In this case a 5-ton HVAC system at a nominal 2000 Cfm is split into 2 zones. For the sake of simplicity, the zones are assumed to be equal in load at 1000 Cfm each. ACCA Manual Zr defines this ratio of bypass Cfm versus system Cfm as the â Bypass Factor â (BPF) = 1000 / 2000 = .50 or 50%.n this case a 5-ton HVAC system at a nominal 2000 Cfm is split into 2 zones. For the sake of simplicity, the zones are assumed to be equal in load at 1000 Cfm each. ACCA Manual Zr defines this ratio of bypass Cfm versus system Cfm as the â Bypass Factor â (BPF) = 1000 / 2000 = .50 or 50%.
A poncho (Spanish pronunciation:; punchu in Quechua; Mapudungun pontro, blanket, woolen fabric) is an outer garment designed to keep the body warm. A rain poncho is made from a watertight material designed to keep the body dry from the rain. Ponchos have been used by the Native American peoples of the Andes since pre-Hispanic time, from places now under the territory of Bolivia, Peru, and are now considered typical South American garments.
Bronchi are plural for bronchus and represent the passageways leading into the lungs. A bronchus, which is also known as a main or primary bronchus, represents the airway in the respiratory tract that conducts air into the lungs.Bronchi will branch into smaller tubes that become bronchioles.he segmental bronchi divide into many smaller bronchioles that divide into terminal bronchioles, and then into respiratory bronchioles, which divide into 2 to 11 alveolar ducts. Each alveolar duct has 5 or 6 associated alveolar sacs.