Dry cooler in horizontal design
Applications and characteristics
- For outside installation
- Preferably water-glycol-mixture
- Water inlet temperature to max. 90°C (safe below steam range)
- Ambient temperatures from -30 to +60°C
- Cooling water temperatures depend onambient air temperatures; controllable by speed control of fans
- Industrial applications in all common industries and building technology
- Cooling of devices in the chemistry, process gas compressors, cylinder head cooling of diesel engines, test benches
- Interconnected operation with cooling towers or chillers
- For cooling systems that operate in an atmospheric closed cooling water system, no pollution of the coolant
Desgin
- Housing made of painted galvanized sheet steel RAL 7035 (light grey)
- Heat exchanger as lamella package construction with easy cleanable lamella from pure aluminium (other materials on request available); inner pipes from cooper
- Heat exchanger soldered under protective gas to avoid oxidation
- Use of energy-efficient fan types; low-noise and low-maintenance
- Continuously adjustable speed controlled fans
Mode of action
A dry cooler is used in a closed cooling circuit to cool a medium (water or water-glycol mixture) and dissipates the extracted heat to the air. The medium is passed through a closed tube bundle heat exchanger. To increase the transfer surface lamella are often mounted on the pipes.
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.