💨 IIAR 2 Section 6.14 (Emergency Ventilation CFM = 100 x Sqrt(System Charge Lbs))

Ammonia Machinery Room Ventilation Calculator

Size continuous and emergency mechanical exhaust ventilation systems for ammonia refrigeration machinery rooms under IIAR 2 Section 6.14 & ASHRAE 15: calculate continuous normal ventilation (0.5 CFM/sq ft) and emergency high-speed exhaust airflow (CFM = 100 x Sqrt(Total Charge Lbs)), spark-proof AMCA Type B fans, intake louvers, and ventilation profits.

1. Project & Operating Inputs

Ammonia System Maximum Charge (Pounds - Lbs e.g. 18,000 Lb NH3 Charge)

Machinery Room Floor Area (Square Feet e.g. 4,500 Sq Ft Engine Room)

Customer Bid Price for Supplied & Wired Emergency Fan Skid ($)

AMCA Spark-Resistant Fans, Class I Div 2 Motors, Auto Dampers & Techs ($)

2. Financial Breakdown & Yield

IIAR 2 EMERGENCY VENTILATION

Turnkey Machinery Room Vent Package Profit

Industrial HVAC Safety Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost