Professional Air Balance
To provide a professional air balance it is necessary that one understands the operation of the many varied air systems that provide heating, ventilating and air conditioning for today's buildings. To provide an air balance for a building one must adjust supply and return fan air volumes to meet specified operating parameters. The air balance technician must set the mixed air section of the various air systems to specified operating parameters. The air balance technician must adjust terminal devices such as variable air boxes, bypass boxes, dual duct mixing boxes and constant volume boxes to the correct sequencing and air flow. Last but not least the air balance technician must adjust individual supply air diffusers, return and exhaust air grilles to the correct design flow rate. At the completion of an air balance the technician must compile and table reports detailing all work done. To be able to provide a professional air balance an understanding of these principles must be mastered. Air balance terms.Air balance definitions.An understanding of heating.An understanding of cooling.Absolute humidity and relative humidity.Methods of heat transfer.Air distribution methods.Types of fans.Fan air volume control.Fan and motor design information.Air flow devices.Air balance instruments.Constant volume air balance.Dual duct air balance.Multizone air balance.Induction air balanceVariable air balance.Exhaust fan balance.Air balance termsAir balance definitions An understanding of heatingAn understanding of coolingAbsolute and relative humidityMethods of heat transferAir distribution methodsTypes of fansFan air volume controlFan and motor design informationAir flow devicesAir balance instrumentsAir balance a constant volume systemAir balance a dual duct systemAir balance a multizone systemAir balance an induction systemAir balance a VAV systemAir balance an exhaust fanPerfect-home-hvac-design.com can provide per-room cfm calculations as part of their Design Services.
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