NAFA CAFS /Exam Questions and answers, rated A+/ 2024-25 Exam board exam predictions. APPROVED/

NAFA CAFS /Exam Questions and answers, rated A+ What are the 3 types of media used in contaminate control - -Active carbon, chemically treated carbon, potassium permanganate What is residence time? - -the time it takes air to cross a distance equal to the thickness of the filter without accounting for the resistance of the media through which it travels What are the variations of the contamination control principle - -clean the air required by the process, blanket the product with cleaned air, offer enough air flow to move contaminated air away from the product What is removal efficiency - -The fraction of the contaminate that once in contact with the media is removed by either physical or chemical means What is Capacity - -The amount the media is capable of removing - this determines the life of the filter What are two types of filter options - -partial bypass, total retention What is the ASHRAE standard 62.1/62.2 - -Ventilation for acceptable indoor air quality to specific minimum ventilation rates IAQ which will be acceptable to humans and are intended to avoid adverse health effects How many classifications of air is there? - -4 What are the IAQ testing applications - -Particulate contaminants, Gas phase, systems integrity, comfort parameters What are the control strategies - -Filtration, source