Low dew point dehumidification units for high dry air quality
DESCRIPTION OF DESSICA LOW DEW POINT SYSTEMS
The STAD systems are dehumidification modular units design to meet the expectation of all customers in electronics, chemicals, energies… The dryer units offer a tailor-made dehumidification solution. The DESSICA systems control humidity in the room and reach a very low dew point to -30°C to -65°C.
The low dew point dehumidification units have a high impermeability to air and water vapor thanks to rubber gasket. The dryer unit offer a complete solution with filtration, heat exchanger and reactivation system… There are made with double skin isolation casing 50mm.
The desiccant rotor in silica gel has very high levels of active silica gel, ensuring very high dehumidification performance and reducing energy consumption compared to devices equipped with other silica gel desiccant rotors of the same dimensions.
Some reactivation solutions can be installed to improve the energy efficiency of systems.
The operating principle is based in our technology with a high desiccant rotor and two independent air flows crossing.
It is possible to design the dehumidifier with multiple equipment. According to circumstances to maintain in the anhydrous room, the number of people to host, excessive pressure, or process needed. It is possible to install 1 or 2 stage in the dehumidifier. The number of stages depend of the number of silica gel rotor include into.
The size of STAD industrial dryer depend on the frontal speed of the air on its internal components thus the air flow mass. Each component must be sized according to its own requirements.
The dry air systems are made of central unit and upstream or downstream additional units (process air or dry air.)
BENEFITS OF DRY AIR LOW DEW POINT SYSTEMS
- Specially designed to treat very low dew point
- Very high water vapor tightness
- Modular and adaptable
- Double skin insulation 50mm
- PLC automated control
OPERATING PRINCIPLE OF THE DESICCANT ROTOR WITH AN INTEGRATED HEAT RECOVERY
The STAD dehydrator uses two independent air streams.
The main air flow will be dried out, the secondary flow, of lower volume, will be used to remove moisture retained by the dehydrating wheel.
Two fans move two separate, counter-current air streams through the dehydrating wheel.
The main or air stream to be treated crosses the slow-rotating silica wheel. Silicagel is a highly hygroscopic material capable of holding water vapor contained in ambient air. When the wheel is crossed, the air to be treated loses its moisture retained by the silicagel. Dry air is then directly usable.
The secondary air flow, called regenerative air, is used to remove the moisture held by the silicagel from the wheel. The regenerating air is heated to a temperature of about 100°C to 130°C by heating with an electric, steam or direct gas battery, then crosses the counter-current wheel of the air stream to be treated to remove the silicagel from its humidity. Wet regeneration air (humid air) leaves the dehydrator to be evacuated outside the premises or building.
APPLICATIONS FOR INDUSTRIAL DESICCANT
The STAD systems are design to meet the requirement of industrials and research centers. In particularly for dry and anhydrous rooms where the manufacturers handle chemicals components such as lithium. The anhydrous rooms is essential for electric vehicle battery manufacturing because in contact with water the lithium can catch fire. The humidity in the atmosphere must be under 1%.