What is return air in HVAC system?
What is return air in HVAC system?
What is a Return Air Vent? An air conditioner works by absorbing the warm air and moisture from your home. Once the dampness is separated from the air, your AC unit cools the warm air, and sends it back into your home through the return air vents.
How do you increase return air flow?
5 Ways to Improve Airflow in Your Home
- Check Vents and Registers. One of the simplest things you can do to increase airflow in your home is to check the vents and registers in each room.
- Turn on Ceiling Fans.
- Schedule HVAC Maintenance.
- Consider Duct Cleaning.
- Invest in a Ventilator.
How do you calculate return air flow?
An anemometer, a test instrument that measures air velocity is used to determine the average air speed in the duct. Then the average feet per minute is multiplied by the area of the duct in square feet to determine the airflow moving through the duct. Traverse the airflow in the exhaust duct.
Why is return air important in a HVAC system?
Inadequate return air seriously limits both air flow rates and also the degree to which building air is cooled (or heated) by the HVAC system.
How to calculate required return grille airflow?
First, calculate the percent of outside air compared to system airflow by dividing the outside air CFM by the total supply airflow. Example: 200 CFM outside air divided by 2000 CFM of supply air equals 10% outside air.
What do you need to know about return air vents?
A return air vent is the part of your HVAC system that allows that warm air to flow back to your air conditioner. Not only will that air be cooled again, but it will also be cleaned by your air filter or air cleaner.
What causes unsatisfactory airflow in an HVAC system?
are perhaps the most common cause of unsatisfactory airflow in an HVAC system. Air leaks from unconditioned space into the air supply system mean that cool air is diluted in summer or warm air is diluted in winter.