MULTI Kühlsysteme

Hybrid dry cooler

Hybrid dry cooler
Hybrid dry cooler
Hybrid dry cooler

Applications and characteristics

Hybrid dry cooler
  • For outside installation
  • In summer use of evaporating heat of water and in winter cooling capacity in dry mode
  • High nominal output by high-efficient V-shaped arrangement of the heat exchangers, favourable if space is limited
  • Preferably water-glycol-mixture
  • Water inlet temperature to max. 90°C (safe below steam range)
  • Ambient temperatures from -30 to +60°C
  • Very low water and electrical energy needs
  • High switching points for dry cooling (ca. 18 °C)
  • Applications in industry for process cooling and building technology of air-conditioning systems
  • Interconnected operation with cooling towers or chillers
  • For cooling systems that operate in an atmospheric closed cooling water system, no pollution of the coolant


  • Stainless steel structure
  • V-shape arranged heat exchanger as lamella package construction with easy cleanable lamella from aluminium with hydrophilic coating; inner pipes from cooper
  • Stainless steel drip pan under re-cooler collects rain or surplus sprayed water and discharges this to the drain point
  • High-performing low-pressure spraying system
  • Use of osmosis water or water of sufficient quality (conductivity less than 100 µS/cm) for wetting the lamella required (not supplied)
  • Use of energy-efficient fan types; low-noise and low-maintenance
  • Ventilatoren stufenlos drehzahlregelbar

Mode of action

A special design is the so-called hybrid cooler. For the hybrid cooling, the heat can dissipate to the environment in both, a sensitive way (by heating of the air) and a latent way (as evaporated water). To obtain a coolant temperature lower than the dry air temperature, the dry coolers are wetted with water.