Archive for the 'Cooling' Category

Evaporative Cooling

Sunday, March 4th, 2007
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Anywhere You Need to Beat the Heat! — Portable Evaporative Cooling Units provide spot and area cooling where you need it, when you need it.

Evaporative cooling is a time-tested and efficient means of reducing air temperature by drawing incoming air across a wetted surface. Evaporative cooling is especially useful in situations where air inside the space to be cooled is well ventilated.
Evaporative cooling needs only two factors to work: water and moving air. When air is moved across a wet surface, some of the water on the surface evaporates. This action draws heat from the moving air, thereby cooling and dropping the ambient temperature.The efficiency and cooling ability evaporative cooling possesses make it a wise choice for:
Automotive Service Areas
Body Shops
Manufacturing Plants
Warehouses
Production Facilities
Exercise Facilities
Outdoor Restaurants
Greenhouse / Garden Centers
Sporting Events / Cooling Athletes

Evaporative Cooling And Port-A-Cool®

Sunday, March 4th, 2007

Port-A-Cool is an amazing new product, fully developed in 1992, which offers many exciting versatile options for cooling when standard air-conditioning may be unavailable, impractical or cost prohibitive. It operates at a 10th of the cost of conventional air-conditioning and is capable of cooling thousands of square feet 20 degrees or more, saving Port-A-Cool customers hundreds, or even thousands of dollars per season!Since Port-A-Cool is a state of the art, high efficiency, portable evaporative cooling system, its high efficiency cooling media coupled with a unique housing design, allows Port-A-Cool to cool effectively in very high relative humidity conditions. Conditions that no other portable evaporative cooling device, such as a “swamp cooler” could possibly approach. Since, as its name implies, it is portable, Port-A-Cool can be easily moved around shops, factories, back yards, sporting events and hundreds of other areas for maximum effectiveness, comfort and increased productivity.Port-A-Cool uses a specially designed ridged cooling media, contained in a properly designed housing to insure effective direction of the air over the water saturated media at the proper air velocity. The effectiveness of Port-A-Cool is best appreciated when the temperature is above 95° F. and below 75% relative humidity.Each Port-A-Cool model has a single piece roto-molded housing constructed of very durable cross-linked corrosion free polyethylene.

A strong galvanized steel fan is driven by a powerful 1 HP motor (48″ model, 1/2 HP motor (36″ & 24″ models) and a 1/4 HP motor (16″ model) totally enclosed and air cooled.The water supply is controlled by a float valve and completely submersible self-priming 1/6 horsepower pump.PVC and ABS plastic plumbing parts create a simple internal design which stays practically corrosion free.Easily replaceable, long lasting, resin-impregnated KÜÜL™ kraft paper cooling pads allow access to all internal parts.A lot of folks have an initial tendency to relate Port-A-Cool with the term, “swamp cooler”. In reality, the only thing that they have in common is that they are both evaporative type coolers, much the same as a 1949 model automobile and a new 2003 automobile, are both cars.One uses a lot of gasoline and travels slow, the other can travel at high speeds of over 100 M.P.H. Which is more efficient today?

The key to efficient evaporative cooling is using a specially designed, high efficiency, rigid cooling media contained in a properly-designed housing to ensure effective directing of the cold air over the water-saturated media at the proper air velocity. Port-A-Cool®, and ONLY Port-A-Cool®, has incorporated all of these features and MORE. The unique patented design of Port-A-Cool®, coupled with its high efficiency rigid cooling media, allows Port-A-Cool to cool effectively in very high relative humidity conditions, conditions that no other portable cooling device, such as the old style “swamp cooler”, could possibly approach.

“swamp coolers” Port-A-Cool®
A “swamp cooler” at best, cools the temperature, in a small 800 sq. ft. area, about 8 degrees. Port-A-Cool reduces the temperature within thousands of square feet by as much as 20 degrees or more!
“Swamp coolers” waste water and usually have straw fibers woven through “chicken wire” in the back and sides of their rusty metal housings to disperse the water. Port-A-Cool has KÜÜL™ cooling pads made of tough kraft paper, 6″ thick, with 37° fluted angles. This cooling media is coated with a resign treatment to allow the cooling pads to absorb an enormous amount of moisture. This resign treatment also makes the pads remain firm for years so that the proper amount of air flow is allowed to travel through the pads, which causes the air to become cold when it reaches the front of the unit. The only water being used is evaporated in order to cause the cooling process to take place.
“Swamp coolers” have a “squirrel cage” fan that not only is very noisy, but at best, only produces about 4200 CFM (cubic feet per minute air flow). Port-A-Cool produces up to 17,000 CFM, more than twice the amount of air thrust, to cool a much larger area more effectively. Even with all this power, the belt driven 36″ four blade fan is extremely quiet (only 72dB at full speed when standing next to the unit). The powerful 1/2 horse power motor makes absolutely NO NOISE, only the sound of wind from the fan.
“Swamp coolers” are clumsy and must be mounted on the roof, in a window or an opening in the wall. Port-A-Cool, as its name implies, is portable and goes with you ANYWHERE. Even outdoors, the cooling is noticed for at least 50 ft. or more. Since it is portable, it can be used to “spot cool” in areas where needed at any time.


