The temperature gradient along the vessel height is important for avoiding losses of volatile elements.
The proposed reactor pressure vessel height and the containment volume are 30% lower than the reference IRIS design.
The reactor vessel height is equal to that of a typical loop-type demonstration FBR vessel to obtain natural circulation head.
d_{text{e}} = D*left[ {1 + frac{2omega }{n}left( {frac{{pi hKD^{2} }}{2T}} right)^{1/n} } right]^{ - n/2} (1 where T is the generated torque at shaft speed ω, D is the vessel diameter, n is the flow behavior index, K is the consistency coefficient, and h is the vessel height.
As much important as keeping a hydride buffer vessel pressure in a hydride bed system, similar tendency was studied in the tank efflux system; i.e., to keep the secondary vessel height there needs a certain amount of liquid flow from the upper tank and the tank height difference.
The bulk flow velocities, averaged over 360° of impeller rotation, showed an axial jet with a ring vortex encompassing two-thirds of the vessel height, swirl velocity proportional to radius beneath the impeller as in solid body rotation and counter-rotating vortices behind the baffles.
The scans in the most sensitive regions with respect to RF frequency, such as modulation, tips, base-vane width and vessel height provided the values of the cavity deviations from nominal geometry to be compared with design physic-driven tolerances and with RF measurements.
Each root vessel (height 700 mm, diameter 80 mm) had a lid with two openings for plants.
Also, the wider beam increased the vessels' metacentric height, a quality in which the Delawares were notably deficient.
Increasing the reactor thermal power or the in-vessel chimney height increases the flow rate of the in-vessel liquid sodium by natural circulation, but decreases its exit temperature from the reactor core.
