen vent stack dispersion measurements using laser diagnostics [Conference Poster]. https://www.osti.gov/biblio/1643010 Publication ID: 65947
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2019). Characteristic of cryogenic hydrogen flames from high-aspect ratio nozzles [Conference Poster]. https://www.osti.gov/biblio/1641943 Publication ID: 64800
  • Roy Chowdhury, B., Hecht, E., & Hecht, E. (2019). Dispersion of cryogenic hydrogen through high-aspect ratio nozzles [Conference Poster]. https://www.osti.gov/biblio/1641944 Publication ID: 64801
  • Ehrhart, B., LaFleur, C., Hecht, E., Blaylock, M.L., & Blaylock, M.L. (2019). Recent Developments for the Hydrogen Risk Assessment Models (HyRAM) Toolkit [Presentation]. https://www.osti.gov/biblio/1645982 Publication ID: 65285
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2019). Characteristic of cryogenic hydrogen flames from high-aspect ratio nozzles [Conference Poster]. https://www.osti.gov/biblio/1641124 Publication ID: 69679
  • Roy Chowdhury, B., Hecht, E., & Hecht, E. (2019). Dispersion of cryogenic hydrogen through high-aspect ratio nozzles [Conference Poster]. https://www.osti.gov/biblio/1641138 Publication ID: 69685
  • Jordan, C., Blaylock, M.L., Hecht, E., & Hecht, E. (2019). Model Validation of Natural Gas Jet and Flames [Presentation]. https://www.osti.gov/biblio/1807104 Publication ID: 69888
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2019). Hydrogen behavior research as a foundation for codes & standards [Presentation]. https://www.osti.gov/biblio/1645435 Publication ID: 69248
  • Hecht, E. (2019). Cryogenic hydrogen behavior [Presentation]. https://www.osti.gov/biblio/1645207 Publication ID: 68405
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2019). Codes & Standards Tech Team Update: Cryogenic Hydrogen Behavior [Presentation]. https://www.osti.gov/biblio/1645232 Publication ID: 68501
  • Menon, N., Hecht, E., Longfield, T., Nissen, A., Campbell, J., Peters, M., & Peters, M. (2019). Dispenser Reliability R&D: Materials compatibility [Conference Poster]. https://www.osti.gov/biblio/1639681 Publication ID: 67927
  • Li, X., Chen, Q., Chen, M., He, Q., Christopher, D.M., Cheng, X., Roy Chowdhury, B., Hecht, E., & Hecht, E. (2019). Modeling of underexpanded hydrogen jets through square and rectangular slot nozzles. International Journal of Hydrogen Energy, 44(12), pp. 6353-6365. https://doi.org/10.1016/j.ijhydene.2019.01.079 Publication ID: 59739
  • Hecht, E. (2019). Cryogenic hydrogen flow measurements [Conference Poster]. https://www.osti.gov/biblio/1639278 Publication ID: 67302
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2019). R&D for Safety Codes and Standards: Hydrogen Behavior [Conference Poster]. https://www.osti.gov/biblio/1639292 Publication ID: 67332
  • Ehrhart, B., Bran Anleu, G., Ye, D., Hecht, E., Muna, A., Sena, E., LaFleur, C., Rivkin, C., & Rivkin, C. (2019). Hydrogen Stations for Urban Sites [Presentation]. https://www.osti.gov/biblio/1644467 Publication ID: 67335
  • Ehrhart, B., Bran Anleu, G., Ye, D., Hecht, E., Muna, A., Sena, E., LaFleur, C., Rivkin, C., & Rivkin, C. (2019). Reference Design of Hydrogen Stations for Urban Sites [Presentation]. https://www.osti.gov/biblio/1644514 Publication ID: 67468
  • Ehrhart, B., Klebanoff, L., Hecht, E., Headley, A., Ng, M., Markt, C., & Markt, C. (2019). Impact of Hydrogen for Rail Applications [Conference Poster]. https://www.osti.gov/biblio/1639495 Publication ID: 67647
