FAQs

To install a pre-cooling system for heat exchangers, typical lead times are about 12 weeks for smaller projects and up to 24 weeks for larger ones. MeeFog pump skids arrive fully assembled, with fog nozzles installed and factory-tested.

Nozzle lines usually ship in 20-foot sections. Installation involves bolting the pump skid to a foundation, then connecting the feedlines and nozzle lines. MeeFog supplies all required drawings and a technical advisor to support the installation process.

Fog nozzles, fog nozzle lines, feedlines, and pumps are all stainless steel, which provides long life and requires minimal maintenance.

MeeFog systems reduce water fallout by using many fog nozzles with low flow rates that prevent over-wetting of coils. Any overspray that occurs can boost indirect evaporative cooling, as water evaporates from the hot coil surfaces, improving overall heat rejection and system efficiency.

A MeeFog pre-cooler for heat exchangers can operate for more than 30 years with proper maintenance. The fog nozzles themselves do not wear out and can be used for the life of the system, assuming water treatment is maintained.

MeeFog pre-cooling systems need minimal maintenance. Inlet water filters should be replaced periodically, and any water treatment equipment needs routine service. The high-pressure pumps are water-lubricated, multi-stage centrifugal units designed to run for many years with little maintenance.

MeeFog pre-cooling systems can operate automatically based on ambient temperature. For example, in a two-stage setup, the first stage turns on above 85°F (30°C), and the second stage turns on above 90°F (32°C). You can adjust set-points using climate data or process needs. Some systems also control based on the cooled fluid temperature leaving the heat exchanger, optimizing indirect evaporative cooling even further.

The water should have low levels of calcium and magnesium since these minerals can form a hard scale that is difficult to remove from the heat exchanger fins. Mee Industries can help design a water treatment system that will provide long life and minimal maintenance.

Yes. MeeFog systems can be easily retrofitted to existing air-cooled heat exchangers.

MeeFog controls fog droplet sizes using precision high-pressure nozzles. Small, uniform droplets stay suspended in the air, supporting effective indirect evaporative cooling. Small droplets matter because they expose more water surface to air.

Faster evaporation cools the air more efficiently and reduces water loss. Larger droplets drip off the heat exchanger before evaporating, wasting water and lowering cooling performance. Smaller droplets save water and improve overall cooling efficiency.