NISCO Fan Co. makes Low Profile Positive Pressure Ventilators that have been designed to fit in tight compartments ans small spaces without scarificing performance or features. These compact ventilation blowers are available is both gasoline driven conviguration and with 115/230V single phase electric motor. The Positive Pressure Blower is a high volume fan use to pressurize a burning structure, in case of fire, in order to force the smoke out. Positive Pressure Blowers are portable, gasoline powered fans, most of which utilize a 5. 5 horsepower engine. The theory of positive pressure ventilation is based on the principal of even pressure distribution. Once a structure is pressurized, air and smoke can be forced out through any opening (similar to escaping from an inflated baloon). Electric smoke ejectors (negative pressure ventilation) can be used for smoke removal but this has proven to be inferior to positive pressure ventilation. What makes Positive Pressure Ventilation superior to negative pressure ?* The risk of injury from the engaged structure is reduced while placing the fan in operation. * Positive pressure ventilation is faster to set up and requires fewer personnel. * The Positive Pressure Blower has a self contained power source, while electric fans require cords and adaptors. * Smoke and heat is removed from all levels of the structure unlike negative pressure which can result in localized extraction. * Quicker results. After initial knockdown, positive pressure ventilation can be initiated and will show immediate improvements in the interior conditions. * It allows replacement of contaminants with vital cooler, cleaner air – especially in sealed or windowless buildings. It’s also very effective in large and compartmentalized buildings, warehouses, schools, etc. * Quick results allow firefighters faster entry due to lower heat levels and improved visibility. The following criteria should be considered for effective use of Positive Ventilation:- The cone of air must cover the intake opening. The fan must be placed the correct distance from the structure such as that the cone of air forms a seal around the opening. – The size and location of the discharge is important. The discharge, if at all possible should be as high and far away from the intake as is practical. The discharge size should be between 3/4 to 1/2 times the intake. This may not always be possible as the fire may have already dictated discharge locations and sizes; but whenever there is a choice, the above criteria should be used. – It is important to control the ait flow between the intake and discharge. Positive pressure ventilation can move air long distances if proper control is maintained by opening and closing doors, windows, etc. It is important that firefighters understand not to open the structure too much: ie breaking windows, etc. The standard features of NISCO Fan Co. Positive Pressure Ventilators include: fold down “T” handle; 8″ pneumatic tires with full width axle; a “tilt and lock” device that allows the unit to be angled 20 degrees up or down with infinite positions in between; sturdy and light 1 inch wrap around frame. Explosion proof electric motors are available as drivers too. The optimum ventilator placement distance on most 6′6″ doors is about five to six feet away. If placement is too close, the seal won’t be achieved. If placement is too far away, the cone of air will be hitting well outside the opening. Additional information can be found at the NISCO Fan Co. company web site http://nisco. net/news. html. Oleg TchetchelCanadian Industrial Air Systems DesignerNISCO Fan Co. http://nisco. net/index. htmlhttp://nisco. net/aircurtain. html

Industrial blowers are manufactured using a range of durable plastics and metals, or a combination of both materials. For example, industrial blowers operating in corrosive environments are usually made of polypropylene because it provides greater structural integrity and corrosion resistance, and will never de-laminate. Typical recommendations in the construction of industrial blowers are – fiberglass for temperatures above 220 degrees, and metal if pressure is above 10 w. g. (water gage). The size of the blower may be regulated by the size of the environment in which it is to be operated. For instance, some units are big enough to house both the fan and its power supply. Smaller, portable blowers are mainly used for cleanups and in spaces that require temporary circulation or air transfer. Industrial blowers are mainly used to circulate the movement of air and gas in ventilation applications. Their main function is to replace impure or contaminated air with fresh air by swirling it around. Almost every industry, including agricultural, chemical, medical, oil and gas, automotive, food processing, mining and construction use blowers for different purposes such as drying, reducing heat levels, reducing smoke and odors, processing and controlling gaseous fumes. The air movement and control association recognizes three classes of industrial blowers, classified with numerical designation that is based on how the fan is constructed. The United States’ specifications for industrial blowers depend on the airflow in CFM (cubic feet per minute), static pressure in inches, water gage, altitude and approximate air temperature. Here’s an example: Air conditioning can often become too large of an expense for industrial areas, but the good news is that an industrial fan can bring some much needed relief in this case. Industrial electric fans can be quite helpful for places where heat stratification, dampness, and stagnant air become frequent problems. Also, for high static pressure an industrial fan is what you need. Also known