  • Roy Chowdhury, B., Hecht, E., & Hecht, E. (2019). FLAME CHARACTERISTICS OF CRYOGENIC HYDROGEN RELEASES FROM HIGH-ASPECT RATIO NOZZLES [Conference Poster]. https://www.osti.gov/biblio/1639558 Publication ID: 67736
  • Roy Chowdhury, B., Hecht, E., & Hecht, E. (2019). IGNITION AND FLAME CHARACTERISTICS OF CRYOGENIC HYDROGEN RELEASES FROM HIGH-ASPECT RATIO NOZZLES [Conference Poster]. https://www.osti.gov/biblio/1639250 Publication ID: 67248
  • Hecht, E. (2019). Quantitative risk assessment of LH2 systems: data and model needs [Conference Poster]. https://www.osti.gov/biblio/1639254 Publication ID: 67265
  • Muna, A., LaFleur, C., Hecht, E., Ehrhart, B., Chowdhury, B., McDaniel, A., Bisson, S., & Bisson, S. (2019). Development Validation and Benchmarking of Quantitative Risk Assessment Tools for Hydrogen Refueling Stations [Presentation]. https://www.osti.gov/biblio/1876741 Publication ID: 67273
  • Ehrhart, B., Bran Anleu, G., Hecht, E., LaFleur, C., Muna, A., Sena, E., Rivkin, C., Pratt, J., & Pratt, J. (2019). Update to DOE Staff on Hydrogen Reference Stations for Urban Sites [Presentation]. https://www.osti.gov/biblio/1583021 Publication ID: 64193
  • Egbert, S., Li, X., Blaylock, M.L., Hecht, E., & Hecht, E. (2018). Mixing of Liquid Methane Releases. https://doi.org/10.2172/1488323 Publication ID: 60469
  • LaFleur, C., Hecht, E., Ronevich, J., Muna, A., & Muna, A. (2018). Sandia National Lobs Safety Codes & Standards Capabilities [Presentation]. https://www.osti.gov/biblio/1882498 Publication ID: 60131
  • Hecht, E. (2018). The science behind liquid hydrogen fueling station footprint reduction [Presentation]. https://www.osti.gov/biblio/1575155 Publication ID: 60267
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2018). Scientific analyses to support liquid hydrogen footprint reduction [Presentation]. https://www.osti.gov/biblio/1593007 Publication ID: 59800
  • Muna, A., Ehrhart, B., Hecht, E., Bran Anleu, G., Blaylock, M.L., LaFleur, C., & LaFleur, C. (2018). Hydrogen Quantitative Risk Assessment. https://doi.org/10.2172/1481561 Publication ID: 59809
  • Hecht, E. (2018). Cryogenic hydrogen behavior and research priorities [Presentation]. https://www.osti.gov/biblio/1592062 Publication ID: 58874
  • Ehrhart, B., Bran Anleu, G., Hecht, E., & Hecht, E. (2018). H2FIRST Reference Stations for Urban Sites Overview Slide [Conference Poster]. https://www.osti.gov/biblio/1592240 Publication ID: 58969
  • Hecht, E., Ehrhart, B., Bran Anleu, G., & Bran Anleu, G. (2018). Summary of liquid H2 research at Sandia National Laboratories [Conference Poster]. https://www.osti.gov/biblio/1806844 Publication ID: 59127
  • Ehrhart, B., Bran Anleu, G., Hecht, E., Muna, A., Sena, E., Rivkin, C., & Rivkin, C. (2018). Reference Stations for Urban Sites Workshop [Presentation]. https://www.osti.gov/biblio/1561439 Publication ID: 64110
  • Ehrhart, B., Bran Anleu, G., Hecht, E., LaFleur, C., Muna, A., Sena, E., & Sena, E. (2018). Codes and Standards Tech Team: Hydrogen Stations for Urban Sites [Presentation]. https://www.osti.gov/biblio/1576169 Publication ID: 63548
  • Shaddix, C., Hecht, E., Gonzalo-Tirado, C., Haynes, B., & Haynes, B. (2018). The Effect of Bulk Gas Diffusivity on Apparent Pulverized Coal Char Combustion Kinetics [Conference Poster]. https://doi.org/10.1016/j.proci.2018.07.060 Publication ID: 63986
  • Roy Chowdhury, B., Hecht, E., & Hecht, E. (2018). Simultaneous Measurement of Concentration and Velocity of High-pressure Hydrogen Releases [Conference Poster]. https://www.osti.gov/biblio/1569196 Publication ID: 63011
