Why To Use Evaporative Coolers For Commercial Purposes

Evaporative coolers for commercial purposes? It may sound strange since we all are used to personal evaporative coolers. The concept of commercial air coolers is the same as the one that you use at your home. The difference lies in the size of the unit and the area covered. Industries need big sized air coolers that are capable of cooling larger areas. Moreover, the evaporative coolers used for commercial purposes require good quality durable cabinets, usually made of stainless steel with long lasting wet pads and heavy pumps. They are efficient in providing area and spot cooling within no time.

Air Coolers In Workplace

It is believed that to work properly in your workplace, you need to have a room temperature of around 23 - 24

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Posted on July 7th, 2008 by itbsuperrich
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Swamp Coolers - Cool Air At Low Cost

A swamp cooler, an earthen pot for cooling drinking water, cooling tower, and human skin, work on the same principle. The principle is evaporative cooling. Water is broken down into smaller droplets and air forced through it. Heat transfer takes place from water to air or air to water depending on the design of the equipment. In human skin, the heat is taken away from the body when sweat on surface of skin evaporates.

Construction Of Swamp Coolers

The swamp coolers consist of a box and a fan is situated inside the box. On the suction side of fan, there are pads. These pads are made of wood shavings or PVC. A small water pump directs water on top of the pads. The construction of pads is such that the incoming water is broken down into small water droplets and air going to suction of fan goes through these small droplets. So in essence, it is just a box with a pump and a fan & lot of pads for breaking water into smaller droplets. The construction might also include a distributor for air delivery so that the air is equally distributed in all areas of the room.

Other variations include a common motor for pump and fan, thus further reducing construction complexity

The controls of swamp coolers include controls for fan speed, a float valve for maintaining water level in the basin of cooler and controls for air delivery. Some portable swamp coolers have water level indicators instead of float valve and water level has to be maintained by pouring water from outside.

Condition affecting performance

There are no controls for temperature of outgoing air since it cannot just be controlled. It is a “take it or leave it” type of machine with absolutely no control on the out let air temperature. The out let air temperature is the result of atmospheric air temperature and atmospheric humidity. The lesser the relative humidity, the higher is the performance for a given inlet temperature. At the same relative humidity, higher inlet temperature increases the cooling ratio. Therefore, you can see that the air-cooling cannot be controlled. If this is the case, why have a swamp cooler at all? The answer is, air conditioning was invented about in1902 and there was no choice before it. Now it is a question of money. If you wish to have a low initial cost and low operating cost solution, swamp cooler is the only alternative.

How to choose your swamp cooler

The capacity of swamp coolers is on cubic feet per minute (CFM) capacity of air delivery fan. If the room dimensions are 15 feet by 12 feet and 8 feet high, then room capacity will be 15*12*8 = 1358 cu ft. The fans are designed to have complete change of room air every 5 minutes. This means that the capacity of fans will be 1358 divide by 5, or approximately 280 CFM. This capacity is for a fan that draws cold air from the room. If the same swamp cooler is fixed in a window, the capacity will increase, as recirculation will be reduced to zero.

Matthew Anderson adds regularly reviews on air conditioners to http://www.evaporative-air-coolers.com. An online information magazine about the basics of how evaporative air coolers work and some of the advantages of the technology for a good home air conditioning. Find your swamp cooler at http://www.evaporative-air-coolers.com/swamp-coolers.html

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Posted on July 2nd, 2008 by itbsuperrich
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Alternative Cooling

My favorite alternative cooling device is a gin and tonic. It’s portable, easy to operate and provides instant on-demand refreshment.

Is there such a thing as a Tanqueray energy tax credit?

Although you can install solar panels, a wind turbine or micro hydro to generate the electricity to run an air conditioner, the only true whole house alternative cooling method is a geothermal ground source pump.

The cost of this type of system can be recouped in as little as two years on a new house installation, but the initial capital outlay is more than most homeowners can afford.

Let’s say you re-mortgage your house for $20,000 and you have a choice between a new kitchen and a geothermal heat pump; how many new heat pumps have your neighbors been showing off lately?

Less expensive options to consider:

Weatherization

The only people who haven’t learned the value of caulking, weather stripping and insulating yet are living in caves or tents.

Fans

Ceiling, paddle, and portable fans produce air motion across your skin that increases evaporative cooling. A moderate breeze of one to two miles an hour can extend your comfort range by several degrees.

Whole House Fans and Evaporative (Swamp) Coolers

These devices can reduce your air conditioning costs by 50% or more but are only effective if you live in a dry climate (less than 40%humidity).

White Roofing

Elastomeric roof coatings reflect 90% of the sun’s rays and will reduce the indoor temperature by 7 degrees according the independent research laboratory MER Corporation. These coatings are for flat roofs and cost around .50 per square foot to apply.

Radiant Barriers

These shiny, reflective barriers keep excess heat out of your attic in the summer or keeping your floors warm in the winter. Stapled under the rafters or joists, it reflects 97 of the radiant heat that strikes it. The non-profit Florida Solar Energy Center has shown that an attic radiant barrier can reduce air conditioning costs by at least 20%.

Air Conditioners

Clean the filter once a month. Turn off your A/C when you leave for more than an hour. It saves money. Draw the shades while you’re at work. Close off unused rooms or, if you have central A/C, close the registers in those rooms and shut the doors.

Set your A/C thermostat at 78

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Posted on June 29th, 2008 by itbsuperrich
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