VELWIN TECHNOCRATS

Koyambedu, Chennai, Tamil Nadu

Dryspell

.Microprocessor Controller

.Pre-filter rating 0.3 microns (coalescer)

.Shuttle valve for Low Presssure drop

.All Aluminium resist oxidation & scale formation

.Dewpoint better than -40 c

.Design Patented

Principal of operation

Drying Cycle : Moist air from the compressor is sent through the coalescing filter. Here water & oil coalesces, gets purged through the auto drain valve.

The relatively clean air with water vapour passes through the aluminum drying tower filled with desiccant gets completely dried (upto 40 c dew point) and then passes through a built in after filter. The desiccant fines from the towers are completely removed and clean dry air is let out through the outlet port for use.

Regeneration cycle :During the regeneration cycle. The sudden depressurization brings out water molecules trapped in the Desiccant pores to the surface of the beads. A small portion dry compressed air from the drying TOWER then passes over the desiccant through the regeneration orifice built in the Top Block. This results in complete regeneration of the Desiccant.

Coldspell

• Large condenser for high ambient temperatures
• Microprocessor based controller
• Anti-recycle feature for compressor protection
• Low pressure drop across advanced heat exchangers saves
• Energy
• The dryers have been designed for nominal standard
• inlet conditions as per ISO 7183 - 2007
• l Dryer Quality class - ISO 8573 - 1 : 2010 (E) class -5-

Heat of Compression Air Dryer [Series DC]

Trident Refrigeration Compressed Air Dryer is an ideal solution for clean and compressed dry air. It is the result of extensive design and prototype testing and provides a consistent dew point of 3 c. Compared to other Air Dryers the HX Series of Trident has a very low running cost.
No-loss Split Flow Air Dryer [Series DS]
Trident make split flow dryers offers dewpoint of -40c depending on the requirements. These dryers utilise heated part of air for regeneration and there is no air loss in this type of dryer. These dryers are available for any capacity higher than 500 scfm.


Internal Heated Type Air Dryer[Series DI]
Trident make internal heated dryer offers good dewpoint.Heaters are kept inside the insulated tower and the tower is heated to the required temperature and pumped.These dryers are available for any capacity higher than 500 scfm.

Blower Heat Reactivated Air Dryers
Trident BlowerHeatReactivated Air Dryers offers a very good dew point of 50c or better depending on the requirement.These dryers are useful for instrumentation air meeting the quality requirement of ISA s7.34. Available for any higher capacity from 500 cfm to 4000 cfm.

OperationThe Blower Heat Reactivated Dryer works on the principle Thermal swing. The desiccant adsorbs moisture from the compressed air to deliver dry air. The desiccant bed saturates over a period of time. The saturated bed is regenerated by heating with hot air generated using a blower. Hence the dryer is called blower heat reactivated desiccant dryer. Since the temperature of the bed swings between the compressed air temperature and the regeneration temperature it is called Thermal swing type. The hot air from the blower passed through a heater. This makes the air very dry. The hot air then heats up the desiccant bed. When the bed is heated it gives up the moisture adsorbed and is ready for adsorption. The hot air carries this moisture to the atmosphere. After the regeneration, heated desiccant bed is cooled by the flow of air to suit the application conditions. Final Cooling is achieved by a no loss compressed air cooling method, resulting in a no Dewpoint spike system. Trident dryer comes with a dewpoint based control system as a standard. The tower changeover takes place only when the bed is saturated, resulting in energy saving and extended life. The dryer with its control valves and controller manages the drying, regeneration and repressurisation of the desiccant columns automatically and thereby delivering continuous dry compressed air.
Blower Heat Reactivated Dryers are best suited for applications requiring large volume of compressed air at low dewpoint. For the above conditions the dryer works out very economical energy wise. Trident blower heat reactivated dryers are built from the start for customization. Since the air volume is large cusomisation delivers substantial energy savings.

Salient FeaturesAccordance with ASME or IS codes. Offered for 3rd party inspection. Typical operating pressures are 5 to 9kg/cm Micro processor based control panel.
low dewpoint

• Low pressure drop
• Low energy cost for given dew point
• Compact
• Ready to use
• Reliable design and components
• Available to various standards
• Dew point based tower changeover controls
• Low total cost of ownership
• Extensive operation and maintenance manuals

Contact us or visit our web site for the design input details to enable us to give you a correct solution.

ApplicationPower stations Plant air Instruments.