What is an economizer? How does an economizer work? - Air Economizers

Arman explains HVAC economizer (air economizer) and shows different economizer control methods.

Links to ASHRAE 90.1 and International Energy Conservation Code:
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- https://www.ashrae.org/technical-resources/bookstore/standard-90-1
- https://codes.iccsafe.org/content/IECC2021P1
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Arman, the video creator, is a Licensed Mechanical Engineer (HVAC, Plumbing, and Fire Protection Engineer). He holds Professional Engineering (PE) license in multiple states in the USA, and is a long time ASHRAE and ASME member. Arman also serves in multiple technical committees (TC) of ASHRAE.

00:00 - Intro
00:16 - Economizer basics
01:06 - Room pressurization by economizer
01:16 - Economizer with barometric damper
01:40 - Economizer with dedicated exhaust fan
01:58 - Economizer with return fan
02:30 - Economizer control
02:56 - Fixed dry bulb control method
03:34 - Differential dry bulb control method
05:05 - Fixed enthalpy with fixed dry bulb control method
06:06 - Differential enthalpy with fixed dry bulb control method

Photos of Daikin products are used with Daikin permission