Mist and Fog are both created by water droplets. The main difference is density. Density is the amount of water droplets in a given volume of air. Fog is denser than mist and tends to last longer. In terms of visibility (how far you can see through it), fog reduces it to less than 1 kilometer (0.6 miles) while mist can reduce visibility to between 1 and 2 kilometers (0.6 - 1.2 miles).
This will vary depending on the size of the system and the number of nozzles to be used.
Place mist line around the perimeter of the area to be cooled. This forms a mist curtain, a cooling barrier between the protected area and the outside heat. The mist line should be mounted 8' to 10' above the ground.
Cleaning Nozzles - Replace or clear obstructed or clogged nozzles. Nozzles may be cleared by scraping the stainless steel end with flat surface of a knife or screwdriver. To remove nozzle, turn in counter-clockwise direction. Nozzles may be routinely cleaned by soaking in solution of LIME AWAY or CLR overnight. Rinse thoroughly after soaking. Replace nozzle by turning in clockwise direction until snug.
The only maintenance required for a properly designed misting system is a periodic cleaning of the nozzles and an annual check-up for the pump. This check-up may include adding or changing of the oil and tightening or replacing of fan belts (only on the pulley driven pump models), and changing of the filter cartridge. Misting Fan Systems require very little maintenance. We do recommend some preventative care and cleaning for the nozzles.
The cooling efficiency of a misting system is depending on the temperature, relative humidity and atmospheric pressure. Here you can calculate the evaporative cooling for your area: Calculator
Yes. The evaporative cooling concept will work any time you are able to achieve evaporation(See "How does it work?"). The more complete the evaporation, the more effective the system will work. For areas with humidity above 80%, temperature reductions will be as high as 10 degrees. For humidity levels between 40% and 80%, temperature reductions will be as high as 20 degrees. Below 40% humidity, the temperature reductions may be as much as 35 degrees.
Water temperature does not have a great effect upon the cooling produced through evaporation. At 90º F (32º C) it takes 9,000 BTUs (2.268 kilocalories) to evaporate a gallon of 50° F (10º C) water and 8,700 BTU (2.192 kilocalories) to evaporate a gallon of 90º F. water. In this example, the water is 180% warmer and results in only a 3% reduction in the amount of heat absorbed.
You will only get wet if you are standing within 6' of the misting nozzle.
The systems operate between 40 and 100 psi of water pressure. The variance in pressure is because they operate on your household water pressure and not a pump. Normally built with PVC or poly plastic tubing and are connected to a water hose. Typically found on outdoor patios and the misting will get you wet but cool if you are standing nearby.Mid-Pressure Misting Systems
The systems operates between 100 and 250 psi of water pressure. A Mid-Pressure Pump is utilized to increase the pressure of the water flow. It is perfectly suited for backyard and patio misting.High Pressure Misting Systems
The systems operate between 800 and 1200 psi (pounds per square inch) of water pressure. The systems will work very effectively in both low and high levels of humidity. Even when the humidity exceeds 90%, the effects of the system will be felt with the rapid drop in temperature and make you feel cool and more comfortable. High Pressure Systems create the most BTU's, because the systems produce smaller MIST and creating more cooling evaporation. As the micron water droplets flash evaporate they pick up heat from the air, which significantly drops the temperature between 25 and 35 degrees Fahrenheit, without making you wet.