PROVEN

GRP
COOLING TOWERS

Functionality

The heated cooling water is fed to the cooling tower and evenly distributed onto the packed packing (heat exchanger) via spray nozzles. It then trickles down through this heat exchanger into the water collection basin, while the air sucked in by a fan is sucked through the cooling tower in the countercurrent.

Due to the optimized mixing of the air with the trickling water, about 2% of the cooling water evaporates and the water is cooled by the evaporation heat as well as by convection - depending on the operating point. The coolest water temperature that can be achieved depends not only on the tangible air temperature, but also on its water vapor content (expressed by the cooling limit temperature or wet bulb temperature).

In the cooler seasons, water temperatures can be reached that are partly below tap water temperature. On summer days with high humidity, the wet bulb temperature in Central Europe can reach values between 18°C and 21°C. This results in water temperatures between 22°C and 25 °C, depending on the size of the cooling tower. The smaller the approximation to the wet bulb temperature, the larger the cooling tower becomes.

For an economically designed cooling tower, the approach (difference between wet bulb temperature and cold water temperature) should therefore not be less than 4°C.

Designs
  • single cell: for small to medium cooling capacities, water flow rate up to 200 m³/h
  • double cell: for medium to high cooling capacities, water flow rate up to 350 m³/h
Features
  • fill and droplet separator made of PP, temperature resistant up to 80 °C
  • water distribution with hollow cone nozzles and distribution arms with threads, which makes them exchangeable
  • the particularly stable and frost-resistant water collection tank in the lower part of the cooling tower contains a series of fittings as standard:
    • water return made of plastic, optionally with rubber sleeve or flange
    • float valve with adjustable float for automatic replenishment of evaporated water
    • overflow, emptying and an easy-to-clean stainless steel sieve are located in the cooling tower bottom shell
  • splash protection blinds made of plastic in honeycomb construction in GRP frame. No splash water loss; noise reduction
  • the fan assembly is completely equipped with impeller, inlet nozzle, drive motor and bracket as well as a protective grille
  • metallic parts hot-dip galvanized
  • the cooling tower is equipped with screw-on brackets for mounting at the installation site
Options
  • inclined bottom, which ensures complete emptying without residual water
  • high bottom shell 600 mm
  • cooling tower console, full cone nozzles
  • one- or two-speed motor
  • frequency converter for reducing the sound level by up to 6 dB(A) can be used with a comprehensive package of silencers and blow-out cylinders
  • repair switch, pre-wired
  • heating with thermostat and temperature control
  • splash protection blinds optionally in PVC frame
  • service door or hatch made of stainless steel or GRP material and various sizes for main tenance-friendly access to the cooling tower
  • float valve for water replenishment with plastic ball
  • special painting in RAL colors