💨 NFPA 86 Safety (Solvent Vapor 25% LEL Dilution CFM, Continuous Exhaust Safety)

IR Oven Exhaust Ventilation & LEL Dilution Calculator

Size dedicated exhaust ventilation blowers for industrial electric infrared paint drying and curing ovens handling flammable volatile organic compounds (VOC) under NFPA 86 (Class A Ovens): calculate minimum dilution airflow (CFM) maintaining solvent vapor concentration strictly below 25% of the Lower Explosive Limit (LEL), and safety yields.

1. Project & Operating Inputs

Solvent Evaporation Rate (GPH e.g. 4.5 GPH Xylene/MEK Solvent Blend)

Oven Operating Temperature (°F e.g. 350.0°F Curing Zone)

Customer Bid Price for Supplied & Landed Exhaust Blower Skid ($)

High-Temp Centrifugal Exhaust Fan, Airflow Safety Switch, Ductwork ($)

2. Financial Breakdown & Yield

NFPA 86 OVEN EXHAUST

Turnkey Oven Ventilation Package Profit

Industrial Oven Safety Contracting Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost