# HVAC Calculator

The application allows performing various calculations for HVAC systems engineering.

The application is a complex, unique by its size and content, comprising 85 calculations, vital for any HVAC engineer.

Now all the most up-to-date calculations are readily available for you, perform calculations anywhere: at a construction site, in negotiating, in a transport, office, auditorium etc.

Pro version contains **85** types of calculations, whereas Lite has got **38**.

You can select **Imperial or Metric** units in the application.

**System requirements:**

- iOS 9 or later.
- Compatible with iPhone.
- Languages English, French, German, Portuguese, Russian, Spanish.

**License:**

- Paid - Pro version, contains full set of functions.
- Free - Lite version, contains limited set of functions.

- Use the application at any place.
- Carry out single and complex calculations thanks to vast range of calculations.
- Do the quick calculation selection by means of navigation at calculations sections.
- Use the memorizing tools for quick save and calculation results applying.
- Mark the calculations as Favorite.
- Use suitable system of units: imperial or metric.
- Use the math calculator for additional calculations.

Function | Lite | Pro |

Aerodynamics | ||

Mass air flow rate | ||

Volume air flow rate | ||

Selection of the duct diameter | ||

Selection of the duct dimensions | ||

Circular orifice diameter | ||

Circular orifice dimensions | ||

Air velocity in terms of area | ||

Air flow in terms of area | ||

Air velocity in terms of duct diameter | ||

Air velocity in terms of duct dimensions | ||

Air flow in terms of duct diameter | ||

Air flow in terms of duct dimensions | ||

Friction pressure drop in the circular duct | ||

Friction pressure drop in the rectangular duct | ||

Pressure drop in terms of local losses | ||

Hydraulics | ||

Fluid flow in terms of capacity. Water | ||

Fluid flow in terms of capacity. Glycol | ||

Capacity in terms of pipeline diameter. Glycol | ||

Capacity in terms of fluid flow. Water | ||

Capacity in terms of fluid flow. Glycol | ||

Selection of the pipeline diameter in terms of fluid flow | ||

Selection of the pipeline diameter in terms of capacity. Water | ||

Selection of the pipeline diameter in terms of capacity. Glycol | ||

Pipeline frictional pressure drop. Glycol | ||

Pressure drop in terms of local losses. Glycol | ||

Throttling orifice diameter. Water | ||

Valve Kv | ||

System volume change. Water | ||

System volume change. Glycol | ||

Pipeline thermal extension | ||

Fluid velocity | ||

Fluid flow in terms of pipeline diameter | ||

Capacity in terms of pipeline diameter. Water | ||

Pipeline frictional pressure drop. Water | ||

Pressure drop in terms of local losses. Water | ||

Valve pressure drop | ||

Heating | ||

Two materials guarding heat transmission resistance | ||

Internal face temperature of the guarding | ||

Single material guarding heat transmission resistance | ||

Ventilation | ||

Air cooling capacity by coil temperature | ||

Air cooling capacity by relative humidity | ||

Air cooling capacity by enthalpy | ||

Fan electric motor capacity | ||

Available pressure for natural ventilation | ||

Water flow for air steam humidification | ||

Capacity for air steam humidification | ||

Capacity for air heating | ||

Air flow in terms of heat emission | ||

Air flow in terms of humidity exudation | ||

Air properties | ||

Air mixture temperature | ||

Air mixture moisture content | ||

Air mixture enthalpy | ||

Air mixture relative humidity | ||

Air density | ||

Air specific heat | ||

Steam saturation pressure in terms of temperature | ||

Steam saturation pressure in terms of moisture content | ||

Barometric pressure | ||

Partial pressure | ||

Dewpoint temperature | ||

Wet bulb temperature by relative humidity | ||

Wet bulb temperature by enthalpy | ||

Moisture content in the air in terms of enthalpy | ||

Moisture content in the air in terms of relative humidity | ||

Air enthalpy in terms of moisture content | ||

Air enthalpy in terms of relative humidity | ||

Air relative humidity in terms of moisture content | ||

Air relative humidity in terms of enthalpy | ||

Fluid properties | ||

Freezing point. Glycol | ||

Density. Water | ||

Density. Glycol | ||

Specific heat. Water | ||

Specific heat. Glycol | ||

Kinematic viscosity. Water | ||

Kinematic viscosity. Glycol | ||

Condensation temperature. Refrigerant | ||

Boiling temperature. Refrigerant | ||

Condensation pressure. Refrigerant | ||

Boiling pressure. Refrigerant | ||

Engineering geometry | ||

Surface area of the circular section insulation | ||

Surface area of the rectangular section insulation | ||

Equivalent diameter | ||

Steel pipeline weight | ||

Surface area of the circular duct | ||

Surface area of the rectangular duct |