A desiccant dehumidifier will have a wheel coated with something like silica gel or lithium chloride that gently rotates, while a fan draws in air from the room and passes it across through the wheel. One major drawback of the compressor dehumidifiers is that it depends on the changing of temperature to extract the moisture – there needs to be a significant contrast between the temperature outside of the machine and inside. As shown in the saturation curve at the start of this, the capacity of air to absorb moisture is entirely dictated by the temperature; the lower the temperature the less it can hold, the higher it is the more it can. If we look at the Leusden and Freymark illustration below the optimum conditions for human comfort are between 20-22°C with an RH (relative humidity) level of 40-60%. DryFy Pro | 20 l of dehumidification per day - high-quality processing and stylishly designed, with high performance and dreamy silent mode for your undisturbed well-being.

A desiccant dehumidifier works very differently – rather than working like a fridge, they are more similar to the little packs of silica gel that you get with new shoes. In addition to the health-promoting arguments and the increased well-being by fresh air, electrical dehumidifiers can be used in a versatile way and can be adjusted as needed.The desiccant can be mounted on a belt or other means of transporting it during a cycle of operation. Most fan heaters these days, such as our FF range, come with thermostats so you can set them come on if the room drops below a certain temperature. For larger spaces of 80 to 100 m², we recommend devices with a dehumidification performance of up to 30 litres per day - this can be done by the DryFy 30, for example.

They’re not as expensive as desiccant units but much more effective than peltier driers so are particularly well suited to these kind of applications. l would be introduced from the outside environment into our room per hour and would have to be allowed for.This diagram shows the schematic layout of a typical dehumidifier featuring a hot gas bypass circuit and names the major components. Some dehumidifier models can tie into plumbing drains or use a built-in water pump to empty themselves as they collect moisture. Whilst both fulfill the same purpose by extracting moisture from the air, they achieve this via different methods. If the dehumidifier is operating at an ambient below about 15°C the moisture forming on the evaporator will freeze as it condenses, then as the ice builds up it reduces the effectiveness of the unit.

Holding the material in a wheel-shaped matrix, as shown in this animation, is one of the most common methods.This air passes into a crossflow plate heat exchanger (B) where a substantial proportion of the sensible heat is transferred to a cool supply air stream. These smaller domestic desiccant units still utilise the same method of extraction, but they also use a condenser device to help collect the water rather than just blow it down a pipe. The most efficient configurations save energy by using two membranes that isolate a vacuum pump from ambient air.