  • Muna, A., Hecht, E., Ehrhart, B., LaFleur, C., Roy Chowdhury, B., McDaniel, A., Bisson, S., & Bisson, S. (2018). Development Validation and Benchmarking of Quantitative Risk Assessment Tools for Hydrogen Refueling Stations [Presentation]. https://www.osti.gov/biblio/1806617 Publication ID: 63236
  • Shaddix, C., Hecht, E., Gonzalo-Tirado, C., Haynes, B., & Haynes, B. (2018). The Effect of Bulk Gas Diffusivity on Apparent Pulverized Coal Char Combustion Kinetics [Conference Poster]. https://doi.org/10.1016/j.proci.2018.07.060 Publication ID: 63379
  • Bran Anleu, G., Ehrhart, B., Hecht, E., LaFleur, C., Muna, A., Rivkin, C., Pratt, J., & Pratt, J. (2018). Hydrogen Stations for Urban Sites [Presentation]. https://www.osti.gov/biblio/1526134 Publication ID: 62519
  • Hecht, E. (2018). Safety Codes and Standards and the HyRAM toolkit [Presentation]. https://www.osti.gov/biblio/1524839 Publication ID: 62366
  • Hecht, E. (2018). Hydrogen behavior R&D for Safety Codes and Standards at Sandia National Labs [Presentation]. https://www.osti.gov/biblio/1507477 Publication ID: 61461
  • Hecht, E., Roy Chowdhury, B., Bisson, S., McDaniel, A., & McDaniel, A. (2018). How to see and quantify hydrogen concentration (and cryogenic hydrogen) using optical diagnostics [Presentation]. https://www.osti.gov/biblio/1508900 Publication ID: 61631
  • Hecht, E., Roy Chowdhury, B., McDaniel, A., Bisson, S., & Bisson, S. (2018). R&D for Safety Codes and Standards: Hydrogen Behavior [Presentation]. https://www.osti.gov/biblio/1508901 Publication ID: 61632
  • LaFleur, C., Muna, A., Hecht, E., Ehrhart, B., McDaniel, A., Bisson, S., Roy Chowdhury, B., & Roy Chowdhury, B. (2018). Development, Validation, and Benchmarking of Quantitative Risk Assessment Tools for Hydrogen Refueling Stations [Presentation]. https://www.osti.gov/biblio/1877564 Publication ID: 61668
  • Ehrhart, B., Bran Anleu, G., Hecht, E., LaFleur, C., Muna, A., Sena, E., Rivkin, C., Pratt, J., & Pratt, J. (2018). Hydrogen Stations for Urban Sites [Presentation]. https://www.osti.gov/biblio/1508694 Publication ID: 61670
  • Hecht, E., Roy Chowdhury, B., & Roy Chowdhury, B. (2018). Experimental validation of a model for cryogenic hydrogen jet dispersion [Conference Poster]. https://www.osti.gov/biblio/1503433 Publication ID: 61217
  • Shaddix, C., Hecht, E., Gonzalo-Tirado, C., & Gonzalo-Tirado, C. (2018). The Effect of Oxygen Penetration on Apparent Pulverized Coal Char Combustion Kinetics [Conference Poster]. https://www.osti.gov/biblio/1505289 Publication ID: 61393
  • Shaddix, C., Hecht, E., Gonzalo-Tirado, C., & Gonzalo-Tirado, C. (2018). The effect of oxygen penetration on apparent pulverized coal char combustion kinetics [Conference Poster]. 2018 Spring Technical Meeting of the Western States Section of the Combustion Institute, WSSCI 2018. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85048984699&origin=inward Publication ID: 61290
  • Hecht, E. (2017). Hazard and consequence modeling applicable to safety codes and standards [Presentation]. https://www.osti.gov/biblio/1481498 Publication ID: 54032
  • Hecht, E. (2017). Current research and future outlook for behavior and consequence modeling [Presentation]. https://www.osti.gov/biblio/1481499 Publication ID: 54033
  • Hecht, E. (2017). October 2017 Codes & Standards Tech Team Update: Building Knowledge of Cryogenic Hydrogen Behavior [Presentation]. https://www.osti.gov/biblio/1478151 Publication ID: 53554
