Collection of ENEA technology and expertise
SIRIO FACILITY
Application sectors
Problem to solve
Perform thermalhydraulic tests at high pressure and temeprature with mutiphase fluid (water-steam-air).
Description
SIRIO is a branched natural circulation loop operting at 200 bar and up to 470°C, with 3/4" tubing. A 110kW electrical steam generator is located in the bottom part of the loop. From this starts a riser for ~26m of height. At the top of the riser the loop branches into two descending lines that rejoins approximately 4 m above the steam generators. Both lines can be isolated by means of pneumatic valves placed at the two branching point (top & bottom). Each branch houses a shell-and-tube heat exchanger. The first is atwo tubes exchanger of approximately 1.5m length. The second is a single tube of ~0.5m in a large pool.Below the latter is a tee plenum with a line going to a tank for gas. Such line is siolated by means of a pneumatic valve.
Innovative aspects and advantages
- Can measure precisely the void fraction (loaded water is weighted)
- Purposefully injects non-condensable gas in a controlled way
- Works at high temperature and pressure
Admissible applications
- Characterization of instruments for multiphase flow (water-steam-air)
- Characterization of the effects of non-condensable gas in a shell-and-tube heat exchanger.
Research group involved
Revision date
26-05-2025
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