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CSIRO develops new generation heat exchanger 'RAMeX'
25 Jun '07
3 min read
Like the earlier RAM technology, development of the RAMeX relied on the use of advanced mathematics and simulation technology to fast track the development of an operational RAMeX.
“Trials have shown the RAMeX now provides a single solution to the task of mixing and temperature control in highly viscous fluids, used for example in food processing, polymer processing and in the mixing of explosives,” Dr Metcalfe said
Laboratory trials of the CSIRO RAMeX have shown it produces homogenous heating or cooling through a smaller heat exchange unit at a faster rate than can be matched by typical mixers using shell-in- tube (jackets) or annular (tube-in-tube) heat exchangers.
The CSIRO RAMeX offers plant with a smaller footprint and is expected to be less expensive to manufacture than most current mixers. It can be used as a batch mixer or for in-line continuous mixing.
The CSIRO RAMeX design is similar to the earlier generation tube shaped RAM mixers, allowing for the easy application of selected heating mediums such as water, or steam.
The simple design removes the need for internal baffles and plates used in static mixers that generate large pressure drops and energy use.
The development of a pilot RAMeX has built on the advantages of the earlier RAM Mixer such as:
• mixes twice as well as an equivalent commonly used static mixer
• consumes five times less energy
• offers low shear effective mixing
• produces no stagnant regions
• is easy to clean
• has no internal surfaces (baffles, plates, etc.) to produce material build up
• easy to scale-up to plant - flow fields are the same irrespective of size
• easily handles very high viscosity fluids
The RAMeX is CSIRO patented technology now ready for commercial development.
“Trials have shown the RAMeX now provides a single solution to the task of mixing and temperature control in highly viscous fluids, used for example in food processing, polymer processing and in the mixing of explosives,” Dr Metcalfe said
Laboratory trials of the CSIRO RAMeX have shown it produces homogenous heating or cooling through a smaller heat exchange unit at a faster rate than can be matched by typical mixers using shell-in- tube (jackets) or annular (tube-in-tube) heat exchangers.
The CSIRO RAMeX offers plant with a smaller footprint and is expected to be less expensive to manufacture than most current mixers. It can be used as a batch mixer or for in-line continuous mixing.
The CSIRO RAMeX design is similar to the earlier generation tube shaped RAM mixers, allowing for the easy application of selected heating mediums such as water, or steam.
The simple design removes the need for internal baffles and plates used in static mixers that generate large pressure drops and energy use.
The development of a pilot RAMeX has built on the advantages of the earlier RAM Mixer such as:
• mixes twice as well as an equivalent commonly used static mixer
• consumes five times less energy
• offers low shear effective mixing
• produces no stagnant regions
• is easy to clean
• has no internal surfaces (baffles, plates, etc.) to produce material build up
• easy to scale-up to plant - flow fields are the same irrespective of size
• easily handles very high viscosity fluids
The RAMeX is CSIRO patented technology now ready for commercial development.
Commonwealth Scientific and Industrial Research Organisation
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