  • Hecht, E., Panda, P., & Panda, P. (2017). Mixing and warming of cryogenic hydrogen releases [Conference Poster]. https://doi.org/10.1016/j.ijhydene.2018.07.058 Publication ID: 58428
  • Hecht, E., Panda, P., & Panda, P. (2017). Mixing and Warming of Cryogenic Hydrogen Releases [Conference Poster]. https://doi.org/10.1016/j.ijhydene.2018.07.058 Publication ID: 57443
  • Hecht, E. (2017). R&D for Safety Codes and Standards: Hydrogen Behavior [Conference Poster]. https://www.osti.gov/biblio/1457938 Publication ID: 56197
  • Hecht, E., Pratt, J., & Pratt, J. (2017). Reference Station Design Phase II: Comparison of conventional vs. modular hydrogen refuling stations and on-site production vs. delivery [Conference Poster]. https://www.osti.gov/biblio/1457953 Publication ID: 56251
  • Blaylock, M.L., Bozinoski, R., Ehrhart, B., Hecht, E., LaFleur, C., Muna, A., & Muna, A. (2017). Gaseous Fuel Facility Analysis (Natural Gas and Propane Vehicles) [Presentation]. https://www.osti.gov/biblio/1456464 Publication ID: 55699
  • Groth, K.M., Hecht, E., & Hecht, E. (2017). HyRAM: A methodology and toolkit for quantitative risk assessment of hydrogen systems [Conference Poster]. International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2016.07.002 Publication ID: 44461
  • Hecht, E. (2017). Validation data for models of cryogenic hydrogen releases and flames [Presentation]. https://www.osti.gov/biblio/1425319 Publication ID: 55171
  • Hecht, E., Pratt, J., & Pratt, J. (2017). Comparison of conventional vs. modular hydrogen refueling stations and on-site production vs. delivery. https://doi.org/10.2172/1347655 Publication ID: 55382
  • Hecht, E., Pratt, J., & Pratt, J. (2017). Comparison of conventional vs. modular hydrogen refueling stations, and on-site production vs. delivery. https://doi.org/10.2172/1481211 Publication ID: 55397
  • Groth, K.M., Hecht, E., Reynolds, J., Blaylock, M.L., Carrier, E., & Carrier, E. (2017). Methodology for assessing the safety of Hydrogen Systems: HyRAM 1.1 technical reference manual. https://doi.org/10.2172/1365456 Publication ID: 55460
  • Hecht, E., Panda, P., & Panda, P. (2017). Mixing and Warming of Cryogenic Hydrogen Releases [Conference Poster]. https://www.osti.gov/biblio/1456386 Publication ID: 55587
  • Hecht, E., Blaylock, M.L., & Blaylock, M.L. (2017). Research on fundamental hydrogen physics with application to safety codes and standards [Presentation]. https://www.osti.gov/biblio/1458316 Publication ID: 54897
  • Panda, P.P., Hecht, E., & Hecht, E. (2017). Ignition and flame characteristics of cryogenic hydrogen releases. International Journal of Hydrogen Energy, 42(1), pp. 775-785. https://doi.org/10.1016/j.ijhydene.2016.08.051 Publication ID: 50807
  • Díaz-Ibarra, O., Spinti, J., Smith, P., Shaddix, C., Hecht, E., & Hecht, E. (2017). Validation and uncertainty quantification analysis (VUQ) of a char oxidation model [Conference Poster]. 10th U.S. National Combustion Meeting. https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85048878927&origin=inward Publication ID: 56031
  • Hecht, E., Panda, P.P., & Panda, P.P. (2016). Validation data for cryogenic hydrogen releases and flames [Presentation]. https://www.osti.gov/biblio/1415722 Publication ID: 47770
  • Hecht, E., Panda, P.P., & Panda, P.P. (2016). Validation data for cryogenic hydrogen releases and flames [Presentation]. https://www.osti.gov/biblio/1400063 Publication ID: 47156
  • Hecht, E. (2016). Non-premixed Hydrogen Combustion [Conference Poster]. https://www.osti.gov/biblio/1395747 Publication ID: 52471
