MEA Engineering Calculations
Internal Engineering Calculations Platform
Ventilation Systems
HVAC design tools for air conditioning, ventilation and ductwork systems
AHU Psychrometric Calculation
Full summer and winter psychrometric design — cooling coil, heating coil, heat recovery, mixing and supply conditions.
Open CalculationRoom Airflows Calculation
Calculate supply and extract airflow rates for rooms based on occupancy, heat gains and ventilation standards.
Pressurisation Calculation
Stairwell and lobby pressurisation system design to EN 12101-6, including leakage area and fan sizing.
Heater Battery Calculation
Size electric and LPHW duct heater batteries for supply air temperature rise, flow rate and kW duty.
Fan Sizing Calculation
Select and size supply and extract fans based on system resistance, flow rate and duty/standby arrangements.
Duct Sizing Calculation
Size circular and rectangular ductwork by equal pressure drop or velocity method to CIBSE Guide C.