Condensation drying

There are two physical ways of reducing the relative humidity in a room:
  • Keep the room temperature the same, but reduce the quantity of water vapour per kg of air
  • Keep the quantity of water vapour per kg of air unchanged, but raise the temperature.

There are two main processes which can be considered when striving for optimum drying results in actual dehumidifying scenarios: condensation drying and adsorption drying.

condensation drying

Condensation drying, also referred to as refrigeration drying-or dehumidification on the basis of the heat pump principle-is the method of air dehumidification most commonly used in industry and at home. The heart of a condensation dryer is the cooling compressor. These dryers work by circulating the air with the windows and doors closed, and are especially frugal in their consumption of electrical energy.

Condensation dryers work on the principle of heat recycling, which means that all of the energy used and drawn from the air in the room is given back out into the room in the form of heat. The energy-gain can be up to 2.5 times the energy consumption. A condensation dryer requires only around 20% of the energy needed for the heating and ventilating method, while producing much more dependable results.

The dehumidifier reduces the "partial water vapour pressure" in the whole room, which returns to the air its capacity to hold new moisture.

The heat released, which can amount to several times the electrical energy consumed by the condensation dryer, helps to warm up the room.

Example: AERIAL AD 420/AD 430