Energy and Climate

Nuclear Energy Systems Laboratory

Mechanical Testing

On March 26, 2014, in

Mechanical Testing Overview  ASTM standard (E8) used for tension testing guidance, with tests in constant displacement mode 2 tests were performed, room temperature and at 650°C Post mortem metallography was performed on both samples Room Temperature Tensile Test  Room Temperature Metallography Voids were observed in bond lines away from fracture surface. Unclear if voids were […]

Diffusion Bonding Characterization

On March 26, 2014, in

Diffusion Bond Characterization  Research Goal:  Diffusion bond strength, defects, and corrosion behavior must be understood before they can be reliably used in reactor systems.              Diffusion Bond Process Plates were chemically cleaned and electroplated with nickel to prevent surface oxidation which would impair bonding process Actual process variables are proprietary […]

Heat Exchanger Development

On March 26, 2014, in

Planned Heat Exchanger Test Loop Capabilities 500 kW Heaters (Elec.) 500 kW Gas Cooler Unbalanced flows Dedicated system accepts novel mixtures and additives Facility Goal: Provide testing capability for 1 MW-scale commercial and prototype heat exchangers used at any position in current and future Brayton layouts Path Forward to Commercialization What we are going to […]

Nuclear Energy Systems Laboratory (NESL) / Transient Nuclear Fuels Testing

On May 1, 2013, in

Sandia National Laboratories is home to the United States’ only operational pulsed nuclear reactor capable of a comprehensive range of transient nuclear fuels testing. The Annular Core Research Reactor (ACRR) was specially designed to provide high power pulses (up to 300-MJ) in very short amounts of time (6-millisecond pulse-width), which allows the ACRR to compete […]

Nuclear Energy Systems Laboratory (NESL) / Brayton Lab

On June 5, 2012, in

Sandia National Labs has established the Nuclear Energy Systems Laboratory (NESL) / Brayton Lab to research and develop closed Brayton cycle (CBC) technology for highly efficient thermal-to-electric power conversion.  While CBC’s have generated power since 1939 using air as the working fluid, the testing at Sandia’s Brayton Lab uses supercritical carbon dioxide (SCO2) in a […]