Low-energy ROSAHL dehumidifier is ultra-compact

To help in this battle, ROSAHL has come up with a radical new approach for small area dehumidification problems – a range that includes the world's smallest dehumidifier at only 72 x 169 x 35mm.

Traditional dehumidifying technologies are beset with inherent problems, such as size, weight, constant emptying of collection tanks, noise, high power consumption and also a limited life expectancy as they use moving parts or need gel replacement. With ROSAHL dehumidification products these problems are removed, as ROSAHL products are extremely compact and light, do not require any emptying, are completely silent, use very little power and have no moving parts or gel to wear or be replaced.

This product literally removes moisture out of the air from an enclosed area (such as a switch cabinet), absorbs it through the innovative membrane (which is claimed to be unique), and then discharges it into the air on the other side.

How they work

The principle of how the ROSAHL products work is incredibly simple. The core component is a solid electrolyte polymer membrane - this special membrane has a very porous inner side that attracts moisture from the air, which is then absorbed into the membrane.

When the water is in the membrane, a DC current is used to decompose and break down the chemical elements of water into hydrogen and oxygen ions. These ions are then passed through to the other side of the membrane and discharged into the air as gas molecules.

Applications

ROSAHL products are extremely versatile and can be used in a wide variety of dehumidification applications, ranging from sterile rooms through to challenging external environments such as externally housed traffic control cabinets.

The moisture extraction rate of ROSAHL products is relatively low compared with larger and noisier conventional desiccant (absorption) and refrigerant (condensing) dehumidifiers, and they are best used in enclosed areas of up to 8m3.

Typical examples of suitable applications are:

• Traffic control and display cabinets
• Outdoor multimedia screens and displays
• Telecommunications such as mobile phone outstations
• Precision equipment storage cabinets
• Museum displays and exhibition cabinets
• Reduction of mould in closed rooms
• Odour reduction
• Storage of hygroscopic materials
• Semiconductor manufacturing

Since ROSAHL products use very little energy compared with other types of humidification, they can be left to run 24 hours a day, 365 days a year, continuously extracting moisture from an enclosed area without incurring major energy costs. In fact, since they need no emptying they can be left just to get on with the job for years without any worries.

The benefits of dehumidifying

Having high relative humidity can affect many things, such as electronic products whose working characteristics can change dramatically with humidity. Corrosion of metals can occur mainly when humidity is over 50 per cent - reduce humidity to below this level and corrosion of metals is drastically reduced.

Bacteria (which causes smells and can damage goods) needs humidity over 50 per cent to survive and multiply. Mould and fungi need a relative high humidity of over 70 per cent to flourish - keeping the relative humidity less than 50 per cent for more than 95 per cent of the time will help prevent any organic growth.

Low energy costs

The ROSAHL product range can extract up to 58g of moisture a day in spaces up to 8m3. Even with the largest units, the power consumption is less than 20W. Their compact size of between 72x169x35mm for the smallest self contained unit, up to 195x370x55mm for the largest module makes them incredibly small, enabling them to fit into even small areas.

With its zero maintenance, environmentally friendly construction and energy usage, the ROSAHL product range is proving time and again why it is the modern choice for most contained moisture problems.