SAI Life Sciences Interview Questions, Process, and Tips

The gauge of ducting refers to its thickness and is determined based on the size and application of the duct.

• The gauge of ducting ranges from 10 to 30, with lower numbers indicating thicker ducts.

• The size of the duct determines the gauge to be used. Larger ducts generally require thicker gauges for structural integrity.

• For example, a small residential HVAC system may use 24-gauge ducts, while a large commercial system ...read more

The question is asking about the guidelines for Revit and nut and bolt sizes in angle frame for HVAC engineering.

• Revit is a software used for building information modeling (BIM) in HVAC engineering.

• Guidelines for Revit include standards for modeling, annotation, and documentation.

• Nut and bolt sizes in angle frame refer to the specific dimensions and types of fasteners used in constructing angle frames for HVAC systems.

• ...read more

Infiltration and exfiltration are terms used in HVAC engineering to describe the movement of air into and out of a building.

• Infiltration refers to the unintentional or uncontrolled flow of outdoor air into a building through cracks, gaps, or openings in the building envelope.

• Exfiltration, on the other hand, is the opposite of infiltration and refers to the unintentional or uncontrolled flow of indoor air out of a build...read more

Different types of filters can be used in AHUs and plenums depending on the specific requirements.

• Fiberglass filters are commonly used in residential and commercial buildings.

• Pleated filters have a larger surface area and can capture smaller particles.

• HEPA filters are highly efficient and can capture particles as small as 0.3 microns.

• Activated carbon filters can remove odors and chemicals from the air.

• Electrostatic fil...read more

H13 and H14 are high-efficiency particulate air (HEPA) filters used in HVAC systems.

• H13 filters can capture 99.95% of particles as small as 0.3 microns.

• H14 filters can capture 99.995% of particles as small as 0.3 microns.

• Both filters are commonly used in hospitals, cleanrooms, and other environments where air quality is critical.

• The efficiency of these filters can vary depending on factors such as airflow rate and part