  • Hecht, E. (2016). Accidental Hydrogen Ignition [Conference Poster]. https://www.osti.gov/biblio/1395748 Publication ID: 52472
  • Hecht, E. (2016). Cryogenic Hydrogen Plume Behavior [Conference Poster]. https://www.osti.gov/biblio/1395794 Publication ID: 52473
  • Hecht, E., Panda, P.P., & Panda, P.P. (2016). Liquid Hydrogen Behavior Studies June 27 2016 [Presentation]. https://www.osti.gov/biblio/1368466 Publication ID: 50808
  • Hecht, E., Panda, P.P., & Panda, P.P. (2016). Liquid Hydrogen Behavior Studies [Presentation]. https://www.osti.gov/biblio/1365042 Publication ID: 49325
  • Hecht, E., Panda, P.P., & Panda, P.P. (2016). R&D for Safety Codes and Standards: Hydrogen Behavior [Conference Poster]. https://www.osti.gov/biblio/1365283 Publication ID: 49627
  • Hecht, E., Panda, P.P., & Panda, P.P. (2016). State of the Cryogenic Hydrogen Release Lab [Presentation]. https://www.osti.gov/biblio/1347650 Publication ID: 48913
  • Keller, J., Hill, L., Kiuru, K., Groth, K.M., Hecht, E., James, W., & James, W. (2016). HySafe research priorities workshop report Summary of the workshop organized in cooperation with US DOE and supported by EC JRC in Washington DC November 10-11 2014. https://doi.org/10.2172/1561166 Publication ID: 49041
  • Hecht, E., Panda, P.P., & Panda, P.P. (2016). Turbulent Combustion Laboratory Overview [Presentation]. https://www.osti.gov/biblio/1342477 Publication ID: 46853
  • Groth, K.M., Hecht, E., Reynolds, J., & Reynolds, J. (2015). Methodology for assessing the safety of Hydrogen Systems: HyRAM 1.0 technical reference manual. https://doi.org/10.2172/1814840 Publication ID: 41690
  • Hecht, E., Panda, P.P., & Panda, P.P. (2015). Validation data for releases from cryogenic hydrogen sources [Presentation]. https://www.osti.gov/biblio/1331865 Publication ID: 46502
  • Groth, K.M., Hecht, E., & Hecht, E. (2015). HyRAM: A methodology and toolkit for QRA of hydrogen systems [Conference Poster]. https://www.osti.gov/biblio/1334067 Publication ID: 46064
  • Li, X., Hecht, E., Ekoto, I., & Ekoto, I. (2015). Validated equivalent source model for an underexpanded hydrogen jet [Conference Poster]. https://www.osti.gov/biblio/1332893 Publication ID: 46136
  • Hecht, E., Zimmerman, M., LaFleur, C., Ciotti, M., & Ciotti, M. (2015). Design of the cryogenic hydrogen release laboratory. https://doi.org/10.2172/1214305 Publication ID: 45387
  • Adams, W., Hecht, E., & Hecht, E. (2015). Rayleigh Scattering Combustion Diagnostic [Presentation]. https://www.osti.gov/biblio/1339590 Publication ID: 44620
  • LaFleur, C., Hecht, E., Ekoto, I., & Ekoto, I. (2015). Cryogenic Hydrogen Release Modeling Validation ? Update for Hydrogen Safety Panel [Presentation]. https://www.osti.gov/biblio/1248648 Publication ID: 42908
  • Hecht, E., Li, X., Ekoto, I., & Ekoto, I. (2015). Validated equivalent source model for an underexpanded hydrogen jet [Conference Poster]. https://www.osti.gov/biblio/1249300 Publication ID: 43171
  • Hecht, E., Shaddix, C., & Shaddix, C. (2015). Coal Combustion and Gasification Science [Conference Poster]. https://www.osti.gov/biblio/1251359 Publication ID: 43259
  • Hecht, E. (2015). Coal Combustion and Gasification Science [Conference Poster]. https://www.osti.gov/biblio/1246269 Publication ID: 42468
  • Hecht, E., LaFleur, C., Ekoto, I., & Ekoto, I. (2015). Cryogenic Hydrogen Release Modeling Validation – Update for Hydrogen Safety Panel [Presentation]. https://www.osti.gov/biblio/1240258 Publication ID: 42267
