The Premier Industrial Evaporative Cooler (PIEC) is designed to be the highest quality
and efficiency direct evaporative cooler available today. It is the leader in design, housing medium and cooling
medium.
The PIEC is designed to meet all the requirements of the application. If the air volume required is 10,000 CFM @ .5" external static pressure, then that air volume will be delivered at that external static pressure. A good example of misleading specifications is the conventional "swamp cooler". The "nominal" or "industry standard" air volume shown in the swamp cooler manufacturer's literature is based on 0" external static pressure often called "free air". The 0" static pressure is non-existant in an actual application. The actual air delivered for this swamp cooler is actually about 8500 CFM @ .5" external static pressure, however it is still called a 10,000 CFM cooler. Many Engineers have made the mistake of designing cooling systems on the premise that 10 each 10,000 CFM swamp coolers would deliver 100,000 CFM @ .5" external static pressure when they would only deliver 85,000 CFM. The mistake is to take the claims at face value without sufficient investigation.
Still another example. The common residential type swamp coolers called either 3300 CFM or 4500 CFM or 6500 CFM and often installed with the expectation that they will deliver that volume of air. The truth is that the 3300 CFM will actually deliver only about 2400 CFM and the 4500 CFM will deliver only 3300 CFM and the 6500 CFM will deliver only about 4700 CFM in most existing duct systems and/or deliver systems. The person who buys two (2) 4500 CFM coolers expecting 9000 CFM total to be delivered out of their registers will only receive about 6600 CFM.
This is why Premier will only list and specify actual CFM delivered under specified external static pressure.
Premier uses Stainless Steel, grade 304 for the entire housing of their evaporative coolers. This type housing is a virtual lifetime use medium. Galvanized steel whether or not painted, has a very limited useful life span. Painted plain steel is also very limited in useful life span. The various types of plastics have problems with dimensional stability (meaning they warp and can crack in high heat areas). Fiberglass is a good substitute but cost is prohibitive and dimensional instability can occur. Outside surface is often irregular.
The only sensible housing medium is Stainless Steel, grade 304. It is commonly used in kitchen equipment including the kitchen sink and the cost is usually about equal to the other metal finishes.
Premier uses only Rigid Media for its' cooling medium. Either CELdek (r) or GLASdek (r) as manufactured by Munters Corporation or Glacier-Cor(tm) as manufactured by Glacier-Cor is used to assure the highest efficiency and longest useful available. Thickness of the media is 12" standard, however any thickness is available up to 24" thick. Average useful life is 2 to 3 years without changeout under normal operating conditions.
GLASdek(r) is used when fire codes require it. It meets the requirements of UL900.
Standard Industrial Cooler Sizes
Industrial Cooler Written Specifications
