Air Design HVAC Interview Questions, Process, and Tips

HVAC stands for Heating, Ventilation, and Air Conditioning. It refers to the technology used for indoor environmental comfort.

• HVAC is a system that controls the temperature, humidity, and air quality in buildings.

• It includes components such as furnaces, air conditioners, ventilation systems, and thermostats.

• Heating is provided by systems like boilers or electric heaters.

• Ventilation ensures fresh air circulation and rem...read more

To calculate duct manually with help of Ishare, follow these steps:

• Determine the airflow rate required for the space

• Calculate the friction loss in the duct using the Darcy-Weisbach equation

• Select the appropriate duct size based on the airflow rate and friction loss

• Use Ishare to calculate the pressure drop across the duct

• Adjust the duct size and/or airflow rate as necessary to meet design requirements

Duct sizing with Ductul involves calculating the required airflow and selecting the appropriate duct size.

• Calculate the required airflow based on the room size and usage

• Determine the friction loss in the duct system

• Select the appropriate duct size based on the calculated airflow and friction loss

• Consider the material and shape of the duct for optimal performance

• Use Ductul software for accurate calculations and sizing

Heat load calculation can be done using Excel sheet E-20

• Open Excel sheet E-20

• Enter the relevant data such as room dimensions, insulation, and equipment

• Use formulas to calculate the heat load

• Consider factors such as solar gain and occupancy

• Review and adjust calculations as necessary

AutoCAD commands are used to create, edit and manipulate 2D and 3D designs.

• LINE - draw a straight line

• CIRCLE - draw a circle

• RECTANGLE - draw a rectangle

• TRIM - trim objects to a specified boundary

• EXTEND - extend objects to a specified boundary

• MOVE - move objects to a new location

• COPY - create a copy of an object

• ARRAY - create a pattern of objects

• MIRROR - create a mirrored copy of an object

• SCALE - resize objects proporti...read more