Cooling tower

From FIS Freestyle wiki

Jump to: navigation, search
Cooling tower
Cooling tower

Water cooling systems cool the water supplied to snowmaking systems. Reducing the temperature of the water increases the efficiency of the snowmaking process by reducing evaporative losses when the water is released to the atmosphere. If a water droplet is already near freezing, less energy is required to convert that droplet to an ice particle. Water droplets will start freezing earlier in the spray, so they will have a longer time at 32 degrees/0 degrees to freeze (they are at sub-32/sub-0 degrees before nucleating).

Also, warmer water will destroy many small ice crystals formed in the snow gun, thereby decreasing the number of nucleants in the plume. Therefore, the cooler the water, the less water is left unfrozen and more snow is produced. Furthermore, observation has shown that cooler water allows centrifugal compressors to run more efficiently and produce more air.

Snowmaking efficiency losses have been estimated by Ratnik Industries and York Snow at 2 to 3 percent for every degree that the water temperature is above 32°F / 0°C.

Water cooling systems have different designs that depend on various elements of the snowmaking system. Spray cooling systems have lower costs than cooling towers, but water reservoirs or ponds are required for spray ooling systems. Cooling towers allow snow to be made earlier in the winter, which can reduce “peak” water demands and improve snowpack conditions.

Also, waterstick snowmaking guns require cold water (at or less than 40°F) for maximum efficiency, so greater cooling is required than for other snowmaking gun types.

[edit] Also see

[edit] Reference

  • Peaks to Prairies [3]
  • Snowmaking Wikipedia [4]

Return to Snow and Weather Glossary, Working with Snow, Freestyle Skiing

Personal tools