Adiabatic cooling
Adiabatic cooling is the cooling of air that occurs when water evaporates. This cooling is caused by the liquid being deprived of the evaporation energy (heat of evaporation) required for evaporation. Adiabatic exhaust air humidification is carried out with the aid of a honeycomb humidifier or a high-pressure nozzle humidifier upstream of the ERS heat exchanger.
Cooling by means of sprinkling
An even greater effect than adiabatic exhaust air humidification by means of a honeycomb humidifier or a high-pressure nozzle humidifier can be achieved by a combined heat and mass transfer when the fins of the heat exchanger are wetted by means of a sprinkling device.
ECONOMIC OPTION FOR HEAT REJECTION
The heat exchanger in the exhaust air is sprinkled directly with water. Because of the large surface area of the heat exchanger and the high transfer coefficients, the evaporation process is highly efficient and allows significant temperature reductions. These are transferred to the water/glycol mixture, which is then used in the closed-loop system to cool the outside air.
The compact design also saves space, resulting in cost reductions in the ventilation system. In addition, a chiller can be eliminated, or it can be significantly smaller in size. This reduces investment and operating costs and has ecological benefits.
It should be noted that, depending on the country and cooling method, industrial hygiene guidelines and requirements must be taken into account. Our experts are at your disposal for clarification.
