The helical coil steam generator is a specific type of Tube and Shell Heat Exchanger known for having a higher heat transfer coefficient than many other designs.
We have designed, constructed, and operated three test facilities with main focus on the shell side flow for a specific design of the helical coil steam generator. The three facilities include:
- one-to-one curved single interface between bundles,
- one-to-one curved five bundle test section and
- one-to-one straight five bundle test section.
Studies focus on the effect the complex geometry plays on flow properties. The state of the art facilities use refractive index matching Particle Image Velocimetry (PIV), Laser Doppler Anenometry (LDA), and Hot Film Anenometry, to study the cross-flow behavior of the fluid between bundles.
Pressure measurements across the bundles are also conducted to compare the effect that the different geometry has on current tube and shell pressure drop correlations. Dynamic Pressure Transducers and Pressure Sensitive Paint (PSP) are also used to study the change in pressure around the surface of the individual rods within a bundle.