  • Hecht, E., ekoto, I., Ruggles, A., & Ruggles, A. (2014). State of the art for gaseous release models [Conference Poster]. https://www.osti.gov/biblio/1505043 Publication ID: 39519
  • Hecht, E., ekoto, I., & ekoto, I. (2014). Vision for validating the liquid hydrogen plume model at temperatures less than 80K [Conference Poster]. https://www.osti.gov/biblio/1505044 Publication ID: 39520
  • Hecht, E., Shaddix, C., & Shaddix, C. (2014). Understanding the complexities of enhanced oxygen high temperature pulverized coal char combustion [Presentation]. https://www.osti.gov/biblio/1503122 Publication ID: 38929
  • Hecht, E., Shaddix, C., & Shaddix, C. (2014). Understanding the complexities of enhanced oxygen high temperature pulverized coal char combustion [Presentation]. https://www.osti.gov/biblio/1503123 Publication ID: 38930
  • Hecht, E., Shaddix, C., Geier, M., & Geier, M. (2014). Experimental Determination of the Kinetics of Pressurized Oxy-Fuel Char Combustion [Conference Poster]. https://www.osti.gov/biblio/1315125 Publication ID: 38983
  • Ekoto, I., Hecht, E., San Marchi, C., Groth, K.M., LaFleur, C., Natesan, N., Ciotti, M., Harris, A., & Harris, A. (2014). Liquid Hydrogen Release Risk and Behavior Modeling: State-of-the-Art Knowledge Gaps and Research Needs for Refueling Infrastructure Safety. https://doi.org/10.2172/1160297 Publication ID: 39080
  • Hecht, E., Shaddix, C., Geier, M., & Geier, M. (2014). EXPERIMENTAL DETERMINATION OF THE KINETICS OF PRESSURIZED OXY-FUEL CHAR COMBUSTION [Conference Poster]. https://www.osti.gov/biblio/1315126 Publication ID: 38358
  • Hecht, E., Geier, M., Iqbal, S., Shaddix, C., & Shaddix, C. (2014). Experimental Determination of the Kinetics of Pressurized Oxy-fuel Char Combustion [Presentation]. https://www.osti.gov/biblio/1497607 Publication ID: 38043
  • Iqbal, S., Hecht, E., & Hecht, E. (2014). Temperature Trends in Coal Char Combustion under Oxy-fuel Conditions for the Determination of Kinetics. https://doi.org/10.2172/1171556 Publication ID: 38186
  • Hecht, E., Ekoto, I., San Marchi, C., & San Marchi, C. (2014). Modeling Plumes from Cryogenic Hydrogen Sources [Presentation]. https://www.osti.gov/biblio/1494243 Publication ID: 37760
  • Staats, W., Hecht, E., Spencer, N., Smith, K., Vanness, J., Gorman, R., Koplow, J., Johnson, T., Curgus, D., Leick, M., Matthew, N., Zimmerman, M., Arienti, M., Gharagozloo, P., & Gharagozloo, P. (2014). The Sandia Cooler: A fundamentally new approach to air cooled heat exchangers [Presentation]. https://www.osti.gov/biblio/1706540 Publication ID: 40560
  • Hecht, E. (2014). SNL Behavior Modeling — Research path & planned LH2 Experiments [Conference]. https://www.osti.gov/biblio/1140832 Publication ID: 40091
  • Hecht, E., Stavila, V., Klebanoff, L., & Klebanoff, L. (2014). An Investigation into the Hydrogen Storage Characteristics of Ca(BH4)2:LiNH2 and Ca(BH4)2:NaNH2: Evidence of Intramolecular Destabilization. The Journal of Physical Chemistry. https://www.osti.gov/biblio/1141574 Publication ID: 40168
  • Shaddix, C., Hecht, E., Geier, M., & Geier, M. (2014). The Multifaceted Influence of CO2 on Oxy-fuel Combustion of Pulverized Coal [Presentation]. https://www.osti.gov/biblio/1684771 Publication ID: 36970
  • Johnson, T., Hecht, E., Spencer, N., Vanness, J., Gorman, R., Koplow, J., Staats, W., Curgus, D., Leick, M., Matthew, N., Zimmerman, M., Arienti, M., Gharagozloo, P., & Gharagozloo, P. (2013). Development of the Sandia Cooler. https://doi.org/10.2172/1121984 Publication ID: 31992
