How does fog work? Fog systems provide outdoor cooling through evaporation. Evaporative cooling, or Thermal Dynamics, is a very simple process. Water requires energy to evaporate (600 calories of heat per gram of water.) As the fog evaporates, the energy exchange results in temperature reductions. The effectiveness of this process is dependent on the existing temperature and humidity. The effectiveness of the cooling process improves as the temperature rises (85 degrees F to 115 degrees F is ideal) and the humidity level drops (above 90% humidity - performance is marginal; 40% to 90% humidity - performance is good; below 40% humidity - performance is excellent). The expected temperature drop will vary depending on the climate conditions, but cooling up to 40 degrees F is achievable under ideal circumstances.
What is a fog system and what does it do? Fog systems include a length of tubing attached to, suspended from a structure, or incorporated into a fan, with specially designed fog nozzles, and a high pressure pump designed to increase the water pressure to 1,000 pounds per square inch (PSI). At this pressure, the water is atomized into micron size droplets (average droplet size is 10 micron) that flash evaporate, and create significant temperature reduction.
When used in an enclosed environment, such as a greenhouse, the system will initially create cooling. Over time, the humidity level increases, and high levels of humidity can be artificially created and maintained. This is especially useful for greenhouse propagation, removal of static electricity in electronics production facilities, or removal of dust and odors for many industrial and agricultural applications.
How should the system be installed? For outdoor cooling applications, the system should be mounted around the perimeter of the area to be cooled, making sure that all open sides are covered with fog. The system should be mounted between 8 feet and 10 feet off the ground. If installations require higher mounting surfaces, this can be compensated for by increasing the nozzle density.
How should the system be designed? There are many different variables associated with the proper design and installation of a fog system. The exact application, the needed benefits, and the conditions present at the system location will determine what design is required. Our Technical Support Staff is trained in all aspects and uses of fog systems, and can assist in designing a system that fits the needs of any fog application.
How much water does a fog system actually use? This will vary depending on the size of the system and the number of nozzles to be used.A typical system utilizing our .008" orifice nozzle will use approximately .025 GPM, or 1.5 gallons of water per hour, per nozzle. With a system that has 36 inch nozzle spacing, this equates to a perimeter system of 180 feet using only 1.5 GPM or 90 GPH.Sin City Misting engineers will provide this information for any system they design.
Is there any maintenance required? The only maintenance required for a properly designed fog system is a periodic cleaning of the nozzles and an annual 'check-up' for the pump. This check-up should include changing of the oil and the filter elements. Oil changes are required after each 500 hours of use. Filter changes are dependant on local water conditions, but at a minimum of once each season. If the installation is subject to freezing and is not in use, the system should be completely drained of water, including the emptying of the filter canisters.
I already have fans.Can I retrofit my set up? Yes, you can use your existing fans to bring Sin City Misting?s fogging technology to your workplace. A base system would consist of one high pressure (1,000psi) pump module, and one two-stage fan face (# of nozzles dependent on fan cfm rating and summer high-temperature in the workplace). The Sin City Misting System can be engineered to serve any number of fans, throughout the workplace from a single centrally located pump module. Sin City Misting?s engineers will need to know the diameter and cfm of each fan to be retrofitted, where the pump will be located in relationship to the fan locations, and the power available. A top view drawing of the locations must be provided. The high pressure manifold hoses from the pump module to the fan locations can be installed overhead, attached to I-Beams or stainless cable to keep the floor clear of obstacles for forklifts and workers. You save money when you retrofit your existing fans but still get the heat stress relief for you employees.
Heat stress What is Heat Stress? The human body is designed to operate at 98.6 degrees. When the air temperature, combined with humidity, moves the Heat Stress Index (see HSI scale) above 90 degrees, the human body becomes stressed. In order for the core body temperature to be maintained at a safe level, two elements are necessary: 1.) Convection (air movement) and 2.) Evaporation (perspiring). As the Heat Index rises, the body produces more perspiration in order to cool itself. Prolonged exposure drains the body of vital fluids. This lowers the circulatory volume and raises blood pressure.
WARRANTY Products manufactured by Sin City Misting bear the following limited warranty:
The seller warrants that the goods to be delivered will be of the kind and quality described in the order or contract and will be free of defects in workmanship or material.Should any failure to conform to this warranty appear within one  year after the date of shipment or installation, the seller shall, upon notification thereof and substantiation that the goods have been stored, installed, maintained and operated in accordance with the seller's recommendations and standard industry practice, correct such defect by suitable repair or replacement at its own expense.This warranty is limited to repairing or replacing products which the manufacturer's investigation shows were defective at the time of shipment by the manufacturer.All products subject to this warranty shall be returned for examination, repair or replacement, freight prepaid to Sin City Misting.
This warranty is exclusive and is in lieu of any warranty or merchant ability, fitness for a particular purpose or other warranty of quality, whether express or implied. Correction of nonconformities, in the manner and for the period of time provided above, shall constitute fulfillment of all liabilities of the seller to the purchaser with respect to, or arising out of the goods, whether based on contract negligence, strict tort or otherwise.
LIMITATION OF LIABILITY Repair or replacement of the defective products as provided above is the sole and exclusive remedy provided hereunder and the seller shall not under any circumstances be liable for special or consequential damages such as, but not limited to, damage or loss of other property or equipment, loss of profits, or revenue, cost of capital, cost of purchased or replacement goods, or claims of customers of purchaser for service interruptions.
NO OTHER WRITING OR DESCRIPTION IN THE LITERATURE SHALL BE CONSTRUED AS A WARRANTY.