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Section 3 –Operation
The purpose of the unit is to humidify dry air passing through a wetted media in an energy-efficient, silent and
safe way. The adiabatic humidification/cooling process is carried out in the humidifier and cooler itself and
increases the humidity in the air supply to the room/ house or cools the temperature.
3.1 Principle of operation
The purpose of the HomEvap Direct is; energy-efficient, quiet and safe air cooling and humidifying the house if there is
no WTW present. The cooling function is to keep the house at a pleasant temperature during the summer. The
humidifier will keep the house at a good relative humidity in the winter.
The Direct is placed - out of sight - above the door of, for example, your meter cupboard, storage room or attic. The
humidified and cooled air is blown in through a grid
Principle of operation
The HomEvap Direct is an adiabatic air cooler and humidifier. The warm air from the house goes through a humidified
matrix. As a result, the air cools down to very close to the wet bulb temperature of this air, for example 29C / 30% is
cooled to 20C / 75%. The adiabatic air cooler has an efficiency of 80%.
Humidifier
If the moisture content of the outside air becomes too low, the HomEvap starts humidifying this supplied air, achieving
a maximum efficiency of 80%. The air does cool off according to the line of enthalpy of the Mollier diagram *. The
maximum capacity is 5 l / h *.
Cooler
The Direct also provides cooling and only operates when the outdoor temperature is too hot and the setpoint is lower
than the measured temperature in the home.
ATTENTION: the effect on the room temperature is limited by the limited air volume.
3.2 Safety
The water is legionella-safe because of the built-in, patented, legionella-free LegioSafe water filter and distributor. The
supply water first passes through the LegioSafe before it moistens the matrix. As a result there is no risk for the
inhabitants of houses or building. Only fresh water is used. There is no recycling of water. The matrix is completely dry
if there is no demand for cooling/humidification.
The SHC80 duct sensor supplied also measures the relative humidity and temperature in the duct after the humidifier.
This position guarantees the best efficiency and safe operation, no condensate in ducts under the normal conditions of
use of our design.
The built-in PTC air heater has several safety devices:
1. A mechanical safety device that ensures that the air heater demands no more power after exceeding a
maximum temperature of 85°C.
2. An extra temperature sensor in the humidifier that switches the air heater off at too high a temperature.