  • Shaddix, C., Hecht, E., Geier, M., & Geier, M. (2013). The Influence of CO2 on Oxy-fuel Combustion of Pulverized Coal [Conference]. https://www.osti.gov/biblio/1107686 Publication ID: 35291
  • Staats, W., Matthew, N., Hecht, E., Johnson, T., Koplow, J., & Koplow, J. (2013). Heat Transfer and Pressure Drop Performance of the Air Bearing Heat Exchanger [Conference]. https://www.osti.gov/biblio/1111765 Publication ID: 34343
  • Shaddix, C., Hecht, E., & Hecht, E. (2013). Evaluation of Light-Off Limits for a Novel Oxy-Combustion Process for Advanced EOR. Energy&Fuels. https://www.osti.gov/biblio/1078848 Publication ID: 33143
  • Shaddix, C., Hecht, E., Geier, M., & Geier, M. (2013). The influence of CO2 on oxy-fuel combustion of pulverized coal [Conference]. https://www.osti.gov/biblio/1078916 Publication ID: 33144
  • Hecht, E. (2013). Review on the effects of hydrogen at extreme pressures and temperatures on the mechanical behavior of polymers. https://doi.org/10.2172/1095947 Publication ID: 32740
  • Hecht, E., Shaddix, C., & Shaddix, C. (2012). Analysis of the errors associated with typical pulverized coal char combustion modeling assumptions for oxy-fuel combustion. Proposed for publication in Combustion and Flame.. https://www.osti.gov/biblio/1063456 Publication ID: 26264
  • Shaddix, C., Hecht, E., & Hecht, E. (2012). Evaluation of Light-Off Limits for a Novel Oxy-Combustion Process for Advanced EOR [Conference]. https://www.osti.gov/biblio/1062901 Publication ID: 25795
  • Hecht, E., Shaddix, C., & Shaddix, C. (2011). Experimental investigations of pulverized coal char reactions with oxygen carbon dioxide and steam [Conference]. https://www.osti.gov/biblio/1106862 Publication ID: 24437
  • Hecht, E., Shaddix, C., Geier, M., & Geier, M. (2011). Effect of CO2 and steam gasifcation reactions on the oxy-combustion of pulverized coal char. Combustion and Flame. https://www.osti.gov/biblio/1107067 Publication ID: 23697
  • Hecht, E., Shaddix, C., Houf, W., & Houf, W. (2011). Evaluation of Light-Off Limits for a Novel Oxy-Combustion Process for Advanced EOR [Conference]. https://www.osti.gov/biblio/1110256 Publication ID: 21535
  • Shaddix, C., Hecht, E., Geier, M., & Geier, M. (2011). Evaluation of the Combustion Rates of Lignin Residues from Cellulosic Ethanol Production [Conference]. https://www.osti.gov/biblio/1110249 Publication ID: 21544
  • Shaddix, C., Hecht, E., Geier, M., & Geier, M. (2010). Effect of Particle Size on Oxy-Fuel Combustion Rates of Pulverized Coal [Presentation]. https://www.osti.gov/biblio/1673918 Publication ID: 20847
  • Shaddix, C., Hecht, E., Teh, K., Buffleben, G., Dibble, D., & Dibble, D. (2010). Development of efficient, integrated cellulosic biorefineries : LDRD final report. https://doi.org/10.2172/1011225 Publication ID: 20304
  • Shaddix, C., Hecht, E., Geier, M., & Geier, M. (2010). Effect of gasification reactions on oxy-fuel combustion of pulverized coal char [Conference]. https://www.osti.gov/biblio/1016996 Publication ID: 18468
  • McDaniel, A., Hecht, E., & Hecht, E. (2008). Analysis of the effect of ripple currents on the electrical behavior of a single cell solid oxide fuel cell. Proposed for publication in Journal of Power Systems.. https://www.osti.gov/biblio/966606 Publication ID: 15372
  • Hecht, E. (2005). Solid oxide fuel cell reactor for selective oxidation of hydrocarbons [Conference]. https://www.osti.gov/biblio/969562 Publication ID: 5817
Showing 10 of 164 publications.

Awards

2015

2011