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产品目录
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Sturdy standard dry coolers are reliable air coolers. Modularization allows customization exactly for project requirements. The cooler is limited to what is really needed and still remains a highly flexible system.
Dry Cooler
Designed according to: AD-Merkblatt, PED, DGRL
Finned Tube:
Steel (German grade St. 37.0 and others) elliptical tube, welded, 1,5 mm average wall thickness, hot-dip galvanized with fins, sturdy, resistant to corrosion, designed for optimized heat transfer, fit for 500 bar lancing to avoid loss of cooling capacity as a result of airside fouling.
Headers:
Steel (German grade WSTE 355 and other) bonnet-type headers, welded to tube sheets, fit for a maximum of 20 bar and 200 °C
Steel structure galvanized, resistant to corrosion
Fans: external-rotor motor, IP54, two speeds
Shipment: preassembly at factory
Alternatives and Accessories
Seamless core tube with 1.8 mm wall thickness
Tubes (German grade St. 35.8 or other) fit for temperatures up to 350 °C with additional special heat treatment
Two-pass welds
Tube end degalvanized before welding
Turbulators for highly viscous products
15 % inclined tubing (condenser mode)
Fans driven by standard motors
Speed or step fan control as a function of product temperature
Louvers to prevent freezing
Standard dry coolers use ambient air to cool fluids. They are particularly cost efficient when they are employed for cooling and condensation, benefiting fully from the temperature difference between the two fluids.
The fans needed to move the cooling air are driven by two-speed motors. At low temperature or during night-time, the low fan speed reduces noise emissions and cuts power consumption.
To satisfy different noise regulations, standard dry coolers have been developed for four different noise classes from “normal” (N) to “extremely quiet” (E).
When combined with refrigerant systems or forced cooling systems, standard dry coolers are a good choice even for processes where a product must be cooled far below ambient temperature.
As the figure shows, the most quiet units may, because of the limited air flow requirements, reduce power consumption and thus operating expenses to a level where they are more cost efficient in spite of the higher capital outlay.
The figure shows the part of the cooling load provided by each cooling system as a function of outdoor temperature and product temperature.
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