HVAC and building services
Fan power from flow and pressure rise
Calculates auxiliary fan power from volumetric flow rate, pressure rise, and efficiency.
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Duct air velocity
Calculates duct air velocity from volumetric flow rate and cross-sectional area.
Simple absolute humidity
Calculates auxiliary absolute humidity from water vapor pressure and temperature without climate tables.
ACH from air flow
Calculates air changes per hour from air flow and room volume.
Simple compressor power
Calculates auxiliary compressor power from pressure increase, flow, and efficiency; it is not device selection.
Cooling energy from power and time
Calculates cooling energy from cooling power and time using the same relation as the thermal calculator.
Air heating power from flow and delta T
Estimates air heating power from volumetric flow rate and temperature difference.