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Global Transfer System TechnologyGlobal Transfer System, or GTS for short, is the patented technology that lies at the heart of the DE Dry Energy series of dryers. |
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Global Transfer System TechnologyGlobal Transfer System, or GTS for short, is the patented technology that lies at the heart of the DE Dry Energy series of dryers. |
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The
thermal load imposed on a compressed air dryer is a function of several
parameters:
Since these will all fluctuate to a greater or lesser extent, the thermal load on the dryer can vary rapidly from 0 to 100% of the design load. In order to protect itself and to maintain a constant dewpoint the dryer needs an effective capacity control system. Conventional refrigeration dryers use the "hot gas bypass" method. While effective, this method involves running the refrigerant compressor at full speed under all conditions so that the power consumption is just as high at no-load or part-load as it is at full load. Capacity control in the Global Transfer System on the other hand involves the storage, monitoring and controlled release of the excess cooling energy under all part load conditions so that operation of the refrigerant compressor can be cycled. This results in average power consumption which is approximately proportional to the load on the dryer. Here's how it works.... The air to refrigerant heat exchanger is a specially designed finned coil nestling in a bed of silica. |
| In full load operation heat transfer from the compressed air to the evaporating refrigerant follows the direct path through all the interconnecting fins |
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In part-load
operation the evaporating refrigerant transfers part of its cooling
energy to the silica.
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| When the control system senses that the silica thermal store is fully charged with cooling energy, the refrigerant compressor is stopped (energy-saving phase). The constant dewpoint is maintained as heat is now transferred from the compressed air to the chilled silica. |
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| But MTA dryers save energy in
another, rather subtle, way too.
Most refrigeration compressed air dryers
on the market use heat exchangers with very fine passageways for the
air. This provides for high rates of heat transfer within very compact
dimensions. Unfortunately however, it also tends to increase the pressure
drop of the compressed air. |
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