Rotors help with dehumidification

Combining important features from silica gel and lithium chloride has resulted in a dehumidification rotor that meets the highest standards of hygiene

The pharmaceutical, food products and electronics industries are examples of where dehumidification to high levels of hygienic safety is required. Production premises must be free from bacteria, mould spores, dust and other minute particles.

To help in this endeavour Munters has developed a new desiccant drying wheel for dehumidification. Called the HPH rotor – High Performance Hygienic – it provides dehumidification to meet high standards of hygiene. The market is currently dominated by two rotor types: silica gel and lithium chloride. Silica gel has good dehumidification properties and a long effective life. Lithium chloride counteracts bacteria and mould and meets stringent hygiene requirements, but is more sensitive to a number of atmospheric contaminants and some mechanical effects of water. In the HPH rotor, Munters has succeeded in combining the merits of both. An entirely new active material consisting of silica gel with patent-pending additives is used which further enhances the bacteriostatic and mould-resistant characteristics.

A measure of the high dehumidification capacity is the material’s inner absorption surface. The rotor has a surface area of 600m2/gm. This compares with a normal area of 400-500m2/gm for most brands on the market. The structural material supporting the dehumidification material is glass micro-fibre with a fibre size of 6.3 microns. The material is stable, and in the event of damage the fibre size and shape are such that the fibres do not constitute a health hazard.

Munters UK Tel: 01480 432243