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Mechanical Draft Fans Ventilators Posted By: Oleg Tchetchel








fan impeller fan Mechanical Draft Fans Ventilators Posted By: Oleg Tchetchel Radial-blade fans were at one time commonly used for induced draft service. However, as pollution requirements have become more stringent and control devices have been added to reduce flue gas particulates (ahead of the induced draft fan), radial-tip blade or even backwardly-inclined fans have become popular due to their higher efficiencies and higher volumetric characteristics. The exception to this is where high efficiency scrubbers are used and the pressure requirements are increased to where the radial-bladed fans are more suited. The burning of gas, oil, coal, or other combustible material requires air. When the end result of the burning is to be an efficient combustion process, in compliance with Federal and State Clean Air Act requirements, the volume of supply air must be reliably controlled. Insufficient air volume will result in wasted fuel and excessive particulate along with potentially explosive gases in the exhaust system. Too much air increases the amount of heat carried up the stack by the excess draft. Either extreme increases the cost and difficulty of controlling exhaust emissions. Air can be supplied to the combustion process by natural or mechanical draft.








fan impeller fan Mechanical Draft Fan Blower Posted By: Chicago Blower








fan impeller fan Mechanical Draft Blowers Posted By: Oleg Tchetchel Mechanical draft refers to the use of fans or blowers to create airflow through the combustion area. When mechanical draft is incorporated, the chimney or stack is used primarily to direct the exhaust gases up and away where they will not be a nuisance. Because wind velocity and direction are less important, the combustion process can be much more carefully controlled. Mechanical draft is accomplished in one of two ways: when air is blown or forced into the combustion chamber it is known as forced draft, when the air is drawn through the combustion chamber it is called induced draft. When both forced and induced draft are used, the system is termed a balanced-draft system. The burning of gas, oil, coal, or other combustible material requires air. When the end result of the burning is to be an efficient combustion process, in compliance with Federal and State Clean Air Act requirements, the volume of supply air must be reliably controlled. Insufficient air volume will result in wasted fuel and excessive particulate along with potentially explosive gases in the exhaust system. Too much air increases the amount of heat carried up the stack by the excess draft.








fan impeller fan Mechanical Draft Fan Posted By: Oleg Tchetchel








fan impeller fan Residential Electric Steam Humidifiers Skr Posted By: Oleg Tchetchel The recommended indoor relative humidity (percentage of moisture in the air) level is 35%. Many homes can have a relative humidity level as low as 7% in the winter. Pneumococcus, staphylococcus, and streptococcus bacteria die up to 20 times faster at relative humidity between 45% and 55%, than above 70% or below 20%. One of the most common health issues that plague our society is dehydration. Most of the tissue in the body is composed of water. If it loses the water, the tissue dries up, its elasticity goes, and with it function declines. Besides dry skin, the symptoms of dehydration include chronic joint and muscle pain, raspy throat, sore eyes, and difficulty concentrating. Humidification can protect your investments. Controlling the amount of moisture in the air is necessary for your family’s health. Dry air in your home can make your throat feel dry, and cause or aggravate respiratory ailments. During extremely cold weather, your home loses humidity to the outdoors and may drop to as low as 5% relative humidity. Cold air inside a home heated to 73 degrees can have a relative humidity approaching 6%. By comparison, typical humidity in the Sahara Desert is about 25%.








fan impeller fan Wet Type Dust Collectors For Air Cleaning Posted By: Oleg Tchetchel Canadian Air Systems Co. is a well known designer and manufacturer of industrial wet scrubbers for air cleaning. Wet type dust collectors / air scrubbers are available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction. Wet type dust collectors are liquid (usually, but not necessarily, water) to capture and separate particulate matter (dust, mist, and fumes) from a gas stream. Some scrubbers operate by spraying the scrubbing liquid into the contaminated air. Others bubble air through the scrubbing liquid. In addition, many gybrid wet scrubbing designs exist. Particle sizes, which can be controlled by a wet scrubber, range from 0.3 to 50 microns or a bit larger. Wet collectors may be used for the collection of most particulates from industrial process gas streams where economics allow for collection of the material in a wet state. Advantage of wet collectors over dry type dust collectors include: * Constant operating pressure; * No secondary dust sources; * Little spare parts requirements, low maintenance in operation; * Ability to collect both gases and solid / liquid particulates;








fan impeller fan Reverse Flow Dust Collectors For Air Cleaning Posted By: Oleg Tchetchel Canadian Air Systems Co. is a North American manufacturer of industrial dust collectors and dust collection systems. Dust collecting equipment is available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction. The dust collectors are used extensively in industry for a wide range of applications. They require more space than most other types of air cleaning devices, necessiating outdoor installation in most cases. One of the most widely used type of dust collector is Fabric Dust Collector. Fabric arresters are high efficiency, medium cost collectors. The effectiveness of passing air or gas through a fabric at low velocity has been recofnized and used for many years in air cleaning devices. Fabric is arranged in envelope or tubular (stocking) shapes. While removal appears to take place by a staining action of the media, in reality dust collection is obtained by building up a mat of the material on the dirty side of the media. This mat provides the actual filtering or straining bed. By means of this bed a high degree of removal is obtained even on sub-micron size particles.








fan impeller fan Fabric Dust Collectors Posted By: Oleg Tchetchel Canadian Air Systems Co. is an engineering company that designs industrial dust collection systems. Dust collecting equipment is available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction. One of the most widely used type of dust collector is Fabric Dust Collector. Fabric arresters are high efficiency, medium cost collectors. The effectiveness of passing air or gas through a fabric at low velocity has been recofnized and used for many years in air cleaning devices. Fabric is arranged in envelope or tubular (stocking) shapes. While removal appears to take place by a staining action of the media, in reality dust collection is obtained by building up a mat of the material on the dirty side of the media. This mat provides the actual filtering or straining bed. By means of this bed a high degree of removal is obtained even on sub-micron size particles. The dust collectors are used extensively in industry for a wide range of applications. They require more space than most other types of air cleaning devices, necessiating outdoor installation in most cases.








fan impeller fan Mechanical Draft Fans Posted By: Oleg Tchetchel








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