HVAC-calculator 2.2

HVAC Calculator is a comprehensive application designed to assist professionals and enthusiasts in performing a wide range of calculations related to HVAC systems and building energy efficiency. While the app offers convenient access to multiple formulas, it primarily serves as a practical tool for quick reference rather than a source of detailed technical explanation.

The app addresses common calculation needs encountered during on-site work or meetings, where recalling specific formulas can be challenging. By providing straightforward calculation capabilities on an iPhone or iPad, it simplifies tasks that might otherwise require complex manual computations or specialized software.

It is a universal application, allowing users to purchase it once and utilize it seamlessly across both iPhone and iPad platforms.

The features include calculations such as:

• Sound Power Level (SFP) from measured or designed fan power and airflow
• SFP adjustments at reduced airflow for VAV ventilation systems
• SFP at design conditions or maximum performance scenarios for VAV systems
• Temperature efficiency of heat recovery units
• Exit air temperature from heat recovery units in air handling systems
• Exhaust air temperature post-heat recovery
• Actual temperature efficiency considering minimum exhaust temperatures for specific applications like frost-free garage ventilation
• Air velocity in ducts with given dimensions and airflow rates
• Maximum achievable airflow based on duct size and velocity constraints
• Dimensions of rectangular and circular spiral ducts for specified airflow and velocity requirements
• Pressure drops in Pa/m for different duct geometries
• Equivalent diameters for rectangular ducts
• Hydraulic diameters for rectangular ducts