TESTING
What tests have we done and what do they show?
Ohmic volumetric heating is used to simulate Natural Circulation Flow at low temperatures by using salt water and electric current as an energy input.
Fluid is heated at low point in the core, as temperature increases the fluid rises like a hot air balloon.
Heat is removed at high point, and cooling increases fluid density and fluid sinks.
Natural Circulation Flow is generated by coupling these two processes.
Natural Circulation in Prototypic Geometry/ Volumetric Ohmic Heating
![Screen Shot 2021-12-14 at 3.01.20 PM](https://micronucleartech.com/wp-content/uploads/2023/07/Screen-Shot-2021-12-14-at-3.01.20-PM-300x208.webp)
Ohmic heating testing facilitates tests used to validate computational thermal hydraulic models using low temperature salt water. The process provides nearly identical simulation of actual molten salt at zero cost compared to reactor testing.
Fountain Test
![slide 11](https://micronucleartech.com/wp-content/uploads/2023/07/slide-11-1-222x300.webp)
Demonstrated volumetric heat input could generate adequate temperature rise in the saltwater mixture.
MsNB Ohmic Heating Test Results
![msnb testing revision 2](https://micronucleartech.com/wp-content/uploads/2023/07/msnb-testing-revision-2-300x145.webp)
Test data illustrates system temperature changes starting from initial zero heat output and with increasing load. Response is stable and predictable.
Loop Test
![loop test](https://micronucleartech.com/wp-content/uploads/2023/07/loop-test-225x300.webp)
Loop test coupled volumetric heating with cooling to generate and confirm observable natural circulation flow
Control Rod Angular Worth
![slide 18](https://micronucleartech.com/wp-content/uploads/2023/07/slide-18-300x180.webp)
Computer simulation demonstrating MsNB controllability with rotating control drum design.
Thermal Effects: Negative Temperature Coefficient
![Slide 19](https://micronucleartech.com/wp-content/uploads/2023/07/Slide-19-300x224.webp)
Estimates demonstrate MsNB passive safety, as core temperature increases, power decreases.
MsNB reactor power automatically shuts down if there is and unintended temperature increase
Burnup Simulation Results
![slide 20](https://micronucleartech.com/wp-content/uploads/2023/07/slide-20.webp)
Demonstrates the ability of MsNB is to operate for ten years.
Neutronics Modeling
![slide 22](https://micronucleartech.com/wp-content/uploads/2023/07/slide-22-300x166.webp)
Presents results of MsNB neutronic activity at different elevations in the reactor.
400 KWth MsNB
![revision comp 2](https://micronucleartech.com/wp-content/uploads/2023/07/revision-comp-2-300x106.webp)
Simplified overview of MsNB design with natural circulation – Initial CFD Model