Critical Engineering Tools & Simulators.
Stop guessing on your facility’s compliance. Our proprietary calculators are built on strict ASHRAE standards and GMP thermodynamic principles. Select a tool below to accurately calculate cleanroom exfiltration rates, map your pressure cascades, or generate a complete CAPEX and OPEX equipment baseline for your next critical facility upgrade.
Airlock Leakage Flow Calculator
Calculate exfiltration airflow through door clearances using the ASHRAE sharp-edge orifice derivation.
+15 Pa
0 Pa
Volumetric Flow Rate (Q)
Q = 840 · A · √ΔP and incorrectly label the output as CFM. Mathematically, using metric inputs yields L/s. CED strictly converts to exact CFM to prevent design deficits.
Airlock Leakage Flow Calculator (ASHRAE Standard)
Cleanroom Air Balance & Pressurization Simulator
Accurately calculating air leakage through door clearances is the absolute foundation of cleanroom pressurization and GMP compliance.
In high-stakes pharmaceutical and heavy industrial facilities, maintaining strict environmental control requires precise air balancing. The required pressure differential is achieved by meticulously calculating the difference between the Supply Air entering the room and the Return Air leaving it, ensuring the exact necessary volume of air is forced through structural gaps to prevent contamination.
How to Use This Tool: Enter your target values and specifications to simulate the system dynamics. This tool instantly calculates the resulting leakage exfiltration rate and visualizes the room's pressure condition, ensuring your HVAC system is perfectly sized to maintain complete containment and pass inspection the first time.
Need expert oversight on your next critical facility upgrade? contact us
Deep Dive: Want to understand the engineering logic behind these pressure targets? Read our Technical Guide to Bubble, Sink, and Cascade Airlock Design
*ASHRAE Design Guide for Cleanrooms: Fundamentals, Systems, Performance
Dynamic Cleanroom Pressure Simulator
Adjust the Supply and Return air to observe the impact on room pressurization and exfiltration rates.
Corridor
Process Cleanroom
Airlock
Central Plant CAPEX & OPEX Simulator
CED CRITICAL ENGINEERING DESIGN
Pharma HVAC CAPEX & OPEX Preliminary Assessment
Pharma HVAC CAPEX & OPEX Estimator
Calculate critical airflow, primary equipment sizing, and power consumption based on GMP/ISO area classifications.
Facility Dimensions
CAPEX: Dedicated AHU Breakdown
CAPEX: Central Plant Load
OPEX: Estimated Electrical Load
⚠️ Disclaimer: This is an executive approximation for initial CAPEX/OPEX modeling. Final engineering values must be strictly calculated based on specific outdoor/indoor temperatures, Relative Humidity (RH) targets, internal equipment loads, building envelope, and dedicated dehumidifier requirements.
Bulletproof facility management starts before the concrete is poured. Undersized air handling units lead to contamination, while oversized chillers drain operational budgets. This calculator uses high-recirculation pharmaceutical physics to estimate the exact dedicated AHU counts, primary chilled water plant sizing, and total electrical loads required to maintain strict GMP/ISO compliance.