When you consider the efficiency of a single PORT-A-COOL® unit, as compared to how many “swamp coolers” it would take to match one Port-A-Cool®, it even costs less to purchase Port-A-Cool®! And, the daily cost to operate a Port-A-Cool® is only 50¢ (based on a national average of water and electricity cost).

Port-A-Cool® is an amazing portable cooler, fully developed in the summer of 1992, which offers many exciting versatile options for portable cooling when standard air-conditioning may be unavailable, impractical or cost prohibitive.

Most people sleep better, enjoy activities and work with more productivity when the temperature is pleasant. Port-A-Cool® provides air that makes you comfortable at work or at play. Since, as its name implies, it is portable, Port-A-Cool® goes with you in the yard while doing landscaping or gardening and in the garage for cooling home projects

It has been proven to companies for many years that productivity is increased substantially when workers in offices and factories have an air-conditioned environment to work in. The same is true for athletes in training, construction work, and numerous other outdoor jobs.


Working in a cool environment improves the efficiency of workers. Employees stay more alert and become less tired. They make fewer mistakes and work more safely. Since productivity and sales are increased, employers benefit greatly by having a Port-A-Cool® at the job site. Up to 57% increase in worker productivity has been documented due to the employers adding Port-A-Cool® to a facility!

Most people feel comfortable when the air temperature is between 72° F. (22° C.) and 78° F. (26° C.). The evaporation of moisture from our skin helps cool our bodies. Port-A-Cool® is an elaborate cooling system capable of cooling thousands of square feet by as much as 20° and operates simply on electricity and water at a fraction of the cost of standard air-conditioning.


Save 90% or more on the cost to cool your facility, warehouse, factory, auto repair shop, tennis court, stadium sidelines, practice field, laundry, kitchen, outdoor swimming pool, assembly line, garden, home garage workshop, golf driving range or any number of areas where cooling is needed, however, was too expensive. Now, thanks to Port-A-Cool® you can cool those “impossible” areas!

The WayCool portable evaporative cooler with greater cool air output, smaller size, lower cost and better looks.

On a typical hot day, the air leaving a WayCool is 20°F cooler. Use WayCool portable evaporative cooling fans to cool almost any area - indoor and out!

110° of Oscillating Air

Now you can purchase our WayCool evaporative cooler with an optional oscillating spout. With an arc of 110°, the oscillating WayCool evaporative cooler distributes cool air to an even larger area. No other evaporative cooler on the market offers this unique advantage. The unique WayCool design STILL dramatically outperforms all other portable evaporative coolers, with greater cool air output, smaller size, lower cost and good looks. Go to the non-oscillating link for the features that apply to both models


WayCool reduces air temperature up to 20°F!

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Model # HP Volts Base Height Discharge
Opening
WC-1HP-OSC: 24 gallon water capacity
WC-1HPMFOSC: Manual fill, 24 gallon capacity
WC-1/3HP-OSC: 14 gallon water capacity

 

 

COOLS AIR TEMPERATURE UP TO 20°F

  • High effiency cooling pads
  • High impact ABS plastic with UV protection
  • Simple maintenance required
  • Low operating cost
  • Continuous fill or manual fill
  • Cord connected
  • ETL certified for United States and Canada

I Locations: • Petroleum Refineries• Gasoline Storage Areas• Dispensing Areas• Dry Cleaning Plants• Spray Finishing Areas
• Aircraft Hangers• Fuel Servicing Areas• Utility Gas Plants
Typical Class II Locations: • Grain Elevators•Flour and Feed Mills
• Plants that Manufacture, Use or Store Magnesium or Aluminum Powders•Producers of Starch or Candies•Spice-Grinding Plants, Sugar Plants and Cocoa Plants• Coal Preparation Plants and other Carbon Handling or Processing Areas
Typical Class III Locations: Textile mills, Cotton Gins, Cotton Seed Mills, Flax Processing Plants Plants that Shape, Pulverize or Cut Wood and Create Sawdust or Flyings.

Certified for Class I, Division 2, Group D & Class II, Groups F & G and Class III Hazardous (Classified) Locations
 

Class I: Hazardous location is one in which flammable gases or vapors may be present in the air in sufficient quantities to be explosive or ignitable.
Class II: Are those areas made hazardous by the presence of combustible dust.
Class III: Are areas where there are easily-ignitable fibers or flyings present, due to the types of materials being handled, stored, or processed.
Division 2: Not normally present in an explosive concentration (but may accidentally exist).
Testing/Certifications Standards: Electrical Equipment for Use in Class I and Class II, Division 2 and Class III Hazardous(Classified) Locations.
[UL 1604, Third Edition, October 6, 1995, Including: Bulletins dated 3/22/95 & 5/17/96]
Non-Incendive Electrical Equipment for Use in Class I, Division 2 Hazardous Locations [CSA C22.2 No. 213-M1987]
Electrical Fans [UL-507, Ninth Edition, 9/24/01 and Fans and Ventilators [CSA C22.2 No. 113-M1989. Sixth Edition]<!–[if !supportLineBreakNewLine]–>

