Vision Air Conditioning Trading Corp.
Methods of Operation
Desiccant Dehumidifiers Methods of Operation
Compact Operation Mode:
We only follow this mode in our smallest desiccant dehumidifier. a single radial fan supplies air for both process and wet airflows. This mode simplifies operation, increases heat recovery, achieves low dew point and it also reduces installation cost
Method Of Operation:
Process Airflow: Process air goes through the desiccant rotor, which absorbs its moisture, and dry air is supplied back to controlled space.
Reactivation Airflow: Part of the desiccant rotor dries and heats the reactivation air, which after heated to about 90-140°C and went through the regeneration part of the rotor to evaporate the absorbed moisture molecules on the process side. The hot, wet air is then discharged out of controlled space.
Consistent Process: The rotor consistently absorbs and discharges moisture to provide a steady supply of dry air. The sealed holding frame inhibits air mixing, while the lack of condensate water make the system drainage free!
High Performance Mode:
This is the most commonly used system in our range, implemented in desiccant dehumidifiers ranging from MDC450 to MDC3000. It is inteneded to achieve a very low relative humidity values to almost 0% RH!
Method of Operation:
Dual Fan System: Individual direct drive fans take care of both process air and wet airflows.
Process Airflow: Process air goes through about ¾ of the desiccant rotor’s surface area, and that is where moisture is absorbed, then dry air is supplied back to controlled space.
Reactivation Airflow: reactivation air is heated to about 90-140°C and then it goes through the remaining ¼ regeneration part of the rotor to evaporate the absorbed moisture molecules on the process side. The hot, wet air is then discharged out of controlled space.
Consistent Process: The rotor consistently absorbs and discharges moisture to provide a steady supply of dry air. The sealed holding frame inhibits air mixing, while the lack of condensate water make the system drainage free!
High Efficiency Heat Recovery Mode:
This mode is used in all our range of Medium and Large Desiccant Dehumidifiers, particularly in MDC4000 and bigger models. The main advantage of this mode is that it is focused on heat recovery, energy efficiency and minimal increase of supplied process air’s temperature.
Method of Operation:
Heat Recovery Boost: An efficient pre-heat method is applied in reactivation section of the rotor. The desiccant wheel absorbs and keeps heat in order to partially dehumidify and heat regeneration air before heater.
Dual Fan System: Individual direct drive fans take care of both process air and wet airflows.
Process Airflow: Process air goes through about 2/3 of the desiccant rotor’s surface area, and that is where moisture is absorbed, then dry air is supplied back to controlled space.
Reactivation Airflow: reactivation air goes through purge zone of the desiccant rotor and it gets partially heated before it goes through heater to raise its temperature to about 90-140°C and then it goes through the remaining regeneration part of the rotor to evaporate the absorbed moisture molecules on the process side. The hot, wet air is then discharged out of controlled space.
Consistent Process: The rotor consistently absorbs and discharges moisture to provide a steady supply of dry air. The sealed holding frame inhibits air mixing, while the lack of condensate water make the system drainage free!
