The replacing and exchanging of air in any room or space to ensure quality air for the indoors is known as ventilation. During construction, proper ventilation is a key factor when planning for indoor air quality. Among the various methods of ventilation and air conditioning, the most used are the fans and blowers. The 19th Century brought with it some of the topmost sources of ventilation equipment which include roof fans, supply fans, chimney exhaust, kitchen fans, ceiling fans, centrifugal blowers, inline fans as well as utility sets.
The classifications of fans used for air conditioning include propeller tube-axial, centrifugal and vane axial
The practice of providing quality ventilation since the early 19th Century has largely been done by Brooklyn Fans and Blower Sales Company. The output of a fan can be defined in many ways when measuring its performance. The methods used to define the output of a fan include air per unit of time, full of pressure, static pressure, the power of the input signal as well as the speed. High usage applications needing high power capacity are classified into commercial exhaust fan. Commercial exhaust fans may also be used domestically as well as industrial sites depending on any situation and the requirements.
One of the biggest manufacturers of home, commercial and industrial ventilation products is the PenBarry which also provides for softwares that come in handy to help in maintaining and running of ventilation products.
Another important use of exhaust fans include removing unwanted heat and humidity from and within an enclosed space. When purchasing and installing exhaust fans, one should highly consider environmental factors such as humidity and fume levels, the volume of the space as well as how one’s space is being used. The cubic feet per minute(CFM) requirements for the particular application should be a buyer’s consideration as well. Commercial exhaust fans are recommended as they have higher CFM ratings than residential exhaust fans.
The main difference between a fan and a blower therefore is that a fan moves huge amounts of gas with a low increase in pressure while a blower is a machine that moves gas with a moderate increase in pressure. Electric motors, hydraulic motors, internal combustion engines and handcranks among many other methods, are some of the commonly used ones in powering of fans. When the surrounding air is near body temperatures and contains high humidity levels, cooling of the body by the fans become ineffective thus it is not advised to use fans for cooling during periods of very high heat and humidity. Fans do not actually cool people. It rather works to evaporate cooling of sweat and increase heat convection into the surrounding air due to the air flowing from the fans.