There are many services such as high pressure and high temperature application where air cooling is lower in first cost than water cooling. Operating and maintenance of air cooling is far lower than for water cooling. It was noted that operating cost of air coolers is about 20% of an equivalent water cooling system such as used in conjunction with shell and tube heat exchangers and condensers. Maintenance costs for conventional coolers and condensers are at least 3 times those for air cooled units. Advantages: Much lower maintenance and cleaning cost than water cooled units. No water corrosion means longer life of equipment. Heated air from exchanger can be used for space heating in cold weather. Process outlet temperature easily regulated by varying fan speeds or changing pitch of blades, saving considerable power in cooler weather. Good investment against future water shortage and pollution problems. Eliminations of various cooling water problems such as treating, filtering, pumps, valves and piping. Hot discharge air quickly rises and dissipates, the atmosphere being an infinite heat sink. Water cooling requires return piping to return the fluid to its source for cooling and re-use. Design Features: Welded Box Headers “C-Shape” box headers are our most advanced design and are especially suited for high pressure service. The headers are fabricated from formed “C” shapes which are double butt welded together, eliminating the long corner welds found in the 4-plate header design. These headers are available for design pressures up to 3,000 psig. Cylindrical headers are available for design pressures up to 6,000 psig. Coverplate Headers This type of header is preferred for cooling fluids where rapid fouling (greater than 0.002) may occur. The bolted and gasketed coverplate may be removed so the tubes are more readily accessible for mechanical cleaning. This design is normally not recommended for pressures above 300 psig. Finned Tube Designs Shoulder Tension Fins Can be used for metal temperature up to 450 °F. The aluminum fins are tension wound onto the tube. This provides adequate contact surface for heat transfer between tube and fin in the recommended temperature range. Edge Grooved Fins Used for metal temperatures up to 650 °F for aluminum or copper fins, 850 °F for steel and 1,000 °F for chrome moly. The helical fins have a groove plowed in the outside of the tube or pipewall with no metal removed. The depth of the groove in the wall of the tube or pipe is about 50% of the fin thickness used. The fin is tightly wound in the groove and while the fin is firmly seated in the groove, the uniform furrows along each side of the fin are pressed against the base of the fin, thus locking the fin to the tube. Edge Tension Fins Can be manufactured in most combinations of tubing and are suitable for metal temperatures up to 250 °F. Edge tension type are not recommended on pipe. High pressure (2,000 psig design) hydrogen-rich effluent cooler. Note split header design for wide temperature range. Request for more information Home | Products | About Us | Guest Book | Contact Us | Site Map