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All DST desiccant dehumidifiers employ the Seibu Giken Silica Gel Rotor. Within the Seibu Giken rotor, the silica gel is chemically affixed to the framework, thereby precluding any desiccant carry-over into the air. Additionally, it boasts an exceptional lifespan. Following a decade of operation, the Seibu Giken rotor preserves over 90% of its initial capacity. Another notable attribute is its washable nature, crucial for rotors operating under rigorous conditions.
Seibu Giken pioneered the development of a silica gel rotor and remains at the forefront of technology.
Examinations conducted by the esteemed Frauenhofer Institute affirm the absence of dust carry-over to the dry air in a Seibu Giken rotor. Trials on DST dehumidifiers stationed in sewage facilities further demonstrate the rotor’s bacteriostatic properties.
The adsorption rotor is fabricated from alternating layers of flat and corrugated sheets, infused with an active ingredient termed a desiccant. It is configured to form a multitude of axial air pathways running parallel through the structure. As the air traverses these pathways, it undergoes desiccation.
D-MAX Z regulates humidity without dispersing any silicon into the atmosphere. The distinctive D-MAX Z rotor is a 100% silicon-free sorption rotor that maintains complete dehumidification efficacy. Industries such as automotive and pharmaceuticals demand silicon-free ambient air. Through meticulous research, Seibu Giken has succeeded in producing the sole 100% silicon-free rotor available on the market. D-MAX Z is exclusively obtainable from Seibu Giken DST.
D-MAX signifies the evolution of silica gel rotors from Seibu Giken and represents a progression from the SSCR-U. The silica gel remains chemically bonded to the framework, ensuring no desiccant carry-over into the air and offering exceptional longevity. The D-MAX rotor is also washable if contaminated. A novel aspect of the D-MAX rotor is its bacteriostatic and fungistatic properties, inhibiting bacterial and fungal growth. However, it is solely the D-MAX H that possesses bactericidal capabilities, effectively eradicating bacteria.
This Zeolite rotor developed by Seibu Giken is tailored for dehumidification at ultra-low dew points, such as in the production of lithium batteries. DLR boasts a desiccant with a high dehumidifying capacity.
The D-MAX H rotor is bactericidal and hygienic, rendering it particularly suitable for dehumidification within the food and pharmaceutical sectors. The D-MAX H can be installed in either new or existing rotor units from Seibu Giken DST. The rotor surface effectively eradicates airborne bacteria, as verified by successful testing at the Japan Food Research Laboratories in 2001.
The rotor is the most important part of the dehumidifier it is the rotor that determines the capacity and the lifetime of the unit. Hence you want a dependable, stable, and efficient rotor. The following things are important to consider when choosing..
Back in the fifties, when the desiccant rotor dehumidifier was invented, lithium chloride salt was used as the desiccant. Lithium chloride absorbs moisture through a chemical reaction. The disadvantage of a salt-impregnated rotor is that it can’t withstand high humidity. Saturated air will cause the salt to partially leave the rotor and thereby decreasing the capacity and causing corrosion of the dehumidifier. Today more and more dehumidifiers use silica gel rotors. The silica gel adsorbs the moisture, the water molecules adhere to the surface of the silica gel. The advantage is that it can withstand saturated air and, if the silica gel is chemically bonded to the rotor, it has a very long lifetime, up to ten years if taken well care of.
Both lithium chloride and silica gel rotors containing loose desiccant will cause some dust to leave the rotor with dry air. Apart from possible damage to dried materials, the capacity of the rotor will deteriorate. Only rotors with chemically bonded silica gel will have no desiccant carry-over to the dry air.
If the rotor is contaminated by accident or used in applications with contaminated air, it is important that the rotor is washable, and that you can wash it yourself! Having to leave the rotor away for washing is costly and causes a longer downtime.
Tests on a silica gel rotor used in a sewage plant show no bacteria formation on the rotor. This is thanks to the high temperature (above 120°C) when regenerating the rotor and to the low relative humidity in the dry air.
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