Air Sensible Cooling Load Calculator
Calculate air sensible cooling load with transparent engineering inputs and the displayed formula.
Open calculator →WAVE 1 · ENGINEERING HUBDownload spreadsheet-compatible calculation register →Source being confirmed Source being confirmed Source being confirmed Source being confirmed Source being confirmed Source being confirmed Source being confirmed Source being confirmed Source being confirmed Source being confirmed Confirmed source Confirmed source Source being confirmed Source being confirmed Source being confirmed
HVAC and Refrigeration
Screen sensible loads, hydronic flow, air changes, duct velocity, fan power, envelope heat transfer and basic psychrometric relationships.
Tool index
Only resources currently allowed by the Part 1 verification gate, Part 2 source policy and rollout flags appear here.
Airflow from Sensible Load Calculator
Calculate airflow from sensible load with transparent engineering inputs and the displayed formula.
Open calculator →Air Temperature Rise Calculator
Calculate air temperature rise with transparent engineering inputs and the displayed formula.
Open calculator →HVAC Air Mass Flow Calculator
Calculate hvac air mass flow with transparent engineering inputs and the displayed formula.
Open calculator →Air Specific Heat from Load Calculator
Calculate air specific heat from load with transparent engineering inputs and the displayed formula.
Open calculator →Hydronic Heating Load Calculator
Calculate hydronic heating load with transparent engineering inputs and the displayed formula.
Open calculator →Hydronic Water Flow Calculator
Calculate hydronic water flow with transparent engineering inputs and the displayed formula.
Open calculator →Hydronic Delta-T Calculator
Calculate hydronic delta-t with transparent engineering inputs and the displayed formula.
Open calculator →Water Volume Flow from Heat Load Calculator
Calculate water volume flow from heat load with transparent engineering inputs and the displayed formula.
Open calculator →Cooling Tonnage from kW Calculator
Calculate cooling tonnage from kw with transparent engineering inputs and the displayed formula.
Open calculator →Air Changes per Hour Calculator
Calculate air changes per hour with transparent engineering inputs and the displayed formula.
Open calculator →Airflow from ACH Calculator
Calculate airflow from ach with transparent engineering inputs and the displayed formula.
Open calculator →Round Duct Diameter Calculator
Calculate round duct diameter with transparent engineering inputs and the displayed formula.
Open calculator →Duct Velocity Calculator
Calculate duct velocity with transparent engineering inputs and the displayed formula.
Open calculator →Rectangular Duct Area Calculator
Calculate rectangular duct area with transparent engineering inputs and the displayed formula.
Open calculator →Fan Air Power Calculator
Calculate fan air power with transparent engineering inputs and the displayed formula.
Open calculator →Fan Shaft Power Calculator
Calculate fan shaft power with transparent engineering inputs and the displayed formula.
Open calculator →Building Transmission Heat Loss Calculator
Calculate building transmission heat loss with transparent engineering inputs and the displayed formula.
Open calculator →U-Value from R-Value Calculator
Calculate u-value from r-value with transparent engineering inputs and the displayed formula.
Open calculator →R-Value from U-Value Calculator
Calculate r-value from u-value with transparent engineering inputs and the displayed formula.
Open calculator →Dew Point Calculator
Calculate dew point with transparent engineering inputs and the displayed formula.
Open calculator →Humidity Ratio Calculator
Calculate humidity ratio with transparent engineering inputs and the displayed formula.
Open calculator →Moist Air Enthalpy Calculator
Calculate moist air enthalpy with transparent engineering inputs and the displayed formula.
Open calculator →Sensible Heat Ratio Calculator
Calculate sensible heat ratio with transparent engineering inputs and the displayed formula.
Open calculator →Ventilation Heating Load Calculator
Calculate ventilation heating load with transparent engineering inputs and the displayed formula.
Open calculator →Learning path
- Start with the load or airflow quantity you can support with project data.
- Keep air/fluid properties and temperature bases explicit.
- Use psychrometric relationships only for the stated pressure and condition assumptions.
- Separate fan/pump air or hydraulic power from shaft/electrical input efficiency.
- Use manufacturer data and the applicable HVAC method for equipment selection and compliance.
Glossary
- Sensible load
- Heat load that changes dry-bulb temperature without directly representing latent moisture change.
- Latent load
- Heat load associated with moisture phase change or humidity change.
- Humidity ratio
- Mass of water vapor per unit mass of dry air.
- Dew point
- The temperature at which the stated moist-air condition reaches saturation during cooling at the specified pressure basis.
- Air changes per hour
- Airflow normalized by room volume and expressed as equivalent room-volume changes per hour.
- U-value
- Thermal transmittance used to relate heat flow to area and temperature difference.
- COP
- Coefficient of performance, a ratio of useful heating or cooling effect to required input.
- Fan air power
- Ideal air power obtained from volumetric airflow multiplied by fan pressure rise.
Worked examples
Examples are calculated from PROFENG's own tool defaults. Confirmed-source examples may be indexable; examples whose exact formula source remains pending stay noindex.
Air Sensible Cooling Load Calculator worked example
(1.2)*(1.005)*(2)*(10) = 24.12 kW
Open worked example →Airflow from Sensible Load Calculator worked example
(24)/((1.2)*(1.005)*(10)) = 1.99 m³/s
Open worked example →Air Temperature Rise Calculator worked example
(24)/((1.2)*(1.005)*(2)) = 9.95 K
Open worked example →HVAC Air Mass Flow Calculator worked example
(1.2)*(2) = 2.4 kg/s
Open worked example →Air Specific Heat from Load Calculator worked example
(24)/((1.2)*(2)*(10)) = 1 kJ/(kg·K)
Open worked example →Hydronic Heating Load Calculator worked example
(2)*(4.186)*(10) = 83.72 kW
Open worked example →Hydronic Water Flow Calculator worked example
(83.72)/((4.186)*(10)) = 2 kg/s
Open worked example →Hydronic Delta-T Calculator worked example
(83.72)/((2)*(4.186)) = 10 K
Open worked example →Water Volume Flow from Heat Load Calculator worked example
(83.72)/((998)*(4.186)*(10))*3600 = 7.214 m³/h
Open worked example →Cooling Tonnage from kW Calculator worked example
(35.1685)/3.51685284 = 10 tons refrigeration
Open worked example →Air Changes per Hour Calculator worked example
(0.5)*3600/(300) = 6 ACH
Open worked example →Airflow from ACH Calculator worked example
(6)*(300)/3600 = 0.5 m³/s
Open worked example →Round Duct Diameter Calculator worked example
Math.sqrt(4*(1)/(Math.PI*(5)))*1000 = 504.627 mm
Open worked example →Duct Velocity Calculator worked example
(1)/((0.5)*(0.4)) = 5 m/s
Open worked example →Rectangular Duct Area Calculator worked example
(1)/(5) = 0.2 m²
Open worked example →