Abstract: A heat exchanger device with at least one heat exchanger which is flowed through by a fluid, at least one fan and at least one adiabatic air cooler for cooling air which is drawn in from the surroundings by the fan, wherein the air that has been drawn in is conducted firstly through the air cooler and subsequently through the heat exchanger and the adiabatic air cooler has at least one humidification means, which is arranged in the air cooler and which is composed of a moisture-absorbing material and a liquid feed, which feeds a liquid to the humidification means in order to keep the humidification means moist.

Abstract: The invention relates to a heat exchanger device with at least one heat exchanger (1) which is flowed through by a fluid, at least one fan (11) and at least one adiabatic air cooler (2) for cooling air which is drawn in from the surroundings by the fan (11), wherein the air that has been drawn in is conducted firstly through the air cooler (2) and subsequently through the heat exchanger (1) and the adiabatic air cooler (2) has at least one humidification means (3), which is arranged in the air cooler (2) and which is composed of a moisture-absorbing material and a liquid feed (4), which feeds a liquid to the humidification means (3) in order to keep the humidification means (3) moist.

Abstract: A heat exchanger arrangement is presented having at least one heat exchanger module (2), which includes a plurality of microchannel heat transfer elements (6.1, 6.2) and a plurality of heat exchange ribs (7.1, 7.2) which are connected to the microchannel heat transfer elements in a thermally conductive manner and which form air channels, and having a ventilation apparatus to generate an airflow (12?) in the air channels. The heat exchanger arrangement additionally includes a wetting apparatus to wet the microchannel transfer elements and/or the heat exchange ribs with liquid (10?). The heat exchanger arrangement is furthermore characterized in that the heat exchanger module or modules is/are arranged at an angle (?) with respect to the vertical.