Schaefer Ventilation Equipment has done it again! The newest addition to our family of ultimate cooling products brings you the Pro-Kool Evaporative Spot Cooler. The Pro-Kool evaporative cooler is constructed of a solid, UV protected, roto-molded housing with an attractive slate grey finish. Pro-Kool boasts a 42 inch fan, yet takes up less floor space than competitor’s 36 inch models. The rugged 1 hp motor helps generate 12,418 c.f.m., delivering 20% more cooling comfort wherever you need it. The 38 gallon water reservoir, makes Pro-Kool more convenient, and adaptable. The six wing, 42 inch stainless steel fan blade produces optimum air movement with less noise. Special rugged edge coated cooling pads last longer and allow for easier cleaning.

History Of The Evaporative Cooling Phenomenon

Sunday, March 4th, 2007

The ancient Egyptians, Greeks and Romans used wet mats (what we would call cooling pads today) to cool indoor air. They hung the mats over the doors of their tents and other dwellings. When wind blew through the mats, evaporation of the water cooled the air inside. The people of India later used this method to cool the royal palaces.

During the 1500’s the first mechanical fan was built to provide ventilation. In 1800, textile manufacturers in New England began using water evaporative systems to condition the air in their mills. The systems consisted of large “cooling towers” with fans that transported the water-cooled air inside buildings.

In 1939 “swamp cooler” type devices were produced and presented relief from heat for homes and facilities. They cooled the temperature on certain days, when the relative humidity was low, around 8 degrees.

What Is Evaporative Cooling?

Sunday, March 4th, 2007

When water evaporates from the surface of something, that surface becomes much cooler because it requires heat to change the liquid into a vapor. A nice breeze on a hot day cools us because the current of air makes perspiration evaporate quickly. The heat needed for this evaporation is taken from our own bodies.

As air comes in contact with water it absorbs it. The amount of water absorbed depends largely on how much water is already in the air. The term humidity describes the level of water in the air. If the air holds 50% of its capacity, the humidity would be 50%. If the humidity is low, then the capacity to hold more water is higher, and a greater amount of evaporation takes place.

When the air contains large amounts of moisture, the humidity is said to be high. If the air contains only a small amount of moisture, the humidity is said to be low. When the air holds as much moisture as possible at a certain temperature, the air is saturated. At saturation, the temperature and the dew point are the same. The amount of humidity varies according to the temperature and location. The warmer the air, the more moisture it is able to hold.

The amount of water in the air compared to the amount required for saturation is called relative humidity. If the air contains only half the amount of moisture it can hold when saturated, the relative humidity is 50%.

In order to evaporate water, heat is required. A British Thermal Unit, or B.T.U., is a unit used to measure heat. The evaporation of 1 gallon of water requires almost 8,700 B.T.U.’s of heat. This heat comes from whatever the water is in contact with as it evaporates. This could be a hot sidewalk, a tree, your body, from the air itself, or from wet cooling pads on a Port-A-Cool. As heat is removed from an object, the temperature of that object is decreased, in this case, the air.

The temperature of the water does not have a great effect upon the cooling produced through evaporation. If you placed a gallon of 50° F. water on a warm sidewalk (90° F.), it would produce 9,000 B.T.U.’s of cooling. A gallon of 90° F. water would produce 8,700 B.T.U.’s of cooling, only 3% difference.

The following demonstrates the B.T.U.’s removed from the air based on a given amount of water consumed in an hour:

2 gallons……………..17,400 B.T.U.’s removed
3 gallons……………..26,100 B.T.U.’s removed
4 gallons……………..34,800 B.T.U.’s removed
5 gallons……………..43,500 B.T.U.’s removed

A cubic volume of air at a certain temperature has the ability to hold a certain amount of moisture. In the morning the humidity may be high, but as the day passes and the temperature increases, the relative humidity will naturally decrease. The extent to which relative humidity decreases through the day can be affected by weather systems and proximity to large bodies of water. If a weather system moves in that has a lot of water associated with it already, the drop in humidity will not be as great. Relative humidity drops as air temperature increases. For every 20° rise in temperature, the moisture holding ability of air doubles. For instance, if the temperature of the air was 70° F. and the relative humidity was 100% at 5:00 A.M. and the temperature increased to 90° F. at noon, the moisture holding ability of the air would be twice as much. As a result, the air would now hold only half of the moisture it is capable of holding and the relative humidity of the air would drop to 50%.

The hotter the day, the dryer the air becomes, and the more cooling that can take place through the evaporation of water. When the day gets hot enough to require cooling, the relative humidity will be much lower than in the morning and allow evaporative cooling to work more efficiently.

The efficiency of any evaporative cooling device is directly related to its ability to evaporate water (cool) at a given relative humidity. Units, sometimes described as, “swamp coolers”, with low efficiency will cool only at low relative humidity levels, while a high efficiency unit, such as a Port-A-Cool, can achieve effective cooling at much higher humidity levels.