as an industrial electric blower, these units replace air as well by blowing out the old and stagnant air for a wide area that otherwise would collect this air without replenishing it in entirety. Industrial fans also are helpful in removing pollutants like dust and metal particles, carbon monoxide, nitrous oxides, sulfur dioxide, sulfuric acid, and hydrocarbon solvents. Plus, industrial electric fans clearly do not use as much electricity as an air conditioner, circulating air and cooling it at a fast rate for a large space. With high-powered, energy-efficient motors, the larger motor of an industrial fan is actually guaranteed to save energy costs. Tenderall Fan Co. is a supplier of blowers and fan for Pulp and Paper Industries. Tough applications mean tough fans and blowers by Tenderall Fan Co. Tenderall is a world wide distributor of industrial process ans OEM fans and blowers, as well as fan / blower components; including high pressure blowers, high temperature fans, spark resistant and explosion proof ventilators, tubeaxial and vaneaxial high pressure ventilators. Canada Blower also does existing fans and blowers repairs, re-build, as well as dynamical wheels balancing. High-efficiency impellers result in low power consumption, operating costs, and quieter operation. All metal hardware is completely sealed from exposure to corrosion by incapsulating into FRP or plastic; the steel support frame and motor base are powder coated with a corrosion-resistant finish. In addition to being highly resistant to chemical corrosion, PP fans are self-extinguishing and will not support combustion. For additional information please refer to http://www. tenderall. com/contact/index. html. Oleg ChetchelIndustrial Process Equipment EngineerTenderall Fan Co. http://www. tenderall. com/fanblower/index. htmlhttp://www. tenderall. com/index. html

Industrial blowers are mainly used to circulate the movement of air and gas in ventilation applications. Their main function is to replace impure or contaminated air with fresh air by swirling it around. Almost every industry, including agricultural, chemical, medical, oil and gas, automotive, food processing, mining and construction use blowers for different purposes such as drying, reducing heat levels, reducing smoke and odors, processing and controlling gaseous fumes. Industrial blowers are manufactured using a range of durable plastics and metals, or a combination of both materials. For example, industrial blowers operating in corrosive environments are usually made of polypropylene because it provides greater structural integrity and corrosion resistance, and will never de-laminate. Typical recommendations in the construction of industrial blowers are – fiberglass for temperatures above 220 degrees, and metal if pressure is above 10 w. g. (water gage). The size of the blower may be regulated by the size of the environment in which it is to be operated. For instance, some units are big enough to house both the fan and its power supply. Smaller, portable blowers are mainly used for cleanups and in spaces that require temporary circulation or air transfer. The air movement and control association recognizes three classes of industrial blowers, classified with numerical designation that is based on how the fan is constructed. The United States’ specifications for industrial blowers depend on the airflow in CFM (cubic feet per minute), static pressure in inches, water gage, altitude and approximate air temperature. Here’s an example: Air conditioning can often become too large of an expense for industrial areas, but the good news is that an industrial fan can bring some much needed relief in this case. Industrial electric fans can be quite helpful for places where heat stratification, dampness, and stagnant air become frequent problems. Also, for high static pressure an industrial fan is what you need. Also known as an industrial electric blower, these units replace air as well by blowing out the old and stagnant air for a wide area that otherwise would collect this air without replenishing it in entirety. Industrial fans also are helpful in removing pollutants like dust and metal particles, carbon monoxide, nitrous oxides, sulfur dioxide, sulfuric acid, and hydrocarbon solvents. Plus, industrial electric fans clearly do not use as much electricity as an air conditioner, circulating air and cooling it at a fast rate for a large space. With high-powered, energy-efficient motors, the larger motor of an industrial fan is actually guaranteed to save energy costs. Canada Blower Co. is a supplier of blowers and fan for Pulp and Paper Industries. Tough applications mean tough fans and blowers by Canada Blower. Canada Blower is a world wide distributor of industrial process ans OEM fans and blowers, as well as fan / blower components; including high pressure blowers, high temperature fans, spark resistant and explosion proof ventilators, tubeaxial and vaneaxial high pressure ventilators. Canada Blower also does existing fans and blowers repairs, re-build, as well as dynamical wheels balancing. High-efficiency impellers result in low power consumption, operating costs, and quieter operation. All metal hardware is completely sealed from exposure to corrosion by incapsulating into FRP or plastic; the steel support frame and motor base are powder coated with a corrosion-resistant finish. In addition to being highly resistant to chemical corrosion, PP fans are self-extinguishing and will not support combustion. For additional information please refer to http://www. canadablower. com. Susan TerlitskiCanadian air systems engineerCanadian Blowerhttp://www. canadablower. com/blowers/index. htmlhttp://www. canadablower. com/fans/index. html